mirror of
https://github.com/adulau/aha.git
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fb1c8f93d8
This patch (written by me and also containing many suggestions of Arjan van de Ven) does a major cleanup of the spinlock code. It does the following things: - consolidates and enhances the spinlock/rwlock debugging code - simplifies the asm/spinlock.h files - encapsulates the raw spinlock type and moves generic spinlock features (such as ->break_lock) into the generic code. - cleans up the spinlock code hierarchy to get rid of the spaghetti. Most notably there's now only a single variant of the debugging code, located in lib/spinlock_debug.c. (previously we had one SMP debugging variant per architecture, plus a separate generic one for UP builds) Also, i've enhanced the rwlock debugging facility, it will now track write-owners. There is new spinlock-owner/CPU-tracking on SMP builds too. All locks have lockup detection now, which will work for both soft and hard spin/rwlock lockups. The arch-level include files now only contain the minimally necessary subset of the spinlock code - all the rest that can be generalized now lives in the generic headers: include/asm-i386/spinlock_types.h | 16 include/asm-x86_64/spinlock_types.h | 16 I have also split up the various spinlock variants into separate files, making it easier to see which does what. The new layout is: SMP | UP ----------------------------|----------------------------------- asm/spinlock_types_smp.h | linux/spinlock_types_up.h linux/spinlock_types.h | linux/spinlock_types.h asm/spinlock_smp.h | linux/spinlock_up.h linux/spinlock_api_smp.h | linux/spinlock_api_up.h linux/spinlock.h | linux/spinlock.h /* * here's the role of the various spinlock/rwlock related include files: * * on SMP builds: * * asm/spinlock_types.h: contains the raw_spinlock_t/raw_rwlock_t and the * initializers * * linux/spinlock_types.h: * defines the generic type and initializers * * asm/spinlock.h: contains the __raw_spin_*()/etc. lowlevel * implementations, mostly inline assembly code * * (also included on UP-debug builds:) * * linux/spinlock_api_smp.h: * contains the prototypes for the _spin_*() APIs. * * linux/spinlock.h: builds the final spin_*() APIs. * * on UP builds: * * linux/spinlock_type_up.h: * contains the generic, simplified UP spinlock type. * (which is an empty structure on non-debug builds) * * linux/spinlock_types.h: * defines the generic type and initializers * * linux/spinlock_up.h: * contains the __raw_spin_*()/etc. version of UP * builds. (which are NOPs on non-debug, non-preempt * builds) * * (included on UP-non-debug builds:) * * linux/spinlock_api_up.h: * builds the _spin_*() APIs. * * linux/spinlock.h: builds the final spin_*() APIs. */ All SMP and UP architectures are converted by this patch. arm, i386, ia64, ppc, ppc64, s390/s390x, x64 was build-tested via crosscompilers. m32r, mips, sh, sparc, have not been tested yet, but should be mostly fine. From: Grant Grundler <grundler@parisc-linux.org> Booted and lightly tested on a500-44 (64-bit, SMP kernel, dual CPU). Builds 32-bit SMP kernel (not booted or tested). I did not try to build non-SMP kernels. That should be trivial to fix up later if necessary. I converted bit ops atomic_hash lock to raw_spinlock_t. Doing so avoids some ugly nesting of linux/*.h and asm/*.h files. Those particular locks are well tested and contained entirely inside arch specific code. I do NOT expect any new issues to arise with them. If someone does ever need to use debug/metrics with them, then they will need to unravel this hairball between spinlocks, atomic ops, and bit ops that exist only because parisc has exactly one atomic instruction: LDCW (load and clear word). From: "Luck, Tony" <tony.luck@intel.com> ia64 fix Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjanv@infradead.org> Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Cc: Matthew Wilcox <willy@debian.org> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Mikael Pettersson <mikpe@csd.uu.se> Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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| byteorder | ||
