Commit graph

6755 commits

Author SHA1 Message Date
Danny Wood
e3c6e1aaa5 V4L/DVB (13168): Add support for Asus Europa Hybrid DVB-T card (SAA7134 SubVendor ID: 0x1043 Device ID: 0x4847)
Adds the device IDs and driver linking to allow the Asus Europa DVB-T
card to operate with these drivers.
The device has a SAA7134 chipset with a TD1316 Hybrid Tuner.
All inputs work on the card including switching between DVB-T and
Analogue TV, there is also no IR with this card.

[mchehab@redhat.com: CodingStyle fixes]

Signed-off-by: Danny Wood <danwood76@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05 18:40:41 -02:00
Mauro Carvalho Chehab
131db3a1ac V4L/DVB (13164): DocBook/dvb: Starts documenting DVBS2API ioctls
DVBS2API introduced two new ioctls that allows changing/getting details about newer
video standards like DVB-S2 and ISDB-T. There are lots of thing to do in this chapter,
but, for now, just add a session there, in order to allow make to not complain about
undefined symbol.

With this patch, all ioctls at the frontend.h API were somehow documented.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05 18:40:40 -02:00
Mauro Carvalho Chehab
b832104c7a V4L/DVB (13163): Docbook/dvb: Rename isdbt.xml to dvbproperty.xml
We'll need to add the documentation for FE_[GET|SET]_PROPERTY that
is not specific to isdb-t. Instead of doing it at frontend.xml,
it is better to have a separate session for it. Also, isdbt.xml assumes
that those ioctls were already introduced, and documents several exisiting
properties. So, better to just rename it and add the documentation for it,
together with each existing property there.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05 18:40:39 -02:00
Mauro Carvalho Chehab
603c0d80b4 V4L/DVB (13162): Docbook/dvb: add missing specs for FE_DISHNETWORK_SEND_LEGACY_CMD ioctl
While this ioctl should not be used, and is a good canditate for
Documentation/feature-removal-schedule.txt, while it is on kernel,
it needs to be documented.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05 18:40:39 -02:00
Mauro Carvalho Chehab
f0964a770a V4L/DVB (13161): Add missing specs for FE_SET_FRONTEND_TUNE_MODE ioctl.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05 18:40:38 -02:00
Mauro Carvalho Chehab
9ca2bdaa76 V4L/DVB (13160): DocBook/Makefile: add linux/dvb/frontend.h header file
Adds linux/dvb/frontend.h header file at DocBook, and creates cross-references
for the frontend ioctls.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05 18:40:38 -02:00
Mauro Carvalho Chehab
6dea3830d8 V4L/DVB (13159): DocBook/frontend: use cross references for ioctls
Rename all sessions id's for frontend ioctls to match ioctl name and
add the proper cross-link references for those ioctls.

This also helps to identify what ioctls are missing specs.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05 18:40:38 -02:00
Rafal Milecki
518c8df77c V4L/DVB (13116): gspca - ov519: Webcam 041e:4067 added.
Signed-off-by: Rafal Milecki <zajec5@gmail.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05 18:40:25 -02:00
Devin Heitmueller
f91cb65b94 V4L/DVB (13077): em28xx: Add support for new variant of KWorld 2800d
Seems that the reference design used for the KWorld 2800d switched from the
em2860 to em2862, so we need to add the new USB id (and the i2c hash remains
so all we need is the default em2862 id.

Thanks to Ian Young for reporting the issue and testing the fix.

Cc: Ian Young <ian@duffrecords.com>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-05 18:40:14 -02:00
Linus Torvalds
96fa2b508d Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (40 commits)
  tracing: Separate raw syscall from syscall tracer
  ring-buffer-benchmark: Add parameters to set produce/consumer priorities
  tracing, function tracer: Clean up strstrip() usage
  ring-buffer benchmark: Run producer/consumer threads at nice +19
  tracing: Remove the stale include/trace/power.h
  tracing: Only print objcopy version warning once from recordmcount
  tracing: Prevent build warning: 'ftrace_graph_buf' defined but not used
  ring-buffer: Move access to commit_page up into function used
  tracing: do not disable interrupts for trace_clock_local
  ring-buffer: Add multiple iterations between benchmark timestamps
  kprobes: Sanitize struct kretprobe_instance allocations
  tracing: Fix to use __always_unused attribute
  compiler: Introduce __always_unused
  tracing: Exit with error if a weak function is used in recordmcount.pl
  tracing: Move conditional into update_funcs() in recordmcount.pl
  tracing: Add regex for weak functions in recordmcount.pl
  tracing: Move mcount section search to front of loop in recordmcount.pl
  tracing: Fix objcopy revision check in recordmcount.pl
  tracing: Check absolute path of input file in recordmcount.pl
  tracing: Correct the check for number of arguments in recordmcount.pl
  ...
2009-12-05 09:53:36 -08:00
Linus Torvalds
69f061e0c2 Merge branch 'core-signal-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-signal-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  signal: Print warning message when dropping signals
  signal: Fix alternate signal stack check
2009-12-05 09:52:33 -08:00
Linus Torvalds
607781762e Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)
  rcu: Make RCU's CPU-stall detector be default
  rcu: Add expedited grace-period support for preemptible RCU
  rcu: Enable fourth level of TREE_RCU hierarchy
  rcu: Rename "quiet" functions
  rcu: Re-arrange code to reduce #ifdef pain
  rcu: Eliminate unneeded function wrapping
  rcu: Fix grace-period-stall bug on large systems with CPU hotplug
  rcu: Eliminate __rcu_pending() false positives
  rcu: Further cleanups of use of lastcomp
  rcu: Simplify association of forced quiescent states with grace periods
  rcu: Accelerate callback processing on CPUs not detecting GP end
  rcu: Mark init-time-only rcu_bootup_announce() as __init
  rcu: Simplify association of quiescent states with grace periods
  rcu: Rename dynticks_completed to completed_fqs
  rcu: Enable synchronize_sched_expedited() fastpath
  rcu: Remove inline from forward-referenced functions
  rcu: Fix note_new_gpnum() uses of ->gpnum
  rcu: Fix synchronization for rcu_process_gp_end() uses of ->completed counter
  rcu: Prepare for synchronization fixes: clean up for non-NO_HZ handling of ->completed counter
  rcu: Cleanup: balance rcu_irq_enter()/rcu_irq_exit() calls
  ...
2009-12-05 09:52:14 -08:00
Linus Torvalds
83fdbfbfe6 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (30 commits)
  TOMOYO: Add recursive directory matching operator support.
  remove CONFIG_SECURITY_FILE_CAPABILITIES compile option
  SELinux: print denials for buggy kernel with unknown perms
  Silence the existing API for capability version compatibility check.
  LSM: Move security_path_chmod()/security_path_chown() to after mutex_lock().
  SELinux: header generation may hit infinite loop
  selinux: Fix warnings
  security: report the module name to security_module_request
  Config option to set a default LSM
  sysctl: require CAP_SYS_RAWIO to set mmap_min_addr
  tpm: autoload tpm_tis based on system PnP IDs
  tpm_tis: TPM_STS_DATA_EXPECT workaround
  define convenient securebits masks for prctl users (v2)
  tpm: fix header for modular build
  tomoyo: improve hash bucket dispersion
  tpm add default function definitions
  LSM: imbed ima calls in the security hooks
  SELinux: add .gitignore files for dynamic classes
  security: remove root_plug
  SELinux: fix locking issue introduced with c6d3aaa4e3
  ...
2009-12-05 09:44:57 -08:00
Linus Torvalds
d9b2c4d0b0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: (50 commits)
  pcmcia: rework the irq_req_t typedef
  pcmcia: remove deprecated handle_to_dev() macro
  pcmcia: pcmcia_request_window() doesn't need a pointer to a pointer
  pcmcia: remove unused "window_t" typedef
  pcmcia: move some window-related code to pcmcia_ioctl.c
  pcmcia: Change window_handle_t logic to unsigned long
  pcmcia: Pass struct pcmcia_socket to pcmcia_get_mem_page()
  pcmcia: Pass struct pcmcia_device to pcmcia_map_mem_page()
  pcmcia: Pass struct pcmcia_device to pcmcia_release_window()
  drivers/pcmcia: remove unnecessary kzalloc
  pcmcia: correct handling for Zoomed Video registers in topic.h
  pcmcia: fix printk formats
  pcmcia: autoload module pcmcia
  pcmcia/staging: update comedi drivers
  PCMCIA: stop duplicating pci_irq in soc_pcmcia_socket
  PCMCIA: ss: allow PCI IRQs > 255
  PCMCIA: soc_common: remove 'dev' member from soc_pcmcia_socket
  PCMCIA: soc_common: constify soc_pcmcia_socket ops member
  PCMCIA: sa1111: remove duplicated initializers
  PCMCIA: sa1111: wrap soc_pcmcia_socket to contain sa1111 specific data
  ...
2009-12-05 09:42:59 -08:00
Russell King
0719dc3413 Merge branch 'devel-stable' into devel 2009-12-05 10:35:33 +00:00
Andrew Vasquez
3420d36cac [SCSI] qla2xxx: Add firmware-dump kobject uevent notification.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04 12:00:10 -06:00
Russell King
602fd7c367 Merge branch 'for-rmk' of git://git.fluff.org/bjdooks/linux into devel-stable
Conflicts:
	arch/arm/Kconfig
2009-12-04 17:33:54 +00:00
Takashi Iwai
86e1d57e4f Merge branch 'topic/hda' into for-linus 2009-12-04 16:22:45 +01:00
Justin P. Mattock
e02f0e868a doc: Fix a typo in slub.txt.
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-12-04 15:39:59 +01:00
Dr. David Alan Gilbert
1b35edaf9f doc: fix regulator docs cut-and-pasteism
Minor copy-and-pasteism in the regulator docs (against
git from today):

Signed-off-by: Dave Gilbert <linux@treblig.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-12-04 15:39:58 +01:00
Krzysztof Halasa
bebd04cc45 doc: Fix IRQ chip docs
This patch updates the IRQ docs to match reality.

Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-12-04 15:39:57 +01:00
André Goddard Rosa
af901ca181 tree-wide: fix assorted typos all over the place
That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-12-04 15:39:55 +01:00
Davidlohr Bueso
e281d75e21 fix typos/grammos in Documentation/edac.txt
Trivial patch fixes some typos in the Documentation/edac.txt file.

Acked-by: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-12-04 15:39:53 +01:00
Patrick McHardy
8153a10c08 ipv4 05/05: add sysctl to accept packets with local source addresses
commit 8ec1e0ebe26087bfc5c0394ada5feb5758014fc8
Author: Patrick McHardy <kaber@trash.net>
Date:   Thu Dec 3 12:16:35 2009 +0100

    ipv4: add sysctl to accept packets with local source addresses

    Change fib_validate_source() to accept packets with a local source address when
    the "accept_local" sysctl is set for the incoming inet device. Combined with the
    previous patches, this allows to communicate between multiple local interfaces
    over the wire.

    Signed-off-by: Patrick McHardy <kaber@trash.net>

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03 12:14:38 -08:00
Vivek Goyal
72f924f62a blkio: Documentation
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-12-03 19:28:53 +01:00
Jens Axboe
220d0b1dbf Merge branch 'master' into for-2.6.33 2009-12-03 13:49:39 +01:00
Dmitry Torokhov
467832032c Merge commit 'v2.6.32' into next 2009-12-02 23:38:13 -08:00
Jan Kiszka
3cfc3092f4 KVM: x86: Add KVM_GET/SET_VCPU_EVENTS
This new IOCTL exports all yet user-invisible states related to
exceptions, interrupts, and NMIs. Together with appropriate user space
changes, this fixes sporadic problems of vmsave/restore, live migration
and system reset.

[avi: future-proof abi by adding a flags field]

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03 09:32:25 +02:00
Glauber Costa
afbcf7ab8d KVM: allow userspace to adjust kvmclock offset
When we migrate a kvm guest that uses pvclock between two hosts, we may
suffer a large skew. This is because there can be significant differences
between the monotonic clock of the hosts involved. When a new host with
a much larger monotonic time starts running the guest, the view of time
will be significantly impacted.

Situation is much worse when we do the opposite, and migrate to a host with
a smaller monotonic clock.

This proposed ioctl will allow userspace to inform us what is the monotonic
clock value in the source host, so we can keep the time skew short, and
more importantly, never goes backwards. Userspace may also need to trigger
the current data, since from the first migration onwards, it won't be
reflected by a simple call to clock_gettime() anymore.

[marcelo: future-proof abi with a flags field]
[jan: fix KVM_GET_CLOCK by clearing flags field instead of checking it]

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03 09:32:19 +02:00
Ed Swierk
ffde22ac53 KVM: Xen PV-on-HVM guest support
Support for Xen PV-on-HVM guests can be implemented almost entirely in
userspace, except for handling one annoying MSR that maps a Xen
hypercall blob into guest address space.

A generic mechanism to delegate MSR writes to userspace seems overkill
and risks encouraging similar MSR abuse in the future.  Thus this patch
adds special support for the Xen HVM MSR.

I implemented a new ioctl, KVM_XEN_HVM_CONFIG, that lets userspace tell
KVM which MSR the guest will write to, as well as the starting address
and size of the hypercall blobs (one each for 32-bit and 64-bit) that
userspace has loaded from files.  When the guest writes to the MSR, KVM
copies one page of the blob from userspace to the guest.

I've tested this patch with a hacked-up version of Gerd's userspace
code, booting a number of guests (CentOS 5.3 i386 and x86_64, and
FreeBSD 8.0-RC1 amd64) and exercising PV network and block devices.

[jan: fix i386 build warning]
[avi: future proof abi with a flags field]

Signed-off-by: Ed Swierk <eswierk@aristanetworks.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03 09:32:18 +02:00
James Morris
c84d6efd36 Merge branch 'master' into next 2009-12-03 12:03:40 +05:30
William Allen Simpson
519855c508 TCPCT part 1c: sysctl_tcp_cookie_size, socket option TCP_COOKIE_TRANSACTIONS
Define sysctl (tcp_cookie_size) to turn on and off the cookie option
default globally, instead of a compiled configuration option.

Define per socket option (TCP_COOKIE_TRANSACTIONS) for setting constant
data values, retrieving variable cookie values, and other facilities.

Move inline tcp_clear_options() unchanged from net/tcp.h to linux/tcp.h,
near its corresponding struct tcp_options_received (prior to changes).

This is a straightforward re-implementation of an earlier (year-old)
patch that no longer applies cleanly, with permission of the original
author (Adam Langley):

    http://thread.gmane.org/gmane.linux.network/102586

These functions will also be used in subsequent patches that implement
additional features.

Requires:
   net: TCP_MSS_DEFAULT, TCP_MSS_DESIRED

Signed-off-by: William.Allen.Simpson@gmail.com
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-02 22:07:24 -08:00
David S. Miller
e00484023e Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-12-02 22:00:34 -08:00
Shan Wei
1f5865e73f ip: update the description of rp_filter in ip-sysctl.txt
The commit 27fed4175a (ip: fix logic of
reverse path filter sysctl) has changed the logic of rp_filter.  The
document about rp_filter is out of date. Now, setting
conf/all/rp_filte with 0 can also enable source validation.

Update the document according to the commit.

Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-02 15:39:04 -08:00
David S. Miller
ff9c38bba3 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	net/mac80211/ht.c
2009-12-01 22:13:38 -08:00
David Howells
f13a48bd79 SLOW_WORK: Move slow_work's proc file to debugfs
Move slow_work's debugging proc file to debugfs.

Signed-off-by: David Howells <dhowells@redhat.com>
Requested-and-acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-01 08:20:31 -08:00
Takashi Iwai
b00615d163 Merge branch 'topic/pcm-dma-fix' into topic/core-change 2009-12-01 15:58:15 +01:00
Takashi Iwai
75639e7ee1 Merge branch 'topic/beep-rename' into topic/core-change 2009-12-01 15:58:10 +01:00
Ben Dooks
e02f866456 ARM: S3C: Update Simtec copyright statements from , to -
There are a number of statements of the form A, B or A, B, C where
the numbers A,B,C are consecutive. Tidy these up to be A-B or A-C
as appropriate and to comply better with copyright standards [1]

[1] http://www.copyrightservice.co.uk/copyright/p03_copyright_notices
    section 4iii 'Year of publication'

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Simtec Linux Team <linux@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-12-01 01:33:51 +00:00
Ben Dooks
50f430e3ad ARM: S3C: Fix Simtec copyright statements in Documentation/S3C24XX
The (c) alone is not a sufficient copyright statement, nor is it a
good replacement for the proper encircled &copy; symbol [1]. Add the
word copyright to the apropriate places and remove the (c) symbol.