| dvb | ||
| hdlc | ||
| isdn | ||
| lockd | ||
| mmc | ||
| mtd | ||
| netfilter | ||
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| netfilter_bridge | ||
| netfilter_ipv4 | ||
| netfilter_ipv6 | ||
| nfsd | ||
| raid | ||
| sunrpc | ||
| tc_act | ||
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| 8250_pci.h | ||
| a.out.h | ||
| ac97_codec.h | ||
| acct.h | ||
| acpi.h | ||
| adb.h | ||
| adfs_fs.h | ||
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| audit.h | ||
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| backlight.h | ||
| baycom.h | ||
| bcd.h | ||
| bfs_fs.h | ||
| binfmts.h | ||
| bio.h | ||
| bit_spinlock.h | ||
| bitmap.h | ||
| bitops.h | ||
| blkdev.h | ||
| blkpg.h | ||
| blockgroup_lock.h | ||
| bootmem.h | ||
| bpqether.h | ||
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| cache.h | ||
| capability.h | ||
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| cciss_ioctl.h | ||
| cd1400.h | ||
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| cdk.h | ||
| cdrom.h | ||
| chio.h | ||
| circ_buf.h | ||
| cobalt-nvram.h | ||
| coda.h | ||
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| device.h | ||
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| dqblk_xfs.h | ||
| ds1286.h | ||
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| efi.h | ||
| efs_dir.h | ||
| efs_fs.h | ||
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| efs_vh.h | ||
| eisa.h | ||
| elevator.h | ||
| elf-fdpic.h | ||
| elf.h | ||
| elfcore.h | ||
| err.h | ||
| errno.h | ||
| errqueue.h | ||
| etherdevice.h | ||
| ethtool.h | ||
| eventpoll.h | ||
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| ext3_fs.h | ||
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| fd.h | ||
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| file.h | ||
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| firmware.h | ||
| flat.h | ||
| font.h | ||
| fs.h | ||
| fs_struct.h | ||
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| fsnotify.h | ||
| ftape-header-segment.h | ||
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| fuse.h | ||
| futex.h | ||
| gameport.h | ||
| gen_stats.h | ||
| genalloc.h | ||
| generic_serial.h | ||
| genhd.h | ||
| gfp.h | ||
| hardirq.h | ||
| harrier_defs.h | ||
| hash.h | ||
| hayesesp.h | ||
| hdlc.h | ||
| hdlcdrv.h | ||
| hdpu_features.h | ||
| hdreg.h | ||
| hdsmart.h | ||
| hiddev.h | ||
| highmem.h | ||
| highuid.h | ||
| hippidevice.h | ||
| hpet.h | ||
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| hugetlb.h | ||
| hwmon-sysfs.h | ||
| hwmon-vid.h | ||
| hwmon.h | ||
| hysdn_if.h | ||
| i2c-algo-bit.h | ||
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| i2c-algo-sgi.h | ||
| i2c-algo-sibyte.h | ||
| i2c-dev.h | ||
| i2c-id.h | ||
| i2c-isa.h | ||
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| i2c.h | ||
| i2o-dev.h | ||
| i2o.h | ||
| i8k.h | ||
| ibmtr.h | ||
| icmp.h | ||
| icmpv6.h | ||
| ide.h | ||
| idr.h | ||
| if.h | ||
| if_arcnet.h | ||
| if_arp.h | ||
| if_bonding.h | ||
| if_bridge.h | ||
| if_cablemodem.h | ||