[1] http://www.copyrightservice.co.uk/copyright/p03_copyright_notices
    section 4 'What does a notice consist of?'

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Simtec Linux Team <linux@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-12-01 01:33:50 +00:00
Geert Uytterhoeven
c69f677cc8 fbdev: Migrate mailing lists to vger
The fbdev mailing lists at SourceForge have been migrated to a single
mailing list at kernel.org: linux-fbdev@vger.kernel.org.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-30 13:46:04 -08:00
Linus Torvalds
6e80133f7f Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-fscache
* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-fscache: (31 commits)
  FS-Cache: Provide nop fscache_stat_d() if CONFIG_FSCACHE_STATS=n
  SLOW_WORK: Fix GFS2 to #include <linux/module.h> before using THIS_MODULE
  SLOW_WORK: Fix CIFS to pass THIS_MODULE to slow_work_register_user()
  CacheFiles: Don't log lookup/create failing with ENOBUFS
  CacheFiles: Catch an overly long wait for an old active object
  CacheFiles: Better showing of debugging information in active object problems
  CacheFiles: Mark parent directory locks as I_MUTEX_PARENT to keep lockdep happy
  CacheFiles: Handle truncate unlocking the page we're reading
  CacheFiles: Don't write a full page if there's only a partial page to cache
  FS-Cache: Actually requeue an object when requested
  FS-Cache: Start processing an object's operations on that object's death
  FS-Cache: Make sure FSCACHE_COOKIE_LOOKING_UP cleared on lookup failure
  FS-Cache: Add a retirement stat counter
  FS-Cache: Handle pages pending storage that get evicted under OOM conditions
  FS-Cache: Handle read request vs lookup, creation or other cache failure
  FS-Cache: Don't delete pending pages from the page-store tracking tree
  FS-Cache: Fix lock misorder in fscache_write_op()
  FS-Cache: The object-available state can't rely on the cookie to be available
  FS-Cache: Permit cache retrieval ops to be interrupted in the initial wait phase
  FS-Cache: Use radix tree preload correctly in tracking of pages to be stored
  ...
2009-11-30 13:33:48 -08:00
Masami Hiramatsu
d1eb650ff4 tracepoint: Move signal sending tracepoint to events/signal.h
Move signal sending event to events/signal.h. This patch also
renames sched_signal_send event to signal_generate.

Changes in v4:
 - Fix a typo of task_struct pointer.

Changes in v3:
 - Add docbook style comments

Changes in v2:
 - Add siginfo argument
 - Add siginfo storing macro

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Reviewed-by: Jason Baron <jbaron@redhat.com>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Oleg Nesterov <oleg@redhat.com>
LKML-Reference: <20091124215645.30449.60208.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-26 10:55:37 +01:00
Ingo Molnar
16bc67edeb Merge branch 'sched/urgent' into sched/core
Merge reason: Pick up fixes that did not make it into .32.0

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-26 10:50:42 +01:00
Mike Travis
f6630114d9 sched: Limit the number of scheduler debug messages
Remove the verbose scheduler debug messages unless kernel
parameter "sched_debug" set.  /proc/sched_debug unchanged.

Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Roland Dreier <rdreier@cisco.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091118002221.489305000@alcatraz.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-26 10:17:30 +01:00
Thomas Renninger
e2f74f355e [ACPI/CPUFREQ] Introduce bios_limit per cpu cpufreq sysfs interface
This interface is mainly intended (and implemented) for ACPI _PPC BIOS
frequency limitations, but other cpufreq drivers can also use it for
similar use-cases.

Why is this needed:

Currently it's not obvious why cpufreq got limited.
People see cpufreq/scaling_max_freq reduced, but this could have
happened by:
  - any userspace prog writing to scaling_max_freq
  - thermal limitations
  - hardware (_PPC in ACPI case) limitiations

Therefore export bios_limit (in kHz) to:
  - Point the user that it's the BIOS (broken or intended) which limits
    frequency
  - Export it as a sysfs interface for userspace progs.
    While this was a rarely used feature on laptops, there will appear
    more and more server implemenations providing "Green IT" features like
    allowing the service processor to limit the frequency. People want
    to know about HW/BIOS frequency limitations.

All ACPI P-state driven cpufreq drivers are covered with this patch:
  - powernow-k8
  - powernow-k7
  - acpi-cpufreq

Tested with a patched DSDT which limits the first two cores (_PPC returns 1)
via _PPC, exposed by bios_limit:
# echo 2200000 >cpu2/cpufreq/scaling_max_freq
# cat cpu*/cpufreq/scaling_max_freq
2600000
2600000
2200000
2200000
# #scaling_max_freq shows general user/thermal/BIOS limitations

# cat cpu*/cpufreq/bios_limit
2600000
2600000
2800000
2800000
# #bios_limit only shows the HW/BIOS limitation

CC: Pallipadi Venkatesh <venkatesh.pallipadi@intel.com>
CC: Len Brown <lenb@kernel.org>
CC: davej@codemonkey.org.uk
CC: linux@dominikbrodowski.net

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Dave Jones <davej@redhat.com>
2009-11-24 13:33:34 -05:00
Mark Brown
bbe237aafe [CPUFREQ] Document units for transition latency
They're documented in the header but not in Documentation.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2009-11-24 13:33:34 -05:00
Alex Chiang
0cda8b91f2 [CPUFREQ] Documentation: ABI: /sys/devices/system/cpu/cpu#/cpufreq/
This is a complex interface and is already described in
Documentation/cpu-freq/, especially in the user-guide.txt file.

No need to copy/paste all that information. Let's just alert the reader
to the presence of the user-guide.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2009-11-24 13:33:33 -05:00
Benjamin Herrenschmidt
1e43bee9c7 Merge commit 'origin/master' into next 2009-11-24 17:16:30 +11:00
Gautham R Shenoy
3aa565f53c powerpc/pseries: Add hooks to put the CPU into an appropriate offline state
When a CPU is offlined on POWER currently, we call rtas_stop_self() and hand
the CPU back to the resource pool. This path is used for DLPAR which will
cause a change in the LPAR configuration which will be visible outside.

This patch changes the default state a CPU is put into when it is offlined.
On platforms which support ceding the processor to the hypervisor with
latency hint specifier value, during a cpu offline operation,
instead of calling rtas_stop_self(), we cede the vCPU to the hypervisor
while passing a latency hint specifier value. The Hypervisor can use this hint
to provide better energy savings. Also, during the offline
operation, the control of the vCPU remains with the LPAR as oppposed to
returning it to the resource pool.

The patch achieves this by creating an infrastructure to set the
preferred_offline_state() which can be either
- CPU_STATE_OFFLINE: which is the current behaviour of calling
  rtas_stop_self()

- CPU_STATE_INACTIVE: which cedes the vCPU to the hypervisor with the latency
  hint specifier.

The codepath which wants to perform a DLPAR operation can set the
preferred_offline_state() of a CPU to CPU_STATE_OFFLINE before invoking
cpu_down().

The patch also provides a boot-time command line argument to disable/enable
CPU_STATE_INACTIVE.

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-11-24 14:33:04 +11:00
Amerigo Wang
a242b41ded sctp: remove deprecated SCTP_GET_*_OLD stuffs
SCTP_GET_*_OLD stuffs are schedlued to be removed.

Cc: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: WANG Cong <amwang@redhat.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2009-11-23 15:53:58 -05:00
J. Bruce Fields
9b8b317d58 Merge commit 'v2.6.32-rc8' into HEAD 2009-11-23 12:34:58 -05:00
Dmitry Torokhov
d69249f4b6 Input: input-polldev, matrix-keypad - include in kernel doc
Make sure that polled input device and matrix keypad APIs are included
with the rest of input API when generating kernel documentation. Also
description of absres was missing as well.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-11-20 00:52:09 -08:00
Linus Torvalds
931ed94430 Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  ocfs2: Trivial cleanup of jbd compatibility layer removal
  ocfs2: Refresh documentation
  ocfs2: return f_fsid info in ocfs2_statfs()
  ocfs2: duplicate inline data properly during reflink.
  ocfs2: Move ocfs2_complete_reflink to the right place.
  ocfs2: Return -EINVAL when a device is not ocfs2.
2009-11-19 20:29:05 -08:00
Ryusuke Konishi
0234576d04 nilfs2: add norecovery mount option
This adds "norecovery" mount option which disables temporal write
access to read-only mounts or snapshots during mount/recovery.
Without this option, write access will be even performed for those
types of mounts; the temporal write access is needed to mount root
file system read-only after an unclean shutdown.

This option will be helpful when user wants to prevent any write
access to the device.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Eric Sandeen <sandeen@redhat.com>
2009-11-20 10:05:52 +09:00
Jiro SEKIBA
91f1953bf3 nilfs2: Using nobarrier option instead of barrier=off
Since most of fs using nofoobar style option,
modified barrier=off option as nobarrier.

Signed-off-by: Jiro SEKIBA <jir@unicus.jp>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20 10:05:47 +09:00
Eric Sandeen
e3bb52ae2b ext4: make "norecovery" an alias for "noload"
Users on the linux-ext4 list recently complained about differences
across filesystems w.r.t. how to mount without a journal replay.

In the discussion it was noted that xfs's "norecovery" option is
perhaps more descriptively accurate than "noload," so let's make
that an alias for ext4.

Also show this status in /proc/mounts

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-11-19 14:28:50 -05:00
Eric Sandeen
5328e63531 ext4: make trim/discard optional (and off by default)
It is anticipated that when sb_issue_discard starts doing
real work on trim-capable devices, we may see issues.  Make
this mount-time optional, and default it to off until we know
that things are working out OK.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-11-19 14:25:42 -05:00
David Howells
fee096deb4 CacheFiles: Catch an overly long wait for an old active object
Catch an overly long wait for an old, dying active object when we want to
replace it with a new one.  The probability is that all the slow-work threads
are hogged, and the delete can't get a look in.

What we do instead is:

 (1) if there's nothing in the slow work queue, we sleep until either the dying
     object has finished dying or there is something in the slow work queue
     behind which we can queue our object.

 (2) if there is something in the slow work queue, we return ETIMEDOUT to
     fscache_lookup_object(), which then puts us back on the slow work queue,
     presumably behind the deletion that we're blocked by.  We are then
     deferred for a while until we work our way back through the queue -
     without blocking a slow-work thread unnecessarily.

A backtrace similar to the following may appear in the log without this patch:

	INFO: task kslowd004:5711 blocked for more than 120 seconds.
	"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
	kslowd004     D 0000000000000000     0  5711      2 0x00000080
	 ffff88000340bb80 0000000000000046 ffff88002550d000 0000000000000000
	 ffff88002550d000 0000000000000007 ffff88000340bfd8 ffff88002550d2a8
	 000000000000ddf0 00000000000118c0 00000000000118c0 ffff88002550d2a8
	Call Trace:
	 [<ffffffff81058e21>] ? trace_hardirqs_on+0xd/0xf
	 [<ffffffffa011c4d8>] ? cachefiles_wait_bit+0x0/0xd [cachefiles]
	 [<ffffffffa011c4e1>] cachefiles_wait_bit+0x9/0xd [cachefiles]
	 [<ffffffff81353153>] __wait_on_bit+0x43/0x76
	 [<ffffffff8111ae39>] ? ext3_xattr_get+0x1ec/0x270
	 [<ffffffff813531ef>] out_of_line_wait_on_bit+0x69/0x74
	 [<ffffffffa011c4d8>] ? cachefiles_wait_bit+0x0/0xd [cachefiles]
	 [<ffffffff8104c125>] ? wake_bit_function+0x0/0x2e
	 [<ffffffffa011bc79>] cachefiles_mark_object_active+0x203/0x23b [cachefiles]
	 [<ffffffffa011c209>] cachefiles_walk_to_object+0x558/0x827 [cachefiles]
	 [<ffffffffa011a429>] cachefiles_lookup_object+0xac/0x12a [cachefiles]
	 [<ffffffffa00aa1e9>] fscache_lookup_object+0x1c7/0x214 [fscache]
	 [<ffffffffa00aafc5>] fscache_object_state_machine+0xa5/0x52d [fscache]
	 [<ffffffffa00ab4ac>] fscache_object_slow_work_execute+0x5f/0xa0 [fscache]
	 [<ffffffff81082093>] slow_work_execute+0x18f/0x2d1
	 [<ffffffff8108239a>] slow_work_thread+0x1c5/0x308
	 [<ffffffff8104c0f1>] ? autoremove_wake_function+0x0/0x34
	 [<ffffffff810821d5>] ? slow_work_thread+0x0/0x308
	 [<ffffffff8104be91>] kthread+0x7a/0x82
	 [<ffffffff8100beda>] child_rip+0xa/0x20
	 [<ffffffff8100b87c>] ? restore_args+0x0/0x30
	 [<ffffffff8104be17>] ? kthread+0x0/0x82
	 [<ffffffff8100bed0>] ? child_rip+0x0/0x20
	1 lock held by kslowd004/5711:
	 #0:  (&sb->s_type->i_mutex_key#7/1){+.+.+.}, at: [<ffffffffa011be64>] cachefiles_walk_to_object+0x1b3/0x827 [cachefiles]

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:12:05 +00:00
David Howells
60d543ca72 FS-Cache: Start processing an object's operations on that object's death
Start processing an object's operations when that object moves into the DYING
state as the object cannot be destroyed until all its outstanding operations
have completed.

Furthermore, make sure that read and allocation operations handle being woken
up on a dead object.  Such events are recorded in the Allocs.abt and
Retrvls.abt statistics as viewable through /proc/fs/fscache/stats.

The code for waiting for object activation for the read and allocation
operations is also extracted into its own function as it is much the same in
all cases, differing only in the stats incremented.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:11:45 +00:00
David Howells
201a15428b FS-Cache: Handle pages pending storage that get evicted under OOM conditions
Handle netfs pages that the vmscan algorithm wants to evict from the pagecache
under OOM conditions, but that are waiting for write to the cache.  Under these
conditions, vmscan calls the releasepage() function of the netfs, asking if a
page can be discarded.

The problem is typified by the following trace of a stuck process:

	kslowd005     D 0000000000000000     0  4253      2 0x00000080
	 ffff88001b14f370 0000000000000046 ffff880020d0d000 0000000000000007
	 0000000000000006 0000000000000001 ffff88001b14ffd8 ffff880020d0d2a8
	 000000000000ddf0 00000000000118c0 00000000000118c0 ffff880020d0d2a8
	Call Trace:
	 [<ffffffffa00782d8>] __fscache_wait_on_page_write+0x8b/0xa7 [fscache]
	 [<ffffffff8104c0f1>] ? autoremove_wake_function+0x0/0x34
	 [<ffffffffa0078240>] ? __fscache_check_page_write+0x63/0x70 [fscache]
	 [<ffffffffa00b671d>] nfs_fscache_release_page+0x4e/0xc4 [nfs]
	 [<ffffffffa00927f0>] nfs_release_page+0x3c/0x41 [nfs]
	 [<ffffffff810885d3>] try_to_release_page+0x32/0x3b
	 [<ffffffff81093203>] shrink_page_list+0x316/0x4ac
	 [<ffffffff8109372b>] shrink_inactive_list+0x392/0x67c
	 [<ffffffff813532fa>] ? __mutex_unlock_slowpath+0x100/0x10b
	 [<ffffffff81058df0>] ? trace_hardirqs_on_caller+0x10c/0x130
	 [<ffffffff8135330e>] ? mutex_unlock+0x9/0xb
	 [<ffffffff81093aa2>] shrink_list+0x8d/0x8f
	 [<ffffffff81093d1c>] shrink_zone+0x278/0x33c
	 [<ffffffff81052d6c>] ? ktime_get_ts+0xad/0xba
	 [<ffffffff81094b13>] try_to_free_pages+0x22e/0x392
	 [<ffffffff81091e24>] ? isolate_pages_global+0x0/0x212
	 [<ffffffff8108e743>] __alloc_pages_nodemask+0x3dc/0x5cf
	 [<ffffffff81089529>] grab_cache_page_write_begin+0x65/0xaa
	 [<ffffffff8110f8c0>] ext3_write_begin+0x78/0x1eb
	 [<ffffffff81089ec5>] generic_file_buffered_write+0x109/0x28c
	 [<ffffffff8103cb69>] ? current_fs_time+0x22/0x29
	 [<ffffffff8108a509>] __generic_file_aio_write+0x350/0x385
	 [<ffffffff8108a588>] ? generic_file_aio_write+0x4a/0xae
	 [<ffffffff8108a59e>] generic_file_aio_write+0x60/0xae
	 [<ffffffff810b2e82>] do_sync_write+0xe3/0x120
	 [<ffffffff8104c0f1>] ? autoremove_wake_function+0x0/0x34
	 [<ffffffff810b18e1>] ? __dentry_open+0x1a5/0x2b8
	 [<ffffffff810b1a76>] ? dentry_open+0x82/0x89
	 [<ffffffffa00e693c>] cachefiles_write_page+0x298/0x335 [cachefiles]
	 [<ffffffffa0077147>] fscache_write_op+0x178/0x2c2 [fscache]
	 [<ffffffffa0075656>] fscache_op_execute+0x7a/0xd1 [fscache]
	 [<ffffffff81082093>] slow_work_execute+0x18f/0x2d1
	 [<ffffffff8108239a>] slow_work_thread+0x1c5/0x308
	 [<ffffffff8104c0f1>] ? autoremove_wake_function+0x0/0x34
	 [<ffffffff810821d5>] ? slow_work_thread+0x0/0x308
	 [<ffffffff8104be91>] kthread+0x7a/0x82
	 [<ffffffff8100beda>] child_rip+0xa/0x20
	 [<ffffffff8100b87c>] ? restore_args+0x0/0x30
	 [<ffffffff8102ef83>] ? tg_shares_up+0x171/0x227
	 [<ffffffff8104be17>] ? kthread+0x0/0x82
	 [<ffffffff8100bed0>] ? child_rip+0x0/0x20

In the above backtrace, the following is happening:

 (1) A page storage operation is being executed by a slow-work thread
     (fscache_write_op()).

 (2) FS-Cache farms the operation out to the cache to perform
     (cachefiles_write_page()).

 (3) CacheFiles is then calling Ext3 to perform the actual write, using Ext3's
     standard write (do_sync_write()) under KERNEL_DS directly from the netfs
     page.

 (4) However, for Ext3 to perform the write, it must allocate some memory, in
     particular, it must allocate at least one page cache page into which it
     can copy the data from the netfs page.

 (5) Under OOM conditions, the memory allocator can't immediately come up with
     a page, so it uses vmscan to find something to discard
     (try_to_free_pages()).

 (6) vmscan finds a clean netfs page it might be able to discard (possibly the
     one it's trying to write out).

 (7) The netfs is called to throw the page away (nfs_release_page()) - but it's
     called with __GFP_WAIT, so the netfs decides to wait for the store to
     complete (__fscache_wait_on_page_write()).

 (8) This blocks a slow-work processing thread - possibly against itself.

The system ends up stuck because it can't write out any netfs pages to the
cache without allocating more memory.

To avoid this, we make FS-Cache cancel some writes that aren't in the middle of
actually being performed.  This means that some data won't make it into the
cache this time.  To support this, a new FS-Cache function is added
fscache_maybe_release_page() that replaces what the netfs releasepage()
functions used to do with respect to the cache.

The decisions fscache_maybe_release_page() makes are counted and displayed
through /proc/fs/fscache/stats on a line labelled "VmScan".  There are four
counters provided: "nos=N" - pages that weren't pending storage; "gon=N" -
pages that were pending storage when we first looked, but weren't by the time
we got the object lock; "bsy=N" - pages that we ignored as they were actively
being written when we looked; and "can=N" - pages that we cancelled the storage
of.

What I'd really like to do is alter the behaviour of the cancellation
heuristics, depending on how necessary it is to expel pages.  If there are
plenty of other pages that aren't waiting to be written to the cache that
could be ejected first, then it would be nice to hold up on immediate
cancellation of cache writes - but I don't see a way of doing that.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:11:35 +00:00
David Howells
e3d4d28b1c FS-Cache: Handle read request vs lookup, creation or other cache failure
FS-Cache doesn't correctly handle the netfs requesting a read from the cache
on an object that failed or was withdrawn by the cache.  A trace similar to
the following might be seen:

	CacheFiles: Lookup failed error -105
	[exe   ] unexpected submission OP165afe [OBJ6cac OBJECT_LC_DYING]
	[exe   ] objstate=OBJECT_LC_DYING [OBJECT_LC_DYING]
	[exe   ] objflags=0
	[exe   ] objevent=9 [fffffffffffffffb]
	[exe   ] ops=0 inp=0 exc=0
	Pid: 6970, comm: exe Not tainted 2.6.32-rc6-cachefs #50
	Call Trace:
	 [<ffffffffa0076477>] fscache_submit_op+0x3ff/0x45a [fscache]
	 [<ffffffffa0077997>] __fscache_read_or_alloc_pages+0x187/0x3c4 [fscache]
	 [<ffffffffa00b6480>] ? nfs_readpage_from_fscache_complete+0x0/0x66 [nfs]
	 [<ffffffffa00b6388>] __nfs_readpages_from_fscache+0x7e/0x176 [nfs]
	 [<ffffffff8108e483>] ? __alloc_pages_nodemask+0x11c/0x5cf
	 [<ffffffffa009d796>] nfs_readpages+0x114/0x1d7 [nfs]
	 [<ffffffff81090314>] __do_page_cache_readahead+0x15f/0x1ec
	 [<ffffffff81090228>] ? __do_page_cache_readahead+0x73/0x1ec
	 [<ffffffff810903bd>] ra_submit+0x1c/0x20
	 [<ffffffff810906bb>] ondemand_readahead+0x227/0x23a
	 [<ffffffff81090762>] page_cache_sync_readahead+0x17/0x19
	 [<ffffffff8108a99e>] generic_file_aio_read+0x236/0x5a0
	 [<ffffffffa00937bd>] nfs_file_read+0xe4/0xf3 [nfs]
	 [<ffffffff810b2fa2>] do_sync_read+0xe3/0x120
	 [<ffffffff81354cc3>] ? _spin_unlock_irq+0x2b/0x31
	 [<ffffffff8104c0f1>] ? autoremove_wake_function+0x0/0x34
	 [<ffffffff811848e5>] ? selinux_file_permission+0x5d/0x10f
	 [<ffffffff81352bdb>] ? thread_return+0x3e/0x101
	 [<ffffffff8117d7b0>] ? security_file_permission+0x11/0x13
	 [<ffffffff810b3b06>] vfs_read+0xaa/0x16f
	 [<ffffffff81058df0>] ? trace_hardirqs_on_caller+0x10c/0x130
	 [<ffffffff810b3c84>] sys_read+0x45/0x6c
	 [<ffffffff8100ae2b>] system_call_fastpath+0x16/0x1b

The object state might also be OBJECT_DYING or OBJECT_WITHDRAWING.

This should be handled by simply rejecting the new operation with ENOBUFS.
There's no need to log an error for it.  Events of this type now appear in the
stats file under Ops:rej.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:11:32 +00:00
David Howells
1bccf513ac FS-Cache: Fix lock misorder in fscache_write_op()
FS-Cache has two structs internally for keeping track of the internal state of
a cached file: the fscache_cookie struct, which represents the netfs's state,
and fscache_object struct, which represents the cache's state.  Each has a
pointer that points to the other (when both are in existence), and each has a
spinlock for pointer maintenance.

Since netfs operations approach these structures from the cookie side, they get
the cookie lock first, then the object lock.  Cache operations, on the other
hand, approach from the object side, and get the object lock first.  It is not
then permitted for a cache operation to get the cookie lock whilst it is
holding the object lock lest deadlock occur; instead, it must do one of two
things:

 (1) increment the cookie usage counter, drop the object lock and then get both
     locks in order, or

 (2) simply hold the object lock as certain parts of the cookie may not be
     altered whilst the object lock is held.

It is also not permitted to follow either pointer without holding the lock at
the end you start with.  To break the pointers between the cookie and the
object, both locks must be held.

fscache_write_op(), however, violates the locking rules: It attempts to get the
cookie lock without (a) checking that the cookie pointer is a valid pointer,
and (b) holding the object lock to protect the cookie pointer whilst it follows
it.  This is so that it can access the pending page store tree without
interference from __fscache_write_page().

This is fixed by splitting the cookie lock, such that the page store tracking
tree is protected by its own lock, and checking that the cookie pointer is
non-NULL before we attempt to follow it whilst holding the object lock.

The new lock is subordinate to both the cookie lock and the object lock, and so
should be taken after those.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:11:25 +00:00
David Howells
5753c44188 FS-Cache: Permit cache retrieval ops to be interrupted in the initial wait phase
Permit the operations to retrieve data from the cache or to allocate space in
the cache for future writes to be interrupted whilst they're waiting for
permission for the operation to proceed.  Typically this wait occurs whilst the
cache object is being looked up on disk in the background.

If an interruption occurs, and the operation has not yet been given the
go-ahead to run, the operation is dequeued and cancelled, and control returns
to the read operation of the netfs routine with none of the requested pages
having been read or in any way marked as known by the cache.

This means that the initial wait is done interruptibly rather than
uninterruptibly.

In addition, extra stats values are made available to show the number of ops
cancelled and the number of cache space allocations interrupted.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:11:19 +00:00
David Howells
52bd75fdb1 FS-Cache: Add counters for entry/exit to/from cache operation functions
Count entries to and exits from cache operation table functions.  Maintain
these as a single counter that's added to or removed from as appropriate.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:11:08 +00:00
David Howells
4fbf4291aa FS-Cache: Allow the current state of all objects to be dumped
Allow the current state of all fscache objects to be dumped by doing:

	cat /proc/fs/fscache/objects

By default, all objects and all fields will be shown.  This can be restricted
by adding a suitable key to one of the caller's keyrings (such as the session
keyring):

	keyctl add user fscache:objlist "<restrictions>" @s

The <restrictions> are:

	K	Show hexdump of object key (don't show if not given)
	A	Show hexdump of object aux data (don't show if not given)

And paired restrictions:

	C	Show objects that have a cookie
	c	Show objects that don't have a cookie
	B	Show objects that are busy
	b	Show objects that aren't busy
	W	Show objects that have pending writes
	w	Show objects that don't have pending writes
	R	Show objects that have outstanding reads
	r	Show objects that don't have outstanding reads
	S	Show objects that have slow work queued
	s	Show objects that don't have slow work queued

If neither side of a restriction pair is given, then both are implied.  For
example:

	keyctl add user fscache:objlist KB @s

shows objects that are busy, and lists their object keys, but does not dump
their auxiliary data.  It also implies "CcWwRrSs", but as 'B' is given, 'b' is
not implied.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:11:04 +00:00
David Howells
3bde31a4ac SLOW_WORK: Allow a requeueable work item to sleep till the thread is needed
Add a function to allow a requeueable work item to sleep till the thread
processing it is needed by the slow-work facility to perform other work.

Sometimes a work item can't progress immediately, but must wait for the
completion of another work item that's currently being processed by another
slow-work thread.

In some circumstances, the waiting item could instead - theoretically - put
itself back on the queue and yield its thread back to the slow-work facility,
thus waiting till it gets processing time again before attempting to progress.
This would allow other work items processing time on that thread.

However, this only works if there is something on the queue for it to queue
behind - otherwise it will just get a thread again immediately, and will end
up cycling between the queue and the thread, eating up valuable CPU time.

So, slow_work_sleep_till_thread_needed() is provided such that an item can put
itself on a wait queue that will wake it up when the event it is actually
interested in occurs, then call this function in lieu of calling schedule().

This function will then sleep until either the item's event occurs or another
work item appears on the queue.  If another work item is queued, but the
item's event hasn't occurred, then the work item should requeue itself and
yield the thread back to the slow-work facility by returning.

This can be used by CacheFiles for an object that is being created on one
thread to wait for an object being deleted on another thread where there is
nothing on the queue for the creation to go and wait behind.  As soon as an
item appears on the queue that could be given thread time instead, CacheFiles
can stick the creating object back on the queue and return to the slow-work
facility - assuming the object deletion didn't also complete.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:10:57 +00:00
David Howells
31ba99d304 SLOW_WORK: Allow the owner of a work item to determine if it is queued or not
Add a function (slow_work_is_queued()) to permit the owner of a work item to
determine if the item is queued or not.

The work item is counted as being queued if it is actually on the queue, not
just if it is pending.  If it is executing and pending, then it is not on the
queue, but will rather be put back on the queue when execution finishes.

This permits a caller to quickly work out if it may be able to put another,
dependent work item on the queue behind it, or whether it will have to wait
till that is finished.

This can be used by CacheFiles to work out whether the creation a new object
can be immediately deferred when it has to wait for an old object to be
deleted, or whether a wait must take place.  If a wait is necessary, then the
slow-work thread can otherwise get blocked, preventing the deletion from
taking place.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:10:53 +00:00
David Howells
8fba10a42d SLOW_WORK: Allow the work items to be viewed through a /proc file
Allow the executing and queued work items to be viewed through a /proc file
for debugging purposes.  The contents look something like the following:

    THR PID   ITEM ADDR        FL MARK  DESC
    === ===== ================ == ===== ==========
      0  3005 ffff880023f52348  a 952ms FSC: OBJ17d3: LOOK
      1  3006 ffff880024e33668  2 160ms FSC: OBJ17e5 OP60d3b: Write1/Store fl=2
      2  3165 ffff8800296dd180  a 424ms FSC: OBJ17e4: LOOK
      3  4089 ffff8800262c8d78  a 212ms FSC: OBJ17ea: CRTN
      4  4090 ffff88002792bed8  2 388ms FSC: OBJ17e8 OP60d36: Write1/Store fl=2
      5  4092 ffff88002a0ef308  2 388ms FSC: OBJ17e7 OP60d2e: Write1/Store fl=2
      6  4094 ffff88002abaf4b8  2 132ms FSC: OBJ17e2 OP60d4e: Write1/Store fl=2
      7  4095 ffff88002bb188e0  a 388ms FSC: OBJ17e9: CRTN
    vsq     - ffff880023d99668  1 308ms FSC: OBJ17e0 OP60f91: Write1/EnQ fl=2
    vsq     - ffff8800295d1740  1 212ms FSC: OBJ16be OP4d4b6: Write1/EnQ fl=2
    vsq     - ffff880025ba3308  1 160ms FSC: OBJ179a OP58dec: Write1/EnQ fl=2
    vsq     - ffff880024ec83e0  1 160ms FSC: OBJ17ae OP599f2: Write1/EnQ fl=2
    vsq     - ffff880026618e00  1 160ms FSC: OBJ17e6 OP60d33: Write1/EnQ fl=2
    vsq     - ffff880025a2a4b8  1 132ms FSC: OBJ16a2 OP4d583: Write1/EnQ fl=2
    vsq     - ffff880023cbe6d8  9 212ms FSC: OBJ17eb: LOOK
    vsq     - ffff880024d37590  9 212ms FSC: OBJ17ec: LOOK
    vsq     - ffff880027746cb0  9 212ms FSC: OBJ17ed: LOOK
    vsq     - ffff880024d37ae8  9 212ms FSC: OBJ17ee: LOOK
    vsq     - ffff880024d37cb0  9 212ms FSC: OBJ17ef: LOOK
    vsq     - ffff880025036550  9 212ms FSC: OBJ17f0: LOOK
    vsq     - ffff8800250368e0  9 212ms FSC: OBJ17f1: LOOK
    vsq     - ffff880025036aa8  9 212ms FSC: OBJ17f2: LOOK

In the 'THR' column, executing items show the thread they're occupying and
queued threads indicate which queue they're on.  'PID' shows the process ID of
a slow-work thread that's executing something.  'FL' shows the work item flags.
'MARK' indicates how long since an item was queued or began executing.  Lastly,
the 'DESC' column permits the owner of an item to give some information.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:10:51 +00:00
Jens Axboe
6b8268b17a SLOW_WORK: Add delayed_slow_work support
This adds support for starting slow work with a delay, similar
to the functionality we have for workqueues.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:10:47 +00:00
Jens Axboe
0160950297 SLOW_WORK: Add support for cancellation of slow work
Add support for cancellation of queued slow work and delayed slow work items.
The cancellation functions will wait for items that are pending or undergoing
execution to be discarded by the slow work facility.

Attempting to enqueue work that is in the process of being cancelled will
result in ECANCELED.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:10:43 +00:00
Jens Axboe
4d8bb2cbcc SLOW_WORK: Make slow_work_ops ->get_ref/->put_ref optional
Make the ability for the slow-work facility to take references on a work item
optional as not everyone requires this.

Even the internal slow-work stubs them out, so those can be got rid of too.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:10:39 +00:00
David Howells
3d7a641e54 SLOW_WORK: Wait for outstanding work items belonging to a module to clear
Wait for outstanding slow work items belonging to a module to clear when
unregistering that module as a user of the facility.  This prevents the put_ref
code of a work item from being taken away before it returns.

Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-19 18:10:23 +00:00
David S. Miller
3505d1a9fd Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/sfc/sfe4001.c
	drivers/net/wireless/libertas/cmd.c
	drivers/staging/Kconfig
	drivers/staging/Makefile
	drivers/staging/rtl8187se/Kconfig
	drivers/staging/rtl8192e/Kconfig
2009-11-18 22:19:03 -08:00
Takashi Iwai
b4e818768d ALSA: hda - Fix mute-LED sync on HP laptops with IDT92HD83xxx codecs
The mute-LED isn't synchronized with the actual mute state on some
HP laptops with IDT 92HD83xxx codecs.  A similar hack using
check_power_status callback is added for this codec, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-18 17:22:07 +01:00
Eric W. Biederman
86926d0096 sysctl: Remove CTL_NONE and CTL_UNNUMBERED
Now that the sysctl structures no longer have a ctl_name field
there is no reason to retain the definitions for CTL_NONE and
CTL_UNNUMBERED, or to explain their historic usage.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2009-11-18 08:14:55 -08:00
Linus Torvalds
cb20c28a9c Merge branch 'hostprogs-wmissing-prototypes' of git://git.kernel.org/pub/scm/linux/kernel/git/josh/linux-misc
* 'hostprogs-wmissing-prototypes' of git://git.kernel.org/pub/scm/linux/kernel/git/josh/linux-misc:
  Makefile: Add -Wmising-prototypes to HOSTCFLAGS
  oss: Mark loadhex static in hex2hex.c
  dtc: Mark various internal functions static
  dtc: Set "noinput" in the lexer to avoid an unused function
  drm: radeon: Mark several functions static in mkregtable
  arch/sparc/boot/*.c: Mark various internal functions static
  arch/powerpc/boot/addRamDisk.c: Mark several internal functions static
  arch/alpha/boot/tools/objstrip.c: Mark "usage" static
  Documentation/vm/page-types.c: Declare checked_open static
  genksyms: Mark is_reserved_word static
  kconfig: Mark various internal functions static
  kconfig: Make zconf.y work with current bison
2009-11-17 09:14:49 -08:00
Wolfram Sang
81593c1cea net/can/mpc52xx_can: improve properties and their description
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: devicetree-discuss@ozlabs.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-17 03:54:04 -08:00
Ingo Molnar
a7b63425a4 Merge branch 'perf/core' into perf/probes
Resolved merge conflict in tools/perf/Makefile

Merge reason: we want to queue up a dependent patch.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-17 10:17:47 +01:00
Takashi Iwai
d019361a08 ALSA: hda - Add description of beep_mode in ALSA-Configuration.txt
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-16 12:03:49 +01:00
Josh Triplett
1b98c00bf3 Documentation/vm/page-types.c: Declare checked_open static
Nothing outside of Documentation/vm/page-types.c references
checked_open.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
2009-11-15 15:01:38 -08:00
Ingo Molnar
39dc78b651 Merge commit 'v2.6.32-rc7' into perf/core
Merge reason: pick up perf fixlets

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-15 09:50:41 +01:00
Wolfram Sang
afa17a500a net/can: add driver for mscan family & mpc52xx_mscan
Taken from socketcan-svn, fixed remaining todos, cleaned up, tested with a
phyCORE-MPC5200B-IO and a custom board.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-13 20:47:03 -08:00
Matthew Garrett
f6c06b6807 vc: Add support for hiding the cursor when creating VTs
Add support for setting a global default for whether or not a visible
cursor should be enabled when creating VCs. The default will be to do so,
unless overridden by the user at boot time or by a driver.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
LKML-Reference: <1258143251-5818-1-git-send-email-mjg@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-11-13 15:54:27 -08:00
Sunil Mushran
7ab8f5244d ocfs2: Refresh documentation
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
2009-11-13 15:45:01 -08:00
Albrecht Dreß
13b600b59d mpc52xx/wdt: OF property to enable the WDT on boot
Add the "fsl,wdt-on-boot" OF property as to reserve a GPT as WDT which may
be a requirement in safety-related (e.g. ISO/EN 61508) applications.

Signed-off-by: Albrecht Dreß <albrecht.dress@arcor.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2009-11-13 11:09:30 -07:00
Anton Vorontsov
8c68e2f788 powerpc/86xx: Add power management support for MPC8610HPCD boards
This patch adds needed nodes and properties to support suspend/resume
on the MPC8610HPCD boards.

There is a dedicated switch (SW9) that is used to wake up the boards.
By default the SW9 button is routed to IRQ8, but could be re-routed
(via PIXIS) to sreset.

With 'no_console_suspend' kernel command line argument specified, the
board is also able to wakeup upon serial port input.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Scott Wood <scottwood@freescale.com> [dts]
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-11-11 21:43:30 -06:00
Linus Torvalds
799dd75b1a Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c: Add an interface to lock/unlock an I2C bus segment
  i2c-piix4: Modify code name SB900 to Hudson-2
2009-11-09 09:58:31 -08:00
Naohiro Ooiwa
f84d49b218 signal: Print warning message when dropping signals
When the system has too many timers or too many aggregate
queued signals, the EAGAIN error is returned to application
from kernel, including timer_create() [POSIX.1b].

It means that the app exceeded the limit of pending signals,
but in general application writers do not expect this
outcome and the current silent failure can cause rare app
failures under very high load.

This patch adds a new message when we reach the limit
and if print_fatal_signals is enabled:

    task/1234: reached RLIMIT_SIGPENDING, dropping signal

If you see this message and your system behaved unexpectedly,
you can run following command to lift the limit:

   # ulimit -i unlimited

With help from Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>.

Signed-off-by: Naohiro Ooiwa <nooiwa@miraclelinux.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: oleg@redhat.com
LKML-Reference: <4AF6E7E2.9080406@miraclelinux.com>
[ Modified a few small details, gave surrounding code some love. ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-09 09:44:26 +01:00
Nick Bowler
0e6779bbcb docs: Describe the 'C' taint flag in oops-tracing.txt
If some of the flags are documented there, they all should be.

Signed-off-by: Nick Bowler <nbowler@elliptictech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-09 09:40:56 +01:00
Randy Dunlap
7beeec88e5 docs: fix core_pipe_limit info
Fix typos in core_pipe_limit info.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-09 09:40:55 +01:00
Amerigo Wang
1039c6ba67 fix URL in hpet.txt
That URL is out of date. Update it.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Matt LaPlante <kernel1@cyberdogtech.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: WANG Cong <amwang@redhat.com>
Acked-by: Matt LaPlante <kernel@cyberdogtech.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-09 09:40:54 +01:00
Dominik Brodowski
9cb495bb41 pcmcia: remove now-defunct cs_error, pcmcia_error_{func,ret}
As all in-tree drivers have been converted to not use cs_error() any more,
drop these functions and definitions, and update the Documentation.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-09 08:30:06 +01:00
Dominik Brodowski
91284224da pcmcia: add new CIS access helpers
As a replacement to pcmcia_get_{first,next}_tuple() and
pcmcia_get_tuple_data(), three new -- and easier to use --
functions are added:

- pcmcia_get_tuple() to get the very first CIS entry of one
  type.

- pcmcia_loop_tuple() to loop over all CIS entries of one type.

- pcmcia_get_mac_from_cis() to read out the hardware MAC address
  from CISTPL_FUNCE.

Only a handful of drivers need these functions anyway, as most
CIS access is already handled by pcmcia_loop_config(), which
now shares the same backed (pccard_loop_tuple()) with
pcmcia_loop_tuple().

A pcmcia_get_mac_from_cis() bug noted by Komuro
<komurojun-mbn@nifty.com> has been fixed in this revision.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2009-11-08 18:06:54 +01:00
Crane Cai
3806e94b01 i2c-piix4: Modify code name SB900 to Hudson-2
Change SB900 to its formal code name Hudson-2.

Signed-off-by: Crane Cai <crane.cai@amd.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-11-07 13:10:46 +01:00
J. Bruce Fields
ea4878a24d nfs: move more to Documentation/filesystems/nfs
Oops: I missed two files in the first commit that created this
directory.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-11-06 14:01:02 -05:00
Len Brown
12308a2f27 Merge branches 'misc', 'eeepc-laptop' and 'bugzilla-14445' into release 2009-11-05 18:31:18 -05:00
Frans Pop
3d8e3ad879 thermal: add sanity check for the passive attribute
Values below 1000 milli-celsius don't make sense and can cause the
system to go into a thermal heart attack: the actual temperature
will always be lower and thus the system will be throttled down to
its lowest setting.

An additional problem is that values below 1000 will show as 0 in
/proc/acpi/thermal/TZx/trip_points:passive.

cat passive
0
echo -n 90 >passive
bash: echo: write error: Invalid argument
echo -n 90000 >passive
cat passive
90000

Signed-off-by: Frans Pop <elendil@planet.nl>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-05 18:18:10 -05:00
Frans Pop
29226ed3c3 thermal: sysfs-api.txt - document passive attribute for thermal zones
Signed-off-by: Frans Pop <elendil@planet.nl>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-05 18:11:18 -05:00
Frans Pop
38bb0849a6 thermal: sysfs-api.txt - reformat for improved readability
The document currently uses large indentations which make the text
too wide for easy readability. Also improve general consistency.

Signed-off-by: Frans Pop <elendil@planet.nl>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-11-05 18:06:05 -05:00
Jaroslav Kysela
ad1cd74506 ALSA: rename "PC Speaker" controls to "Speaker"
To unify control names, rename "PC Speaker" to "Speaker" for PPC ALSA drivers.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-05 09:00:21 +01:00
Jaroslav Kysela
d355c82a01 ALSA: rename "PC Speaker" and "PC Beep" controls to "Beep"
To avoid confusion in control names for the standard analog PC Beep generator
using a small Internal PC Speaker, rename all related "PC Speaker" and "PC
Beep" controls to "Beep" only. This name is more universal and can be also
used on more platforms without confusion.

Introduce also "Internal Speaker" in ControlNames.txt for systems with
full-featured build-in internal speaker.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-05 09:00:18 +01:00
Masami Hiramatsu
77b44d1b7c tracing/kprobes: Rename Kprobe-tracer to kprobe-event
Rename Kprobes-based event tracer to kprobes-based tracing event
(kprobe-event), since it is not a tracer but an extensible
tracing event interface.

This also changes CONFIG_KPROBE_TRACER to CONFIG_KPROBE_EVENT
and sets it y by default.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
LKML-Reference: <20091104001247.3454.14131.stgit@harusame>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-04 13:02:48 +01:00
Dhaval Giani
45a5c8bad8 sched: Add USER_SCHED to feature removal list
Peter Zijlstra suggested that we remove USER_SCHED at:

   http://lkml.org/lkml/2009/3/21/67

Removing USER_SCHED removes a lot of code from the scheduler
and simplifies the code.

We already have the ability to do user based classification
which is tightened using PAM in userspace.

Schedule USER_SCHED for removal in 2.6.34

Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: Serge E. Hallyn <serue@us.ibm.com>
Cc: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
LKML-Reference: <20091103214544.GI5495@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-04 12:40:26 +01:00
Ingo Molnar
a2e7127153 Merge commit 'v2.6.32-rc6' into perf/core
Conflicts:
	tools/perf/Makefile

Merge reason: Resolve the conflict, merge to upstream and merge in
              perf fixes so we can add a dependent patch.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-04 11:59:45 +01:00
Jens Axboe
2058297d2d Merge branch 'for-linus' into for-2.6.33
Conflicts:
	block/cfq-iosched.c

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-11-03 21:14:39 +01:00
Linus Torvalds
d4da6c9ccf Revert "ext4: Remove journal_checksum mount option and enable it by default"
This reverts commit d0646f7b63, as
requested by Eric Sandeen.

It can basically cause an ext4 filesystem to miss recovery (and thus get
mounted with errors) if the journal checksum does not match.

Quoth Eric:

   "My hand-wavy hunch about what is happening is that we're finding a
    bad checksum on the last partially-written transaction, which is
    not surprising, but if we have a wrapped log and we're doing the
    initial scan for head/tail, and we abort scanning on that bad
    checksum, then we are essentially running an unrecovered filesystem.

    But that's hand-wavy and I need to go look at the code.

    We lived without journal checksums on by default until now, and at
    this point they're doing more harm than good, so we should revert
    the default-changing commit until we can fix it and do some good
    power-fail testing with the fixes in place."

See

	http://bugzilla.kernel.org/show_bug.cgi?id=14354

for all the gory details.

Requested-by: Eric Sandeen <sandeen@redhat.com>
Cc: Theodore Tso <tytso@mit.edu>
Cc: Alexey Fisher <bug-track@fisher-privat.net>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Mathias Burén <mathias.buren@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-02 10:15:27 -08:00
Linus Torvalds
20107f84b2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Don't check invalid HP pin
  ALSA: dummy - Fix descriptions of pcm_substreams parameter
  ALSA: pcmcia: use dynamic debug infrastructure, deprecate CS_CHECK (sound)
  ALSA: hda: Use quirk mask for Dell Inspiron Mini9/Vostro A90 using ALC268
  sound: via82xx: deactivate DXS controls of inactive streams
  ALSA: snd-usb-caiaq: Bump version number to 1.3.20
  ALSA: snd-usb-caiaq: Lock on stream start/unpause
  ALSA: snd-usb-caiaq: Missing lock around use of buffer positions
  ALSA: sound/parisc: Move dereference after NULL test
  ALSA: sound: Move dereference after NULL test and drop unnecessary NULL tests
  ALSA: hda_intel: Add the Linux device ID for NVIDIA HDA controller
  ALSA: pcsp - Fix nforce workaround
  ALSA: SND_CS5535AUDIO: Remove the X86 platform dependency
  ASoC: Amstrad Delta: add info about the line discipline requirement to Kconfig help text
  ASoC: Fix possible codec_dai->ops NULL pointer problems
  ALSA: hda - Fix capture source checks for ALC662/663 codecs
  ASoC: Serialize access to dapm_power_widgets()
2009-11-02 09:50:22 -08:00
Linus Torvalds
a5e3013d66 Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  tracing: Remove cpu arg from the rb_time_stamp() function
  tracing: Fix comment typo and documentation example
  tracing: Fix trace_seq_printf() return value
  tracing: Update *ppos instead of filp->f_pos
2009-11-02 09:45:44 -08:00
Takashi Iwai
23aebca486 ALSA: dummy - Fix descriptions of pcm_substreams parameter
Now up to 128 substreams are supported.

Reported-by: Adrian Bridgett <adrian@smop.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-02 14:11:55 +01:00
Stas Sergeev
bcc2c6b7cb ALSA: snd-pcsp: add nopcm mode
Currently, if the high-res timers are unavailable, snd-pcsp does not
initialize. People who choose it over pcspkr, loose their console beeps
in that case and get annoyed.
With this patch, the console beeps remain regardless of the high-res
timers. Additionally, the "nopcm" modparam is added to forcibly
disable the PCM capabilities of the driver.

Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-11-01 11:13:19 +01:00
Takashi Iwai
e87a3dd33e Merge branch 'fix/misc' into topic/misc 2009-11-01 11:11:07 +01:00
Alex Chiang
657348a056 Documentation: ABI: /sys/devices/system/cpu/cpu#/node
Describe NUMA node symlink created for CPUs when CONFIG_NUMA is set.

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-30 14:59:53 -07:00
Alex Chiang
c1fb5c4751 Documentation: ABI: /sys/devices/system/cpu/cpuidle/
Document cpuidle sysfs attributes by reading code, Documentation/cpuidle/,
and git logs.

Cc: Venki Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-30 14:59:52 -07:00
Alex Chiang
e6dcfa7c61 Documentation: ABI: /sys/devices/system/cpu/sched_[mc|smt]_power_savings
Document sched_[mc|smt]_power_savings by reading existing code and
git logs.

Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-30 14:59:52 -07:00
Alex Chiang
663fb2fc73 Documentation: ABI: /sys/devices/system/cpu/cpu#/ topology files
Add brief descriptions for the following sysfs files:

	/sys/devices/system/cpu/cpu#/topology/core_id
	/sys/devices/system/cpu/cpu#/topology/core_siblings
	/sys/devices/system/cpu/cpu#/topology/core_siblings_list
	/sys/devices/system/cpu/cpu#/topology/physical_package_id
	/sys/devices/system/cpu/cpu#/topology/thread_siblings
	/sys/devices/system/cpu/cpu#/topology/thread_siblings_list

The descriptions in Documentation/cputopology.txt weren't very
informative, so I attempted a better description based on code
reading and hopeful guessing.

Updated Documentation/cputopology.txt with the better descriptions and
fixed some style issues.

Cc: Mike Travis <travis@sgi.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-30 14:59:52 -07:00
Alex Chiang
d93fc863d2 Documentation: ABI: /sys/devices/system/cpu/ topology files
Add brief descriptions for the following sysfs files:

	/sys/devices/system/cpu/kernel_max
	/sys/devices/system/cpu/offline
	/sys/devices/system/cpu/online
	/sys/devices/system/cpu/possible
	/sys/devices/system/cpu/present

Excerpted the relevant information from Documentation/cputopology.txt
and pointed back to cputopology.txt as the authoritative source of
information.