| if_ec.h | ||
| if_eql.h | ||
| if_ether.h | ||
| if_fc.h | ||
| if_fddi.h | ||
| if_frad.h | ||
| if_hippi.h | ||
| if_infiniband.h | ||
| if_ltalk.h | ||
| if_packet.h | ||
| if_plip.h | ||
| if_ppp.h | ||
| if_pppox.h | ||
| if_shaper.h | ||
| if_slip.h | ||
| if_strip.h | ||
| if_tr.h | ||
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| if_tunnel.h | ||
| if_vlan.h | ||
| if_wanpipe.h | ||
| if_wanpipe_common.h | ||
| igmp.h | ||
| in.h | ||
| in6.h | ||
| in_route.h | ||
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| inet_diag.h | ||
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| init.h | ||
| init_task.h | ||
| initrd.h | ||
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| input.h | ||
| interrupt.h | ||
| ioc4.h | ||
| ioctl.h | ||
| ioctl32.h | ||
| ioport.h | ||
| ioprio.h | ||
| ip.h | ||
| ip6_tunnel.h | ||
| ip_mp_alg.h | ||
| ipc.h | ||
| ipmi.h | ||
| ipmi_msgdefs.h | ||
| ipmi_smi.h | ||
| ipsec.h | ||
| ipv6.h | ||
| ipv6_route.h | ||
| ipx.h | ||
| irda.h | ||
| irq.h | ||
| irq_cpustat.h | ||
| isapnp.h | ||
| isdn.h | ||
| isdn_divertif.h | ||
| isdn_ppp.h | ||
| isdnif.h | ||
| isicom.h | ||
| iso_fs.h | ||
| istallion.h | ||
| ite_gpio.h | ||
| ixjuser.h | ||
| jbd.h | ||
| jffs.h | ||
| jffs2.h | ||
| jffs2_fs_i.h | ||
| jffs2_fs_sb.h | ||
| jhash.h | ||
| jiffies.h | ||
| journal-head.h | ||
| joystick.h | ||
| kallsyms.h | ||
| kbd_diacr.h | ||
| kbd_kern.h | ||
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| kernel.h | ||
| kernel_stat.h | ||
| kernelcapi.h | ||
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| key-ui.h | ||
| key.h | ||
| keyboard.h | ||
| keyctl.h | ||
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| klist.h | ||
| kmalloc_sizes.h | ||
| kmod.h | ||
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| lapb.h | ||
| lcd.h | ||
| libata.h | ||
| libps2.h | ||
| limits.h | ||
| linkage.h | ||
| linux_logo.h | ||
| list.h | ||
| llc.h | ||
| loop.h | ||
| lp.h | ||
| major.h | ||
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| mbcache.h | ||
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| mc146818rtc.h | ||
| mca-legacy.h | ||
| mca.h | ||
| mempolicy.h | ||
| mempool.h | ||
| meye.h | ||
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| minix_fs.h | ||
| miscdevice.h | ||
| mm.h | ||
| mm_inline.h | ||
| mman.h | ||
| mmtimer.h | ||
| mmzone.h | ||
| mod_devicetable.h | ||
| module.h | ||
| moduleloader.h | ||
| moduleparam.h | ||
| mount.h | ||
| mpage.h | ||
| mqueue.h | ||
| mroute.h | ||
| msdos_fs.h | ||
| msg.h | ||
| mtio.h | ||
| mv643xx.h | ||
| n_r3964.h | ||
| namei.h | ||
| namespace.h | ||
| nbd.h | ||
| ncp.h | ||
| ncp_fs.h | ||
| ncp_fs_i.h | ||
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| ncp_mount.h | ||
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| net.h | ||
| netdevice.h | ||
| netfilter.h | ||
| netfilter_arp.h | ||
| netfilter_bridge.h | ||
| netfilter_decnet.h | ||
| netfilter_ipv4.h | ||
| netfilter_ipv6.h | ||
| netfilter_logging.h | ||
| netlink.h | ||
| netpoll.h | ||
| netrom.h | ||
| nfs.h | ||
| nfs2.h | ||
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| nfs4.h | ||
| nfs4_acl.h | ||
| nfs4_mount.h | ||
| nfs_fs.h | ||
| nfs_fs_i.h | ||
| nfs_fs_sb.h | ||
| nfs_idmap.h | ||
| nfs_mount.h | ||
| nfs_page.h | ||
| nfs_xdr.h | ||
| nfsacl.h | ||
| nfsd_idmap.h | ||
| nls.h | ||
| nmi.h | ||
| node.h | ||
| nodemask.h | ||
| notifier.h | ||
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| numa.h | ||
| nvram.h | ||
| openprom_fs.h | ||
| oprofile.h | ||
| page-flags.h | ||