Cc: Mike Travis <travis@sgi.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-30 14:59:52 -07:00
Alex Chiang
2ceb3fb0a7 Documentation: ABI: document /sys/devices/system/cpu/
This interface has been around for a long time, but hasn't been
officially documented.

Document the top level sysfs directory for CPU attributes.

Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-30 14:59:52 -07:00
Alex Chiang
468727ab12 Documentation: ABI: rename sysfs-devices-cache_disable properly
Rename sysfs-devices-cache_disable to sysfs-devices-system-cpu, in
order to keep a stricter correlation between a sysfs directory and
its documentation.

Reported-by: David Rientjes <rientjes@google.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-30 14:59:52 -07:00
Yang, Bo
a0b7736828 [SCSI] megaraid_sas: Update version number and documentation
Signed-off-by Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-10-29 13:03:22 -04:00
Linus Torvalds
3242f9804b Merge branch 'hwpoison-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6
* 'hwpoison-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6:
  HWPOISON: fix invalid page count in printk output
  HWPOISON: Allow schedule_on_each_cpu() from keventd
  HWPOISON: fix/proc/meminfo alignment
  HWPOISON: fix oops on ksm pages
  HWPOISON: Fix page count leak in hwpoison late kill in do_swap_page
  HWPOISON: return early on non-LRU pages
  HWPOISON: Add brief hwpoison description to Documentation
  HWPOISON: Clean up PR_MCE_KILL interface
2009-10-29 08:20:00 -07:00
Darrick J. Wong
115a57c5b3 hwmon: enhance the sysfs API for power meters
Augment the documentation of the hwmon sysfs API to accomodate ACPI power
meters and the current desired behavior of power capping hardware drivers.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-29 07:39:30 -07:00
Ingo Molnar
9de09ace8d Merge branch 'tracing/urgent' into tracing/core
Merge reason: Pick up fixes and move base from -rc1 to -rc5.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-29 09:02:20 +01:00
J. Bruce Fields
dc7a08166f nfs: new subdir Documentation/filesystems/nfs
We're adding enough nfs documentation that it may as well have its own
subdirectory.

Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-10-27 19:34:04 -04:00
J. Bruce Fields
e343eb0d60 Merge commit 'v2.6.32-rc5' into for-2.6.33 2009-10-27 18:45:17 -04:00
Paul E. McKenney
64179861cb rcu: Add synchronize_srcu_expedited() to the documentation
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
Cc: avi@redhat.com
Cc: mtosatti@redhat.com
LKML-Reference: <12565226354176-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-26 09:40:31 +01:00
Ryota Ozaki
ce0e7b28fb sched, cpuacct: Fix niced guest time accounting
CPU time of a guest is always accounted in 'user' time
without concern for the nice value of its counterpart
process although the guest is scheduled under the nice
value.

This patch fixes the defect and accounts cpu time of
a niced guest in 'nice' time as same as a niced process.

And also the patch adds 'guest_nice' to cpuacct. The
value provides niced guest cpu time which is like 'nice'
to 'user'.

The original discussions can be found here:

  http://www.mail-archive.com/kvm@vger.kernel.org/msg23982.html
  http://www.mail-archive.com/kvm@vger.kernel.org/msg23860.html

Signed-off-by: Ryota Ozaki <ozaki.ryota@gmail.com>
Acked-by: Avi Kivity <avi@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1256314810-7897-1-git-send-email-ozaki.ryota@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-25 17:31:30 +01:00
Jiri Olsa
67b394f7f2 tracing: Fix comment typo and documentation example
Trivial patch to fix a documentation example and to fix a
comment.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091023233646.871719877@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-24 11:07:50 +02:00
Eric Paris
6e8e16c7bc SELinux: add .gitignore files for dynamic classes
The SELinux dynamic class work in c6d3aaa4e3
creates a number of dynamic header files and scripts.  Add .gitignore files
so git doesn't complain about these.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Stephen D. Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
2009-10-24 09:42:27 +08:00
Ingo Molnar
4331595650 Merge branch 'perf/core' into perf/probes
Conflicts:
	tools/perf/Makefile

Merge reason:

 - fix the conflict
 - pick up the pr_*() infrastructure to queue up dependent patch

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-23 08:23:20 +02:00
Linus Torvalds
964fe080d9 Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  move virtrng_remove to .devexit.text
  move virtballoon_remove to .devexit.text
  virtio_blk: Revert serial number support
  virtio: let header files include virtio_ids.h
  virtio_blk: revert QUEUE_FLAG_VIRT addition
2009-10-23 07:35:16 +09:00
Christian Borntraeger
e95646c3ec virtio: let header files include virtio_ids.h
Rusty,

commit 3ca4f5ca73
    virtio: add virtio IDs file
moved all device IDs into a single file. While the change itself is
a very good one, it can break userspace applications. For example
if a userspace tool wanted to get the ID of virtio_net it used to
include virtio_net.h. This does no longer work, since virtio_net.h
does not include virtio_ids.h.
This patch moves all "#include <linux/virtio_ids.h>" from the C
files into the header files, making the header files compatible with
the old ones.

In addition, this patch exports virtio_ids.h to userspace.

CC: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-10-22 16:39:28 +10:30
James Morris
3e1c2515ac security: remove root_plug
Remove the root_plug example LSM code.  It's unmaintained and
    increasingly broken in various ways.

    Made at the 2009 Kernel Summit in Tokyo!

    Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
    Signed-off-by: James Morris <jmorris@namei.org>
2009-10-20 14:26:16 +09:00
Eric Paris
cdc321ff0a inotify: deprecate the inotify kernel interface
In 2.6.33 there will be no users of the inotify interface.  Mark it for
removal as fsnotify is more generic and is easier to use.

Signed-off-by: Eric Paris <eparis@redhat.com>
2009-10-18 15:49:38 -04:00
Ingo Molnar
bb3c3e8071 Merge commit 'v2.6.32-rc5' into perf/probes
Conflicts:
	kernel/trace/trace_event_profile.c

Merge reason: update to -rc5 and resolve conflict.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-17 09:58:25 +02:00
Linus Torvalds
48593229ad Merge branch 'docs-next' of git://git.lwn.net/linux-2.6
* 'docs-next' of git://git.lwn.net/linux-2.6:
  Update flex_arrays.txt
2009-10-15 15:21:42 -07:00
Linus Torvalds
59c0b586ae Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  USB: gadget: Fix EEM driver comments and VID/PID
  usb-storage: Workaround devices with bogus sense size
  USB: ehci: Fix IST boundary checking interval math.
  USB: option: Support for AIRPLUS MCD650 Datacard
  USB: whci-hcd: always do an update after processing a halted qTD
  USB: whci-hcd: handle early deletion of endpoints
  USB: wusb: don't use the stack to read security descriptor
  USB: rename Documentation/ABI/.../sysfs-class-usb_host
2009-10-15 15:05:33 -07:00
David Rientjes
78eb00cc57 slub: allow stats to be cleared
When collecting slub stats for particular workloads, it's necessary to
collect each statistic for all caches before the job is even started
because the counters are usually greater than zero just from boot and
initialization.

This allows a statistic to be cleared on each cpu by writing '0' to its
sysfs file.  This creates a baseline for statistics of interest before
the workload is started.

Setting a statistic to a particular value is not supported, so all values
written to these files other than '0' returns -EINVAL.

Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2009-10-15 21:34:12 +03:00
Jonathan Corbet
1243ba98e3 Update flex_arrays.txt
The 2.6.32 merge window brought a number of changes to the flexible array
API; this patch updates the documentation to match the new state of
affairs.

Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2009-10-15 07:25:20 -06:00
Ingo Molnar
713490e02e Merge branch 'tracing/core' into perf/core
Merge reason: to add event filter support we need the following
commits from the tracing tree:

 3f6fe06: tracing/filters: Unify the regex parsing helpers
 1889d20: tracing/filters: Provide basic regex support
 737f453: tracing/filters: Cleanup useless headers

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-15 11:34:00 +02:00
Paul E. McKenney
0edf1a683e rcu: Update trace.txt documentation for blocked-tasks lists
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
Cc: npiggin@suse.de
Cc: jens.axboe@oracle.com
LKML-Reference: <12555405592804-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-15 11:20:23 +02:00
Paul E. McKenney
bd58b43003 rcu: Update trace.txt documentation to reflect recent changes
o	Remove the CONFIG_PREEMPT_RCU documentation since this
	config option has now been removed.

o	Change the now-incorrect references to "rcu" labels to
	instead be "rcu_sched".

o	Add notes stating that CONFIG_TREE_PREEMPT_RCU kernels will
	have additional "rcu_preempt" output.

o	Note the new "oqlen" field in the rcuhier output (for
	RCU callbacks orphaned by an offlined CPU).

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
Cc: npiggin@suse.de
Cc: jens.axboe@oracle.com
LKML-Reference: <1255540559799-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-15 11:20:23 +02:00
Linus Torvalds
a3ccf63ee6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: sbp2: provide fallback if mgt_ORB_timeout is missing
  ieee1394: add documentation entry to MAINTAINERS
  ieee1394: update URLs in debugging-via-ohci1394.txt
2009-10-14 15:36:19 -07:00
Linus Torvalds
ea87644105 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86/paravirt: Use normal calling sequences for irq enable/disable
  x86: fix kernel panic on 32 bits when profiling
  x86: Fix Suspend to RAM freeze on Acer Aspire 1511Lmi laptop
  x86, vmi: Mark VMI deprecated and schedule it for removal
2009-10-14 15:24:32 -07:00
David Vrabel
99b830aa55 USB: rename Documentation/ABI/.../sysfs-class-usb_host
The usb_host class is no more.  Rename its documentation file (which
only contained WUSB specific files) to .../sysfs-class-uwb_rc-wusbhc.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-14 14:54:42 -07:00
Cyrill Gorcunov
9636bc0555 x86, apic: Explain show_lapic= in kernel parameters list
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: yinghai@kernel.org
Cc: macro@linux-mips.org
LKML-Reference: <20091014150904.GA5259@lenovo>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-14 17:28:05 +02:00
Frederic Weisbecker
459c6d15a0 tracing: Document HAVE_SYSCALL_TRACEPOINTS needs
Document the arch needed requirements to get the support for syscalls
tracing.

v2: HAVE_FTRACE_SYSCALLS have been changed to HAVE_SYSCALL_TRACEPOINTS
    recently. Update this config name in the documentation then.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
2009-10-14 09:54:38 +02:00
Linus Torvalds
ae445b9134 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Allow all formats as default for Nvidia HDMI
  ALSA: aaci: ARM1176 aaci-pl041 AC97 register read timeout
  ALSA: hda - Fix volume-knob setup for Dell laptops with STAC9228
  ALSA: hda - Fix mute sound with STAC9227/9228 codecs
  ALSA: bt87x - Add a whitelist for Pinnacle PCTV (11bd:0012)
  ALSA: hda - Fix overflow of spec->init_verbs in patch_realtek.c
  ALSA: ice1724 - Make call to set hw params succeed on ESI Juli@
  ALSA: ice1724: Fix surround on Chaintech AV-710
  ALSA: hda - Add full rates/formats support for Nvidia HDMI
2009-10-13 10:10:18 -07:00
Takashi Iwai
fb66ebd884 Merge branch 'fix/hda' into for-linus 2009-10-13 16:09:56 +02:00
Takashi Iwai
54930531a0 ALSA: hda - Fix mute sound with STAC9227/9228 codecs
On FSC laptops, the sound gets muted gradually when the volume is chnaged.
This is due to the wrong volume-knob widget setup.  The delta bit (bit 7)
shouldn't be set for these devices.

This patch adds a new quirk to set the value 0x7f to the widget 0x24
instead of 0xff.

Reference: Novell bnc#546006
	http://bugzilla.novell.com/show_bug.cgi?id=546006

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-10-13 15:29:34 +02:00
Ingo Molnar
1bac0497ef Merge branch 'tracing/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core 2009-10-13 12:03:08 +02:00
Jan Kara
6dbce52182 ext3: Update documentation about ext3 quota mount options
Signed-off-by: Jan Kara <jack@suse.cz>
2009-10-13 00:06:43 +02:00
Masami Hiramatsu
2e06ff6389 tracing/kprobes: Make special variable names more self-explainable
Rename special variables to more self-explainable names as below:
- $rv to $retval
- $sa to $stack
- $aN to $argN
- $sN to $stackN

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Frank Ch. Eigler <fche@redhat.com>
LKML-Reference: <20091007222759.1684.3319.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2009-10-12 23:30:29 +02:00
Stefan Assmann
369bc18f9a ftrace: add kernel command line graph function filtering
Add a command line parameter to allow limiting the function graphs
that are traced on boot up from the given top-level callers , when
ftrace=function_graph is specified.

This patch adds the following command line option:
ftrace_graph_filter=function-list

Where function-list is a comma separated list of functions to filter.

[fweisbec@gmail.com: picked the documentation changes from the v2 patch]

Signed-off-by: Stefan Assmann <sassmann@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <4AD2DEB9.2@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2009-10-12 22:17:21 +02:00
Masami Hiramatsu
99329c44f2 tracing/kprobes: Remove '$ra' special variable
Remove '$ra' (return address) because it is already shown at the head of
each entry.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Frank Ch. Eigler <fche@redhat.com>
LKML-Reference: <20091007222748.1684.12711.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2009-10-12 19:24:05 +02:00
Masami Hiramatsu
405b2651e4 tracing/kprobes: Add $ prefix to special variables
Add $ prefix to the special variables(e.g. sa, rv) of kprobe-tracer.
This resolves consistency issues between kprobe_events and perf-kprobe.

The main goal is to avoid conflicts between local variable names of
probed functions, used by perf probe, and special variables used
in the kprobe event creation interface (stack values, etc...) and
also available from perf probe.

ie: we don't want rv (return value) to conflict with a local variable
named rv in a probed function.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Frank Ch. Eigler <fche@redhat.com>
LKML-Reference: <20091007222740.1684.91170.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2009-10-12 19:21:35 +02:00
Linus Torvalds
69585dd69e Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (34 commits)
  [SCSI] qla2xxx: Fix NULL ptr deref bug in fail path during queue create
  [SCSI] st: fix possible memory use after free after MTSETBLK ioctl
  [SCSI] be2iscsi: Moving to pci_pools v3
  [SCSI] libiscsi: iscsi_session_setup to allow for private space
  [SCSI] be2iscsi: add 10Gbps iSCSI - BladeEngine 2 driver
  [SCSI] zfcp: Fix hang when offlining device with offline chpid
  [SCSI] zfcp: Fix lockdep warning when offlining device with offline chpid
  [SCSI] zfcp: Fix oops during shutdown of offline device
  [SCSI] zfcp: Fix initial device and cfdc for delayed adapter allocation
  [SCSI] zfcp: correctly initialize unchained requests
  [SCSI] mpt2sas: Bump version 02.100.03.00
  [SCSI] mpt2sas: Support dev remove when phy status is MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT
  [SCSI] mpt2sas: Timeout occurred within the HANDSHAKE logic while waiting on firmware to ACK.
  [SCSI] mpt2sas: Call init_completion on a per request basis.
  [SCSI] mpt2sas: Target Reset will be issued from Interrupt context.
  [SCSI] mpt2sas: Added SCSIIO, Internal and high priority memory pools to support multiple TM
  [SCSI] mpt2sas: Copyright change to 2009.
  [SCSI] mpt2sas: Added mpi2_history.txt for MPI2 headers.
  [SCSI] mpt2sas: Update driver to MPI2 REV K headers.
  [SCSI] bfa: Brocade BFA FC SCSI driver
  ...
2009-10-11 11:12:33 -07:00
Linus Torvalds
bd381934bf Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  RDMA/addr: Fix resolution of local IPv6 addresses
  RDMA/cxgb3: Handle NULL inetdev pointer in iwch_query_port()
  mlx4_core: Add 40GigE device ID
  RDMA/iwcm: Don't call provider reject func with irqs disabled
  IB: Fix typo in udev rule documentation
2009-10-09 13:40:22 -07:00
Alok Kataria
d0153ca35d x86, vmi: Mark VMI deprecated and schedule it for removal
Add text in feature-removal.txt indicating that VMI will be removed in
the 2.6.37 timeframe.

Signed-off-by: Alok N Kataria <akataria@vmware.com>
Acked-by: Chris Wright <chrisw@sous-sol.org>
LKML-Reference: <1254193238.13456.48.camel@ank32.eng.vmware.com>
[ removed a bogus Kconfig change, marked (DEPRECATED) in Kconfig ]
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-08 22:27:55 +02:00
Linus Torvalds
5587481e92 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (40 commits)
  ethoc: limit the number of buffers to 128
  ethoc: use system memory as buffer
  ethoc: align received packet to make IP header at word boundary
  ethoc: fix buffer address mapping
  ethoc: fix typo to compute number of tx descriptors
  au1000_eth: Duplicate test of RX_OVERLEN bit in update_rx_stats()
  netxen: Fix Unlikely(x) > y
  pasemi_mac: ethtool get settings fix
  add maintainer for network drop monitor kernel service
  tg3: Fix phylib locking strategy
  rndis_host: support ETHTOOL_GPERMADDR
  ipv4: arp_notify address list bug
  gigaset: add kerneldoc comments
  gigaset: correct debugging output selection
  gigaset: improve error recovery
  gigaset: fix device ERROR response handling
  gigaset: announce if built with debugging
  gigaset: handle isoc frame errors more gracefully
  gigaset: linearize skb
  gigaset: fix reject/hangup handling
  ...
2009-10-08 11:59:30 -07:00
Wu Fengguang
a54fed9f70 page-types: add hwpoison/unpoison feature
For hwpoison stress testing.  The debugfs mount point is assumed to be
/debug/.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-08 07:36:39 -07:00
Wu Fengguang
48640d69f5 page-types: introduce kpageflags_flags()
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-08 07:36:39 -07:00
Wu Fengguang
e577ebde9f page-types: make voffset local variables
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-08 07:36:39 -07:00
Wu Fengguang
4a1b6726fe page-types: make standalone pagemap/kpageflags read routines
Refactor the code to be more modular and easier to reuse.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-08 07:36:39 -07:00
Wu Fengguang
31bbf66eaa page-types: introduce checked_open()
This helps merge duplicate code (now and future) and outstand the main
logic.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-08 07:36:39 -07:00
Wu Fengguang
0c57effe27 page-types: add GPL note
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-08 07:36:39 -07:00
Wu Fengguang
a1bbb5ec39 pagemap: document KPF_KSM and show it in page-types
It indicates to the system admin that processes mapping such pages may be
eating less physical memory than the reported numbers by legacy tools.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Izik Eidus <ieidus@redhat.com>
Acked-by: Chris Wright <chrisw@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-08 07:36:39 -07:00
Wu Fengguang
253fb02d62 pagemap: export KPF_HWPOISON
This flag indicates a hardware detected memory corruption on the page.
Any future access of the page data may bring down the machine.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-08 07:36:39 -07:00
Paul Menage
7823da36ce cgroups: update documentation of cgroups tasks and procs files
Update documentation of cgroups tasks and procs files

Document the cgroup.procs file.

Clarify the semantics of the cgroup.procs and tasks files.  Although the
current cgroup.procs interface returns a sorted and uniqified list of
pids, potential future performance enhancements could result in those
properties being removed - explicitly document this aspect of the API.

There are no existing users of cgroup.procs, so compatibility isn't an
issue.  There are users of the "tasks" file, but none that would appear to
break in the event of the sorted property being broken.  The standard
"libcpuset" explicitly sorts the results of reading from the tasks file,
and "libcg" and other users don't appear to care about ordering.

Signed-off-by: Paul Menage <menage@google.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-08 07:36:39 -07:00
Hugh Dickins
c73602ad31 ksm: more on default values
Adjust the max_kernel_pages default to a quarter of totalram_pages,
instead of nr_free_buffer_pages() / 4: the KSM pages themselves come from
highmem, and even on a 16GB PAE machine, 4GB of KSM pages would only be
pinning 32MB of lowmem with their rmap_items, so no need for the more
obscure calculation (nor for its own special init function).

There is no way for the user to switch KSM on if CONFIG_SYSFS is not
enabled, so in that case default run to KSM_RUN_MERGE.

Update KSM Documentation and Kconfig to reflect the new defaults.

Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Izik Eidus <ieidus@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-08 07:36:38 -07:00
Eric Dumazet
f86dcc5aa8 udp: dynamically size hash tables at boot time
UDP_HTABLE_SIZE was initialy defined to 128, which is a bit small for
several setups.

4000 active UDP sockets -> 32 sockets per chain in average. An
incoming frame has to lookup all sockets to find best match, so long
chains hurt latency.

Instead of a fixed size hash table that cant be perfect for every
needs, let UDP stack choose its table size at boot time like tcp/ip
route, using alloc_large_system_hash() helper

Add an optional boot parameter, uhash_entries=x so that an admin can
force a size between 256 and 65536 if needed, like thash_entries and
rhash_entries.

dmesg logs two new lines :
[    0.647039] UDP hash table entries: 512 (order: 0, 4096 bytes)
[    0.647099] UDP Lite hash table entries: 512 (order: 0, 4096 bytes)

Maximal size on 64bit arches would be 65536 slots, ie 1 MBytes for non
debugging spinlocks.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-07 22:00:22 -07:00
Bart Van Assche
aa07a99412 IB: Fix typo in udev rule documentation
The proper syntax for udev rules is KERNEL==... instead of KERNEL=...

Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>
Reported-by: Lukasz Jurewicz <lukasz.jurewicz@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-10-07 15:35:55 -07:00
Octavian Purdila
f7734fdf61 make TLLAO option for NA packets configurable
On Friday 02 October 2009 20:53:51 you wrote:

> This is good although I would have shortened the name.

Ah, I knew I forgot something :) Here is v4.

tavi

>From 24d96d825b9fa832b22878cc6c990d5711968734 Mon Sep 17 00:00:00 2001
From: Octavian Purdila <opurdila@ixiacom.com>
Date: Fri, 2 Oct 2009 00:51:15 +0300
Subject: [PATCH] ipv6: new sysctl for sending TLLAO with unicast NAs

Neighbor advertisements responding to unicast neighbor solicitations
did not include the target link-layer address option. This patch adds
a new sysctl option (disabled by default) which controls whether this
option should be sent even with unicast NAs.

The need for this arose because certain routers expect the TLLAO in
some situations even as a response to unicast NS packets.

Moreover, RFC 2461 recommends sending this to avoid a race condition
(section 4.4, Target link-layer address)

Signed-off-by: Cosmin Ratiu <cratiu@ixiacom.com>
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-07 01:10:45 -07:00
Jiri Pirko
a549952ad3 bonding: introduce primary_reselect option
In some cases there is not desirable to switch back to primary interface when
it's link recovers and rather stay with currently active one. We need to avoid
packetloss as much as we can in some cases. This is solved by introducing
primary_reselect option. Note that enslaved primary slave is set as current
active no matter what.

Patch modified by Jay Vosburgh as follows: fixed bug in action
after change of option setting via sysfs, revised the documentation
update, and bumped the bonding version number.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-07 01:07:39 -07:00
Tilman Schmidt
7bb5fdc2fb gigaset: add Kernel CAPI interface (v3)
Add a Kernel CAPI interface to the Gigaset driver.

Impact: optional new functionality
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06 22:43:53 -07:00
David S. Miller
7ecc59c1b7 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-06 22:43:16 -07:00
Tilman Schmidt
f1af9f5854 Documentation: expand isdn/INTERFACE.CAPI document
- Note that send_message() may be called in interrupt context.
- Describe the storage of CAPI messages and payload data in SKBs.
- Add more details to the description of the _cmsg structure.
- Describe kernelcapi debugging output.

Impact: documentation
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06 22:20:51 -07:00
Linus Torvalds
46302b46e5 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Don't leak 64-bit kernel register values to 32-bit processes
  x86, SLUB: Remove unused CONFIG FAST_CMPXCHG_LOCAL
  x86: earlyprintk: Fix regression to handle serial,ttySn as 1 arg
  x86: Don't generate cmpxchg8b_emu if CONFIG_X86_CMPXCHG64=y
  x86: Fix csum_ipv6_magic asm memory clobber
  x86: Optimize cmpxchg64() at build-time some more
2009-10-05 12:02:18 -07:00
Krzysztof Helt
1cb0fdebae ALSA: sscape: force AD1848 codec mode on old Soundscape
Old Soundscape cards (pre PnP) work only with AD1848 codecs.
If the CS4231 codec is installed it must be used in AD1848
compatible mode.

Also, add gameport support and remove an unused mpu field.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-10-05 18:21:33 +02:00
Jens Axboe
5d13379a4d Merge branch 'master' into for-2.6.33 2009-10-05 09:30:10 +02:00
Eric Dumazet
896a7cf8d8 pktgen: Fix multiqueue handling
It is not currently possible to instruct pktgen to use one selected tx queue.

When Robert added multiqueue support in commit 45b270f8, he added
an interval (queue_map_min, queue_map_max), and his code doesnt take
into account the case of min = max, to select one tx queue exactly.

I suspect a high performance setup on a eight txqueue device wants
to use exactly eight cpus, and assign one tx queue to each sender.

This patchs makes pktgen select the right tx queue, not the first one.

Also updates Documentation to reflect Robert changes.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-04 21:08:54 -07:00
Linus Torvalds
663cc813a8 Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  macintosh: Don't assume i2c device probing always succeeds
  i2c: Hide probe errors caused by ACPI resource conflicts
  i2c: Minor documentation update
  mfd: AB3100 drop unused module parameters
  Staging: IIO: tsl2561: Drop unused module parameters
  leds: leds-pca9532 - Drop unused module parameters
  ltc4215/ltc4245: Discard obsolete detect methods
  ds2482: Discard obsolete detect method
  max6875: Discard obsolete detect method
  i2c: Move misc devices documentation
2009-10-04 14:59:14 -07:00
Jean Delvare
03f1805ad0 i2c: Minor documentation update
The sysfs path to i2c adapters has changed recently, update the
documentation to reflect that change.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-10-04 22:53:45 +02:00
Jean Delvare
2d2a7cff1b ltc4215/ltc4245: Discard obsolete detect methods
There is no point in implementing a detect callback for the LTC4215
and LTC4245, as these devices can't be detected. It was there solely
to handle "force" module parameters to instantiate devices, but now
we have a better sysfs interface that can do the same.

So we can get rid of the ugly module parameters and the detect
callbacks. This shrinks the binary module sizes by 36% and 46%,
respectively.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Ira W. Snyder <iws@ovro.caltech.edu>
2009-10-04 22:53:42 +02:00
Jean Delvare
0314b020c4 ds2482: Discard obsolete detect method
There is no point in implementing a detect callback for the DS2482, as
this device can't be detected. It was there solely to handle "force"
module parameters to instantiate devices, but now we have a better sysfs
interface that can do the same.

So we can get rid of the ugly module parameters and the detect callback.
This shrinks the binary module size by 21%.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Ben Gardner <gardner.ben@gmail.com>
2009-10-04 22:53:41 +02:00
Jean Delvare
b835d7fbd5 max6875: Discard obsolete detect method
There is no point in implementing a detect callback for the MAX6875, as
this device can't be detected. It was there solely to handle "force"
module parameters to instantiate devices, but now we have a better sysfs
interface that can do the same.

So we can get rid of the ugly module parameters and the detect callback.
This basically divides the binary module size by 2.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Ben Gardner <gardner.ben@gmail.com>
2009-10-04 22:53:41 +02:00
Jean Delvare
f546c65cd5 i2c: Move misc devices documentation
Some times ago the eeprom and max6875 drivers moved to
drivers/misc/eeprom, but their documentation did not follow. It's
finally time to get rid of Documentation/i2c/chips.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Ben Gardner <gardner.ben@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2009-10-04 22:53:40 +02:00
Linus Torvalds
58e57fbd1c Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (41 commits)
  Revert "Seperate read and write statistics of in_flight requests"
  cfq-iosched: don't delay async queue if it hasn't dispatched at all
  block: Topology ioctls
  cfq-iosched: use assigned slice sync value, not default
  cfq-iosched: rename 'desktop' sysfs entry to 'low_latency'
  cfq-iosched: implement slower async initiate and queue ramp up
  cfq-iosched: delay async IO dispatch, if sync IO was just done
  cfq-iosched: add a knob for desktop interactiveness
  Add a tracepoint for block request remapping
  block: allow large discard requests
  block: use normal I/O path for discard requests
  swapfile: avoid NULL pointer dereference in swapon when s_bdev is NULL
  fs/bio.c: move EXPORT* macros to line after function
  Add missing blk_trace_remove_sysfs to be in pair with blk_trace_init_sysfs
  cciss: fix build when !PROC_FS
  block: Do not clamp max_hw_sectors for stacking devices
  block: Set max_sectors correctly for stacking devices
  cciss: cciss_host_attr_groups should be const
  cciss: Dynamically allocate the drive_info_struct for each logical drive.
  cciss: Add usage_count attribute to each logical drive in /sys
  ...
2009-10-04 12:39:14 -07:00
Andi Kleen
f58ee00f15 HWPOISON: Add brief hwpoison description to Documentation
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2009-10-04 03:23:26 +02:00
Linus Torvalds
f0a221ef47 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of ssh://master.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (21 commits)
  ALSA: usb - Use strlcat() correctly
  ALSA: Fix invalid __exit in sound/mips/*.c
  ALSA: hda - Fix / improve ALC66x parser
  ALSA: ctxfi: Swapped SURROUND-SIDE mute
  sound: Make keywest_driver static
  ALSA: intel8x0 - Mute External Amplifier by default for Sony VAIO VGN-B1VP
  ALSA: hda - Fix digita/analog mic auto-switching with IDT codecs
  ASoC: fix kconfig order of Blackfin drivers
  ALSA: hda - Added quirk to enable sound on Toshiba NB200
  ASoC: Fix dependency of CONFIG_SND_PXA2XX_SOC_IMOTE2
  ALSA: Don't assume i2c device probing always succeeds
  ALSA: intel8x0 - Mute External Amplifier by default for Sony VAIO VGN-T350P
  ALSA: echoaudio - Re-enable the line-out control for the Mia card
  ALSA: hda - Resurrect input-source mixer of ALC268 model=acer
  ALSA: hda - Analog Devices AD1984A add HP Touchsmart model
  ALSA: hda - Add HP Pavilion dv4t-1300 to MSI whitelist
  ALSA: hda - CD-audio sound for hda-intel conexant benq laptop
  ASoC: DaVinci: Correct McASP FIFO initialization
  ASoC: Davinci: Fix race with cpu_dai->dma_data
  ASoC: DaVinci: Fix divide by zero error during 1st execution
  ...
2009-10-03 11:25:30 -07:00
Takashi Iwai
7fa9742bf7 Merge branch 'fix/hda' into for-linus 2009-10-03 18:31:33 +02:00
Justin P. Mattock
211a641770 ieee1394: update URLs in debugging-via-ohci1394.txt
Update URLs of the userspace tools to use ohci1394_dma=early for
debugging.

Seems the address ftp://ftp.suse.de/private/bk/firewire/tools/* is not
very helpful.  After a quick search, seems this was talked about:
http://www.mail-archive.com/kgdb-bugreport@lists.sourceforge.net/msg02761.html
(can't find the original thread).

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2009-10-03 09:28:11 +02:00
Linus Torvalds
a037a79dce Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: (25 commits)
  ARM: 5728/1: Proper prefetch abort handling on ARMv6 and ARMv7
  ARM: 5727/1: Pass IFSR register to do_PrefetchAbort()
  ARM: 5740/1: fix valid_phys_addr_range() range check
  ARM: 5739/1: ARM: allow empty ATAG_CORE
  ARM: 5735/1: sa1111: CodingStyle cleanups
  ARM: 5738/1: Correct TCM documentation
  ARM: 5734/1: arm: fix compilation of entry-common.S for older CPUs
  ARM: 5733/1: fix bcmring compile error
  ARM: 5732/1: remove redundant include file
  ARM: 5731/2: Fix U300 generic GPIO, remove ifdefs from MMCI v3
  ARM: Ensure do_cache_op takes mmap_sem
  ARM: Fix __cpuexit section mismatch warnings
  ARM: Don't allow highmem on SMP platforms without h/w TLB ops broadcast
  ARM: includecheck fix: mach-davinci, board-dm365-evm.c
  ARM: Remove unused CONFIG SA1100_H3XXX
  ARM: Fix warning: unused variable 'highmem'
  ARM: Fix warning: #warning syscall migrate_pages not implemented
  ARM: Fix SA11x0 clocksource warning
  ARM: Fix SA1100 Neponset serial section mismatch
  ARM: Fix SA1100 Assabet/Neponset PCMCIA section mismatch warnings
  ...
2009-10-02 16:20:43 -07:00
Linus Torvalds
90d5ffc729 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (46 commits)
  cnic: Fix NETDEV_UP event processing.
  uvesafb/connector: Disallow unpliviged users to send netlink packets
  pohmelfs/connector: Disallow unpliviged users to configure pohmelfs
  dst/connector: Disallow unpliviged users to configure dst
  dm/connector: Only process connector packages from privileged processes
  connector: Removed the destruct_data callback since it is always kfree_skb()
  connector/dm: Fixed a compilation warning
  connector: Provide the sender's credentials to the callback
  connector: Keep the skb in cn_callback_data
  e1000e/igb/ixgbe: Don't report an error if devices don't support AER
  net: Fix wrong sizeof
  net: splice() from tcp to pipe should take into account O_NONBLOCK
  net: Use sk_mark for routing lookup in more places
  sky2: irqname based on pci address
  skge: use unique IRQ name
  IPv4 TCP fails to send window scale option when window scale is zero
  net/ipv4/tcp.c: fix min() type mismatch warning
  Kconfig: STRIP: Remove stale bits of STRIP help text
  NET: mkiss: Fix typo
  tg3: Remove prev_vlan_tag from struct tx_ring_info
  ...
2009-10-02 13:37:18 -07:00
Philipp Reisner
7069331dbe connector: Provide the sender's credentials to the callback
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Acked-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-02 10:54:01 -07:00
Jean Delvare
b607bd9000 net: Fix wrong sizeof
Which is why I have always preferred sizeof(struct foo) over
sizeof(var).

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-02 09:55:19 -07:00
HighPoint Linux Team
3bfc13c239 [SCSI] hptiop: Add RR44xx adapter support
Most code changes were made to support RR44xx adapters.
- add more PCI device ID.
- using PCI BAR[2] to access RR44xx IOP.
- using PCI BAR[0] to check and clear RR44xx IRQ.

Signed-off-by: HighPoint Linux Team <linux@highpoint-tech.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-10-02 09:45:22 -05:00
Randy Dunlap
4932be7789 docs: update patch size in SubmittingPatches
This patch size comment is like so last millenium.  Update it to modern
times.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-01 16:11:12 -07:00
Philipp Reisner
b411b3637f The DRBD driver
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2009-10-01 21:17:49 +02:00
Stephen M. Cameron
e272afecaf cciss: Add usage_count attribute to each logical drive in /sys
Add usage_count attribute to each logical drive at
/sys/devices/<dev>/ccissX/cXdY/usage_count for controller X,
logical drive Y.  The usage count is the number of times
the device has currently been opened.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-10-01 21:15:44 +02:00
Stephen M. Cameron
3ff1111dc6 cciss: Add a "raid_level" attribute to each logical drive in /sys
and change get rid of some magic numbers in raid lavel decoding.

Add raid_level attribute to each logical drive at
/sys/devices/<dev>/ccissX/cXdY/raid_level for controller X,
logical drive Y

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-10-01 21:15:44 +02:00
Stephen M. Cameron
ce84a8aeac cciss: Add lunid attribute to each logical drive in /sys
Add lunid attribute to each logical drive at
/sys/devices/<dev>/ccissX/cXdY/lunid for controller X,
logical drive Y

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-10-01 21:15:44 +02:00
Andrew Patterson
d6f4965d7d cciss: Allow triggering of rescan of logical drive topology via sysfs entry
Added /sys/bus/pci/devices/<dev>/ccissX/rescan sysfs entry used
to kick off a rescan that discovers logical drive topology changes.

Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-10-01 21:15:41 +02:00
Linus Walleij
610ea6c671 ARM: 5738/1: Correct TCM documentation
It turns out that the TCM memory can be remap:ed by the MMU just
like any other memory.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-01 16:26:16 +01:00
Jason Wessel
ea3acb199a x86: earlyprintk: Fix regression to handle serial,ttySn as 1 arg
Commit c953094 ("early_printk: Allow more than one early console")
introduced a regression in the parsing of the earlyprintk= kernel
arguments.

If you specify "earlyprintk=serial,ttyS0,115200" as a kernel
argument, the "serial,ttyS" should be parsed as a single argument
and not as "serial" and then "ttyS".

Also update the documentation to reflect you can specify the ttyS
directly without the "serial" argument.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <gregkh@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
LKML-Reference: <4ABB7D5E.6000301@windriver.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-01 10:34:16 +02:00
Krzysztof Helt
acd4710091 ALSA: sscape: convert to firmware loader framework
The conversion solves the problem that firmware size was set to 64KB
while non PnP cards have 128KB firmware files.

An additional firmware initialization code has been moved from the OSS
driver.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-10-01 07:51:56 +02:00
Linus Torvalds
9f44fdc518 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: Fix time encoding with extra epoch bits
  ext4: Add a stub for mpage_da_data in the trace header
  jbd2: Use tracepoints for history file
  ext4: Use tracepoints for mb_history trace file
  ext4, jbd2: Drop unneeded printks at mount and unmount time
  ext4: Handle nested ext4_journal_start/stop calls without a journal
  ext4: Make sure ext4_dirty_inode() updates the inode in no journal mode
  ext4: Avoid updating the inode table bh twice in no journal mode
  ext4: EXT4_IOC_MOVE_EXT: Check for different original and donor inodes first
  ext4: async direct IO for holes and fallocate support
  ext4: Use end_io callback to avoid direct I/O fallback to buffered I/O
  ext4: Split uninitialized extents for direct I/O
  ext4: release reserved quota when block reservation for delalloc retry
  ext4: Adjust ext4_da_writepages() to write out larger contiguous chunks
  ext4: Fix hueristic which avoids group preallocation for closed files
  ext4: Use ext4_msg() for ext4_da_writepage() errors
  ext4: Update documentation about quota mount options
2009-09-30 09:32:30 -07:00
Linus Torvalds
4c8f1cb266 Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6:
  fat: Check s_dirt in fat_sync_fs()
  vfat: change the default from shortname=lower to shortname=mixed
  fat/nls: Fix handling of utf8 invalid char
2009-09-30 09:31:14 -07:00
Theodore Ts'o
296c355cd6 ext4: Use tracepoints for mb_history trace file
The /proc/fs/ext4/<dev>/mb_history was maintained manually, and had a
number of problems: it required a largish amount of memory to be
allocated for each ext4 filesystem, and the s_mb_history_lock
introduced a CPU contention problem.  

By ripping out the mb_history code and replacing it with ftrace
tracepoints, and we get more functionality: timestamps, event
filtering, the ability to correlate mballoc history with other ext4
tracepoints, etc.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-30 00:32:42 -04:00
Miguel de Barros
a72cb4bc85 ALSA: hda - Analog Devices AD1984A add HP Touchsmart model
Reference: ALSA bug #0004614
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4614

port-A (0x11)      - front hp-out
port-D (0x12)      - rear line out
port-E (0x1c)      - front mic-in
port-F (0x16)      - Internal speakers
digital-mic (0x17) - Internal mic

init verbs, mixers, jack sensing and PCI_QUIRK to support this hardware

Signed-off-by: Miguel de Barros <miguel.de.barros@bluewin.ch>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-09-29 09:15:05 +02:00
Andy Adamson
ddc04fd4d5 nfsd41: use sv_max_mesg for forechannel max sizes
ca_maxresponsesize and ca_maxrequest size include the RPC header.

sv_max_mesg is sv_max_payolad plus a page for overhead and is used in
svc_init_buffer to allocate server buffer space for both the request and reply.
Note that this means we can service an RPC compound that requires
ca_maxrequestsize (MAXWRITE) or ca_max_responsesize (MAXREAD) but that we do
not support an RPC compound that requires both ca_maxrequestsize and
ca_maxresponsesize.

Signed-off-by: Andy Adamson <andros@netapp.com>
[bfields@citi.umich.edu: more documentation updates]
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-28 12:40:15 -04:00
J. Bruce Fields
03d6a74b5f nfsd: fix Documentation typo
Caught by Benny, thanks!

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-09-28 12:07:52 -04:00
Jan Kara
8365388827 ext4: Update documentation about quota mount options
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-29 15:59:34 -04:00
Len Brown
2b474ad847 Merge branch 'thinkpad-2.6.32-part2' into release 2009-09-26 01:08:55 -04:00
Russell King
baea7b946f Merge branch 'origin' into for-linus
Conflicts:
	MAINTAINERS
2009-09-24 21:22:33 +01:00
Linus Torvalds
6c5daf012c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  truncate: use new helpers
  truncate: new helpers
  fs: fix overflow in sys_mount() for in-kernel calls
  fs: Make unload_nls() NULL pointer safe
  freeze_bdev: grab active reference to frozen superblocks
  freeze_bdev: kill bd_mount_sem
  exofs: remove BKL from super operations
  fs/romfs: correct error-handling code
  vfs: seq_file: add helpers for data filling
  vfs: remove redundant position check in do_sendfile
  vfs: change sb->s_maxbytes to a loff_t
  vfs: explicitly cast s_maxbytes in fiemap_check_ranges
  libfs: return error code on failed attr set
  seq_file: return a negative error code when seq_path_root() fails.
  vfs: optimize touch_time() too
  vfs: optimization for touch_atime()
  vfs: split generic_forget_inode() so that hugetlbfs does not have to copy it
  fs/inode.c: add dev-id and inode number for debugging in init_special_inode()
  libfs: make simple_read_from_buffer conventional
2009-09-24 08:32:11 -07:00
Linus Torvalds
a487b6705a Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md: (97 commits)
  md: raid-1/10: fix RW bits manipulation
  md: remove unnecessary memset from multipath.
  md: report device as congested when suspended
  md: Improve name of threads created by md_register_thread
  md: remove sparse warnings about lock context.
  md: remove sparse waring "symbol xxx shadows an earlier one"
  async_tx/raid6: add missing dma_unmap calls to the async fail case
  ioat3: fix uninitialized var warnings
  drivers/dma/ioat/dma_v2.c: fix warnings
  raid6test: fix stack overflow
  ioat2: clarify ring size limits
  md/raid6: cleanup ops_run_compute6_2
  md/raid6: eliminate BUG_ON with side effect
  dca: module load should not be an error message
  ioat: driver version 4.0
  dca: registering requesters in multiple dca domains
  async_tx: remove HIGHMEM64G restriction
  dmaengine: sh: Add Support SuperH DMA Engine driver
  dmaengine: Move all map_sg/unmap_sg for slave channel to its client
  fsldma: Add DMA_SLAVE support
  ...
2009-09-24 07:55:29 -07:00
Linus Torvalds
db16826367 Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6
* 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6: (21 commits)
  HWPOISON: Enable error_remove_page on btrfs
  HWPOISON: Add simple debugfs interface to inject hwpoison on arbitary PFNs
  HWPOISON: Add madvise() based injector for hardware poisoned pages v4
  HWPOISON: Enable error_remove_page for NFS
  HWPOISON: Enable .remove_error_page for migration aware file systems
  HWPOISON: The high level memory error handler in the VM v7
  HWPOISON: Add PR_MCE_KILL prctl to control early kill behaviour per process
  HWPOISON: shmem: call set_page_dirty() with locked page
  HWPOISON: Define a new error_remove_page address space op for async truncation
  HWPOISON: Add invalidate_inode_page
  HWPOISON: Refactor truncate to allow direct truncating of page v2
  HWPOISON: check and isolate corrupted free pages v2
  HWPOISON: Handle hardware poisoned pages in try_to_unmap
  HWPOISON: Use bitmask/action code for try_to_unmap behaviour
  HWPOISON: x86: Add VM_FAULT_HWPOISON handling to x86 page fault handler v2
  HWPOISON: Add poison check to page fault handling
  HWPOISON: Add basic support for poisoned pages in fault handler v3
  HWPOISON: Add new SIGBUS error codes for hardware poison signals
  HWPOISON: Add support for poison swap entries v2
  HWPOISON: Export some rmap vma locking to outside world
  ...
2009-09-24 07:53:22 -07:00
Dimitri Sivanich
fbd8ae1068 drivers/char/uv_mmtimer.c: add memory mapped RTC driver for UV
This driver memory maps the UV Hub RTC.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:21:03 -07:00
Neil Horman
a293980c2e exec: let do_coredump() limit the number of concurrent dumps to pipes
Introduce core pipe limiting sysctl.

Since we can dump cores to pipe, rather than directly to the filesystem,
we create a condition in which a user can create a very high load on the
system simply by running bad applications.

If the pipe reader specified in core_pattern is poorly written, we can
have lots of ourstandig resources and processes in the system.

This sysctl introduces an ability to limit that resource consumption.
core_pipe_limit defines how many in-flight dumps may be run in parallel,
dumps beyond this value are skipped and a note is made in the kernel log.
A special value of 0 in core_pipe_limit denotes unlimited core dumps may
be handled (this is the default value).

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Earl Chew <earl_chew@agilent.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:21:00 -07:00
Balbir Singh
a6df63615b memory controller: soft limit documentation
Soft limits is a new feature for the memory resource controller, something
similar has existed in the group scheduler in the form of shares.  The CPU
controllers interpretation of shares is very different though.

Soft limits are the most useful feature to have for environments where the
administrator wants to overcommit the system, such that only on memory
contention do the limits become active.  The current soft limits
implementation provides a soft_limit_in_bytes interface for the memory
controller and not for memory+swap controller.  The implementation
maintains an RB-Tree of groups that exceed their soft limit and starts
reclaiming from the group that exceeds this limit by the maximum amount.

This patch:

Add documentation for soft limits

Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:20:59 -07:00
Balbir Singh
4b3bde4c98 memcg: remove the overhead associated with the root cgroup
Change the memory cgroup to remove the overhead associated with accounting
all pages in the root cgroup.  As a side-effect, we can no longer set a
memory hard limit in the root cgroup.

A new flag to track whether the page has been accounted or not has been
added as well.  Flags are now set atomically for page_cgroup,
pcg_default_flags is now obsolete and removed.

[akpm@linux-foundation.org: fix a few documentation glitches]
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:20:58 -07:00
Ben Blum
be367d0992 cgroups: let ss->can_attach and ss->attach do whole threadgroups at a time
Alter the ss->can_attach and ss->attach functions to be able to deal with
a whole threadgroup at a time, for use in cgroup_attach_proc.  (This is a
pre-patch to cgroup-procs-writable.patch.)

Currently, new mode of the attach function can only tell the subsystem
about the old cgroup of the threadgroup leader.  No subsystem currently
needs that information for each thread that's being moved, but if one were
to be added (for example, one that counts tasks within a group) this bit
would need to be reworked a bit to tell the subsystem the right
information.

[hidave.darkstar@gmail.com: fix build]
Signed-off-by: Ben Blum <bblum@google.com>
Signed-off-by: Paul Menage <menage@google.com>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
Reviewed-by: Matt Helsley <matthltc@us.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:20:58 -07:00
Paul Menage
c6d57f3312 cgroups: support named cgroups hierarchies
To simplify referring to cgroup hierarchies in mount statements, and to
allow disambiguation in the presence of empty hierarchies and
multiply-bindable subsystems this patch adds support for naming a new
cgroup hierarchy via the "name=" mount option

A pre-existing hierarchy may be specified by either name or by subsystems;
a hierarchy's name cannot be changed by a remount operation.

Example usage:

# To create a hierarchy called "foo" containing the "cpu" subsystem
mount -t cgroup -oname=foo,cpu cgroup /mnt/cgroup1

# To mount the "foo" hierarchy on a second location
mount -t cgroup -oname=foo cgroup /mnt/cgroup2

Signed-off-by: Paul Menage <menage@google.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:20:57 -07:00
Wu Fengguang
0b4b2ad530 page-types: add feature for walking process address space
Introduce "-p|--pid <pid>" for walking the process address space.  The
default action is to walk raw memory PFNs.

Both the virtual address and physical address of each present pages will
be listed:

	# ./tools/vm/page-types -lp $$ | head -3
	voffset offset  len     flags
	400     11bebe  1       __RU_lA____M______________________
	402     11bebc  1       __RU_lA____M______________________

Note that voffset/offset/len are now showed as hex numbers.

[akpm@linux-foundation.org: coding-style fixes]
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:20:57 -07:00
Josh Triplett
ba36c440ba Documentation/vm/.gitignore: add page-types
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:20:57 -07:00
Jaswinder Singh Rajput
2552a99b6e includecheck fix: Documentation, cfag12864b-example.c
fix the following 'make includecheck' warning:

  Documentation/auxdisplay/cfag12864b-example.c: string.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:20:57 -07:00
Xiaotian Feng
bcadbbd4c8 Documentation: update stale definition of file-nr in fs.txt
In "documentation: update Documentation/filesystem/proc.txt and
Documentation/sysctls" (commit 760df93ec) we merged /proc/sys/fs
documentation in Documentation/sysctl/fs.txt and
Documentation/filesystem/proc.txt, but stale file-nr definition
remained.

This patch adds back the right fs-nr definition for 2.6 kernel.

Signed-off-by: Xiaotian Feng<dfeng@redhat.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:20:57 -07:00
Peng Tao
16c01b20ae doc/filesystems: more mount cleanups
Documentation/filesystems/sharedsubtree.txt needs updating because the
mount command in util-linux package is well aware of shared subtree
features now.  The patch also fixes two typos in sharedsubtree.txt.

Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:20:57 -07:00
Randy Dunlap
0288b95b43 doc/filesystems: remove smount program
mount(8) handles shared subtrees just fine, so remove the smount program
from Documentation/filesystems/sharedsubtree.txt.

Fix annoying "Lets" -> "Let's".
Insert space between '#' prompt and "mount" command.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Miklos Szeredi <miklos@szeredi.hu>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:20:57 -07:00
npiggin@suse.de
25d9e2d152 truncate: new helpers
Introduce new truncate helpers truncate_pagecache and inode_newsize_ok.
vmtruncate is also consolidated from mm/memory.c and mm/nommu.c and
into mm/truncate.c.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-09-24 08:41:47 -04:00
Linus Torvalds
c37efa9325 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next: (30 commits)
  Use macros for .data.page_aligned section.
  Use macros for .bss.page_aligned section.
  Use new __init_task_data macro in arch init_task.c files.
  kbuild: Don't define ALIGN and ENTRY when preprocessing linker scripts.
  arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0
  kbuild: add static to prototypes
  kbuild: fail build if recordmcount.pl fails
  kbuild: set -fconserve-stack option for gcc 4.5
  kbuild: echo the record_mcount command
  gconfig: disable "typeahead find" search in treeviews
  kbuild: fix cc1 options check to ensure we do not use -fPIC when compiling
  checkincludes.pl: add option to remove duplicates in place
  markup_oops: use modinfo to avoid confusion with underscored module names
  checkincludes.pl: provide usage helper
  checkincludes.pl: close file as soon as we're done with it
  ctags: usability fix
  kernel hacking: move STRIP_ASM_SYMS from General
  gitignore usr/initramfs_data.cpio.bz2 and usr/initramfs_data.cpio.lzma
  kbuild: Check if linker supports the -X option
  kbuild: introduce ld-option
  ...

Fix trivial conflict in scripts/basic/fixdep.c
2009-09-23 15:37:02 -07:00
Linus Torvalds
a7ddbf891b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  9p: Update documentation to add fscache related bits
  9p: Add fscache support to 9p
  9p: Fix the incorrect update of inode size in v9fs_file_write()
  9p: Use the i_size_[read, write]() macros instead of using inode->i_size directly.
2009-09-23 15:21:54 -07:00
Linus Torvalds
3e56d49390 Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (ltc4245) Clear faults at startup
  hwmon: (ltc4215) Clear faults at startup
  hwmon: (coretemp) Add Lynnfield CPU
  hwmon: (coretemp) Add support for Penryn mobile CPUs
  hwmon: (coretemp) Fix Atom CPUs support
  hwmon: Delete deprecated FSC drivers
  hwmon: (adm1031) Add sysfs files for temperature offsets
2009-09-23 15:20:16 -07:00
Frederic Weisbecker
d7a4b414ee Merge commit 'linus/master' into tracing/kprobes
Conflicts:
	kernel/trace/Makefile
	kernel/trace/trace.h
	kernel/trace/trace_event_types.h
	kernel/trace/trace_export.c

Merge reason:
	Sync with latest significant tracing core changes.
2009-09-23 23:08:43 +02:00
Huaxu Wan
fa08acd7d1 hwmon: (coretemp) Add Lynnfield CPU
Add Lynnfield processor support. Lynnfield is a quad-core Nehalem
based microprocessor for Desktop market, which is introduced in
September 2009.

Signed-off-by: Huaxu Wan <huaxu.wan@linux.intel.com>
Signed-off-by: Kent Liu <kent.liu@linux.intel.com>
Acked-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-09-23 22:59:43 +02:00
Rudolf Marek
eccfed4221 hwmon: (coretemp) Add support for Penryn mobile CPUs
Following patch adds support for mobile Penryn CPUs. Intel documents this
poorly. I asked the Coretemp author for some help. This is totally untested and
may not work. Please test!

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@linux.intel.com>
Cc: Kent Liu <kent.liu@linux.intel.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-09-23 22:59:42 +02:00
Rudolf Marek
708a62bcd5 hwmon: (coretemp) Fix Atom CPUs support
Fix Atom CPUs support. Intel documents TjMax at 90 degrees C but
some Atoms may have 125 degrees C (this is undocumented speculation).

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Cc: Huaxu Wan <huaxu.wan@linux.intel.com>
Cc: Kent Liu <kent.liu@linux.intel.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-09-23 22:59:42 +02:00
Jean Delvare
91f17e02a2 hwmon: Delete deprecated FSC drivers
The legacy fscpos and fscher drivers have been replaced by the unified
fschmd driver. The transition period is over now, we can delete them.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
2009-09-23 22:59:42 +02:00
Abhishek Kulkarni
f4edeeb393 9p: Update documentation to add fscache related bits
Update the documentation to describe FS-Cache related
caching parameters. This patch also updates the pointers
to 9p-related papers and adds pointer to the Wiki.

Signed-off-by: Abhishek Kulkarni <adkulkar@umail.iu.edu>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2009-09-23 13:03:46 -05:00
Linus Torvalds
433c24ed7f Merge git://git.infradead.org/battery-2.6
* git://git.infradead.org/battery-2.6:
  power_supply: Add driver for the PMU on WM831x PMICs
  ds2760_battery: Fix integer overflow for time_to_empty_now
  wm97xx_battery: Convert to dev_pm_ops
  wm97xx_battery: Use irq to detect charger state
  wm97xx_battery: Use platform_data
  wm97xx-core: Pass platform_data to battery
  ds2760_battery: implement set_charged() feature
  power_supply: get_by_name and set_charged functionality
  power_supply: EXPORT_SYMBOL cleanups
  ds2760_battery: add current_accum module parameter
  ds2760_battery: handle full_active_uAh == 0 case correctly
  ds2760_battery: add rated_capacity module parameter
  ds2760_battery: export more features
  ds2760_battery: delay power supply registration
  wm8350_power: Implement charge type property
  power_supply: Add a charge_type property, and use it for olpc driver
  olpc_battery: Add an 'error' sysfs device that displays raw errors
  Revert "power: remove POWER_SUPPLY_PROP_CAPACITY_LEVEL"
2009-09-23 10:11:08 -07:00
Linus Torvalds
a7c367b95a Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (58 commits)
  mtd: jedec_probe: add PSD4256G6V id
  mtd: OneNand support for Nomadik 8815 SoC (on NHK8815 board)
  mtd: nand: driver for Nomadik 8815 SoC (on NHK8815 board)
  m25p80: Add Spansion S25FL129P serial flashes
  jffs2: Use SLAB_HWCACHE_ALIGN for jffs2_raw_{dirent,inode} slabs
  mtd: sh_flctl: register sh_flctl using platform_driver_probe()
  mtd: nand: txx9ndfmc: transfer 512 byte at a time if possible
  mtd: nand: fix tmio_nand ecc correction
  mtd: nand: add __nand_correct_data helper function
  mtd: cfi_cmdset_0002: add 0xFF intolerance for M29W128G
  mtd: inftl: fix fold chain block number
  mtd: jedec: fix compilation problem with I28F640C3B definition
  mtd: nand: fix ECC Correction bug for SMC ordering for NDFC driver
  mtd: ofpart: Check availability of reg property instead of name property
  driver/Makefile: Initialize "mtd" and "spi" before "net"
  mtd: omap: adding DMA mode support in nand prefetch/post-write
  mtd: omap: add support for nand prefetch-read and post-write
  mtd: add nand support for w90p910 (v2)
  mtd: maps: add mtd-ram support to physmap_of
  mtd: pxa3xx_nand: add single-bit error corrections reporting
  ...
2009-09-23 10:07:49 -07:00
Linus Torvalds
b09a75fc5e Merge git://git.infradead.org/iommu-2.6
* git://git.infradead.org/iommu-2.6: (23 commits)
  intel-iommu: Disable PMRs after we enable translation, not before
  intel-iommu: Kill DMAR_BROKEN_GFX_WA option.
  intel-iommu: Fix integer wrap on 32 bit kernels
  intel-iommu: Fix integer overflow in dma_pte_{clear_range,free_pagetable}()
  intel-iommu: Limit DOMAIN_MAX_PFN to fit in an 'unsigned long'
  intel-iommu: Fix kernel hang if interrupt remapping disabled in BIOS
  intel-iommu: Disallow interrupt remapping if not all ioapics covered
  intel-iommu: include linux/dmi.h to use dmi_ routines
  pci/dmar: correct off-by-one error in dmar_fault()
  intel-iommu: Cope with yet another BIOS screwup causing crashes
  intel-iommu: iommu init error path bug fixes
  intel-iommu: Mark functions with __init
  USB: Work around BIOS bugs by quiescing USB controllers earlier
  ia64: IOMMU passthrough mode shouldn't trigger swiotlb init
  intel-iommu: make domain_add_dev_info() call domain_context_mapping()
  intel-iommu: Unify hardware and software passthrough support
  intel-iommu: Cope with broken HP DC7900 BIOS
  iommu=pt is a valid early param
  intel-iommu: double kfree()
  intel-iommu: Kill pointless intel_unmap_single() function
  ...

Fixed up trivial include lines conflict in drivers/pci/intel-iommu.c
2009-09-23 10:06:10 -07:00
Linus Torvalds
fd8b327ee4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6: (41 commits)
  regulator: Add some brief design documentation
  regulator: fix voltage range in da9034 ldo12
  regulator/driver: be more specific in nanodoc for is_enabled
  regulator/lp3971: drop unnecessary initialization
  regulator: drop 'default n'
  regulator: fix typos
  regulator: fix calculation of voltage range in da9034_set_ldo12_voltage()
  regulator: update a filename in documentation
  drivers/regulator/Kconfig: fix typo (s/Usersapce/Userspace/) in REGULATOR_USERSPACE_CONSUMER description
  REGULATOR Handle positive returncode from enable
  regulator: tps650xx - build fixes for x86_64
  Fix some regulator documentation
  Regulator: Adding TPS65023 and TPS6507x in Kconfig and Makefile
  Regulator: Add TPS6507x regulator driver
  Regulator: Add TPS65023 regulator driver
  regulator: userspace: use sysfs_create_group
  regulator: Add GPIO enable control to fixed voltage regulator driver
  Regulator: Implement list_voltage for pcf50633 regulator driver.
  regulator: regulator_enable() permission checking
  regulator: Push locking for regulator_is_enabled() out
  ...
2009-09-23 10:04:37 -07:00
Linus Torvalds
c11f6c8258 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (119 commits)
  ACPI: don't pass handle for fixed hardware notifications
  ACPI: remove null pointer checks in deferred execution path
  ACPI: simplify deferred execution path
  acerhdf: additional BIOS versions
  acerhdf: convert to dev_pm_ops
  acerhdf: fix fan control for AOA150 model
  thermal: add missing Kconfig dependency
  acpi: switch /proc/acpi/{debug_layer,debug_level} to seq_file
  hp-wmi: fix rfkill memory leak on unload
  ACPI: remove unnecessary #ifdef CONFIG_DMI
  ACPI: linux/acpi.h should not include linux/dmi.h
  hwmon driver for ACPI 4.0 power meters
  topstar-laptop: add new driver for hotkeys support on Topstar N01
  thinkpad_acpi: fix rfkill memory leak on unload
  thinkpad-acpi: report brightness events when required
  thinkpad-acpi: don't poll by default any of the reserved hotkeys
  thinkpad-acpi: Fix procfs hotkey reset command
  thinkpad-acpi: deprecate hotkey_bios_mask
  thinkpad-acpi: hotkey poll fixes
  thinkpad-acpi: be more strict when detecting a ThinkPad
  ...
2009-09-23 09:32:11 -07:00
Linus Torvalds
40aba21896 Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c: Clearly mark ACPI drivers as such
  i2c: Add driver for SMBus Control Method Interface
  i2c-pnx: Correct use of request_region/request_mem_region
  MAINTAINERS: Add maintainer for AT24 and PCA9564/PCA9665
  i2c-piix4: Add AMD SB900 SMBus device ID
  i2c/chips: Remove deprecated pcf8574 driver
  i2c/chips: Remove deprecated pca9539 driver
  i2c/chips: Remove deprecated pcf8575 driver
  gpio/pcf857x: Copy i2c_device_id from old pcf8574 driver
  i2c/scx200_acb: Provide more information on bus errors
  i2c: Provide compatibility links for i2c adapters
  i2c: Convert i2c adapters to bus devices
  i2c: Convert i2c clients to a device type
  i2c/tsl2550: Use combined SMBus transactions
  i2c-taos-evm: Switch echo off to improve performance
  i2c: Drop unused i2c_driver.id field
2009-09-23 09:30:48 -07:00
Linus Torvalds
be90a49ca2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (142 commits)
  USB: Fix sysfs paths in documentation
  USB: skeleton: fix coding style issues.
  USB: O_NONBLOCK in read path of skeleton
  USB: make usb-skeleton honor O_NONBLOCK in write path
  USB: skel_read really sucks royally
  USB: Add hub descriptor update hook for xHCI
  USB: xhci: Support USB hubs.
  USB: xhci: Set multi-TT field for LS/FS devices under hubs.
  USB: xhci: Set route string for all devices.
  USB: xhci: Fix command wait list handling.
  USB: xhci: Change how xHCI commands are handled.
  USB: xhci: Refactor input device context setup.
  USB: xhci: Endpoint representation refactoring.
  USB: gadget: ether needs to select CRC32
  USB: fix USBTMC get_capabilities success handling
  USB: fix missing error check in probing
  USB: usbfs: add USBDEVFS_URB_BULK_CONTINUATION flag
  USB: support for autosuspend in sierra while online
  USB: ehci-dbgp,ehci: Allow dbpg to work with suspend/resume
  USB: ehci-dbgp,documentation: Documentation updates for ehci-dbgp
  ...
2009-09-23 09:25:16 -07:00
Linus Torvalds
1f0918d03f Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  lguest: don't force VIRTIO_F_NOTIFY_ON_EMPTY
  lguest: cleanup for map_switcher()
  lguest: use PGDIR_SHIFT for PAE code to allow different PAGE_OFFSET
  lguest: use set_pte/set_pmd uniformly for real page table entries
  lguest: move panic notifier registration to its expected place.
  virtio_blk: add support for cache flush
  virtio: add virtio IDs file
  virtio: get rid of redundant VIRTIO_ID_9P definition
  virtio: make add_buf return capacity remaining
  virtio_pci: minor MSI-X cleanups
2009-09-23 09:23:45 -07:00
Jean Delvare
0728bacbba matroxfb: make CONFIG_FB_MATROX_MULTIHEAD=y mandatory
I would like to get rid of option CONFIG_FB_MATROX_MULTIHEAD and just
always enable it.  There are many reasons for doing this:

* CONFIG_FB_MATROX_MULTIHEAD=y is what all x86 distributions do, so it
  definitely works or we would know by now.

* Building the matroxfb driver with CONFIG_FB_MATROX_MULTIHEAD not set
  results in the following build warning:

drivers/video/matrox/matroxfb_crtc2.c: In function 'matroxfb_dh_open':
drivers/video/matrox/matroxfb_crtc2.c:265: warning: the address of 'matroxfb_global_mxinfo' will always evaluate as 'true'
drivers/video/matrox/matroxfb_crtc2.c: In function 'matroxfb_dh_release':
drivers/video/matrox/matroxfb_crtc2.c:285: warning: the address of 'matroxfb_global_mxinfo' will always evaluate as 'true'

This is nothing to be worried about, the driver will work fine, but build
warnings are still annoying.

* The trick to get multihead support without CONFIG_FB_MATROX_MULTIHEAD,
  which is described in the config help text, no longer works: you can't
  load the same kernel module more than once.

* I fail to see how CONFIG_FB_MATROX_MULTIHEAD=y would make the code
  significantly slower, contrary to what the help text says.  A few extra
  parameters on the stack here and there can't really slow things down in
  comaprison to the rest of the code, and register access.

* The driver built without CONFIG_FB_MATROX_MULTIHEAD is larger than the
  driver build with CONFIG_FB_MATROX_MULTIHEAD=y by 8%.

* One less configuration option makes things simpler.  We add options
  all the time, being able to remove one for once is nice.  It improves
  testing coverage.  And I don't think the Matrox adapters are still
  popular enough to warrant overdetailed configuration settings.

* We should be able to unobfuscate the driver code quite a bit after
  this change (patches follow.)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Petr Vandrovec <vandrove@vc.cvut.cz>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23 07:39:56 -07:00
Ryan Mallon
88017bda96 ep93xx video driver
EP93xx video driver plus documentation.

Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Daniele Venzano <linux@brownhat.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23 07:39:51 -07:00