| pagemap.h | ||
| pagevec.h | ||
| param.h | ||
| parport.h | ||
| parport_pc.h | ||
| parser.h | ||
| patchkey.h | ||
| pci-acpi.h | ||
| pci.h | ||
| pci_ids.h | ||
| pci_regs.h | ||
| pcieport_if.h | ||
| percpu.h | ||
| percpu_counter.h | ||
| personality.h | ||
| pfkeyv2.h | ||
| pg.h | ||
| phonedev.h | ||
| phy.h | ||
| pid.h | ||
| pipe_fs_i.h | ||
| pkt_cls.h | ||
| pkt_sched.h | ||
| pktcdvd.h | ||
| platform.h | ||
| pm.h | ||
| pmu.h | ||
| pnp.h | ||
| pnpbios.h | ||
| poll.h | ||
| posix-timers.h | ||
| posix_acl.h | ||
| posix_acl_xattr.h | ||
| posix_types.h | ||
| ppdev.h | ||
| ppp-comp.h | ||
| ppp_channel.h | ||
| ppp_defs.h | ||
| prctl.h | ||
| preempt.h | ||
| prefetch.h | ||
| prio_tree.h | ||
| proc_fs.h | ||
| profile.h | ||
| ps2esdi.h | ||
| ptrace.h | ||
| qic117.h | ||
| qnx4_fs.h | ||
| qnxtypes.h | ||
| quota.h | ||
| quotaio_v1.h | ||
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| quotaops.h | ||
| radeonfb.h | ||
| radix-tree.h | ||
| raid_class.h | ||
| ramfs.h | ||
| random.h | ||
| raw.h | ||
| rbtree.h | ||
| rcupdate.h | ||
| rcuref.h | ||
| reboot.h | ||
| reboot_fixups.h | ||
| reiserfs_acl.h | ||
| reiserfs_fs.h | ||
| reiserfs_fs_i.h | ||
| reiserfs_fs_sb.h | ||
| reiserfs_xattr.h | ||
| relayfs_fs.h | ||
| resource.h | ||
| rmap.h | ||
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| root_dev.h | ||
| rose.h | ||
| route.h | ||
| rslib.h | ||
| rtc.h | ||
| rtnetlink.h | ||
| rwsem-spinlock.h | ||
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| sc26198.h | ||
| scatterlist.h | ||
| scc.h | ||
| sched.h | ||
| sctp.h | ||
| scx200.h | ||
| scx200_gpio.h | ||
| sdla.h | ||
| sdla_asy.h | ||
| sdla_chdlc.h | ||
| sdla_fr.h | ||
| sdla_ppp.h | ||
| sdla_x25.h | ||
| sdladrv.h | ||
| sdlapci.h | ||
| sdlasfm.h | ||
| seccomp.h | ||
| securebits.h | ||
| security.h | ||
| selection.h | ||
| selinux_netlink.h | ||
| sem.h | ||
| seq_file.h | ||
| seqlock.h | ||
| serial.h | ||
| serial167.h | ||
| serial_8250.h | ||
| serial_core.h | ||
| serial_reg.h | ||
| serialP.h | ||
| serio.h | ||
| shm.h | ||
| shmem_fs.h | ||
| signal.h | ||
| skbuff.h | ||
| slab.h | ||
| smb.h | ||
| smb_fs.h | ||
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| smp.h | ||
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| snmp.h | ||
| socket.h | ||
| sockios.h | ||
| som.h | ||
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| sound.h | ||
| soundcard.h | ||
| spinlock.h | ||
| spinlock_api_smp.h | ||
| spinlock_api_up.h | ||
| spinlock_types.h | ||
| spinlock_types_up.h | ||
| spinlock_up.h | ||
| stallion.h | ||
| stat.h | ||
| statfs.h | ||
| stddef.h | ||
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| string.h | ||
| stringify.h | ||
| superhyway.h | ||
| suspend.h | ||
| swap.h | ||
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| synclink.h | ||
| sys.h | ||
| syscalls.h | ||
| sysctl.h | ||
| sysdev.h | ||
| sysfs.h | ||
| sysrq.h | ||
| sysv_fs.h | ||
| tcp.h | ||
| telephony.h | ||
| termios.h | ||
| textsearch.h | ||
| textsearch_fsm.h | ||
| thread_info.h | ||
| threads.h | ||
| ticable.h | ||
| time.h | ||
| timer.h | ||
| times.h | ||
| timex.h | ||
| tiocl.h | ||
| topology.h | ||
| toshiba.h | ||
| transport_class.h | ||
| trdevice.h | ||
| tty.h | ||
| tty_driver.h | ||
| tty_flip.h | ||
| tty_ldisc.h | ||
| types.h | ||
| udf_fs.h | ||
| udf_fs_i.h | ||
| udf_fs_sb.h | ||
| udp.h | ||
| ufs_fs.h | ||
| ufs_fs_i.h | ||
| ufs_fs_sb.h | ||
| uinput.h | ||
| uio.h | ||
| ultrasound.h | ||
| umem.h | ||
| un.h | ||
| unistd.h | ||
| usb.h | ||
| usb_cdc.h | ||
| usb_ch9.h | ||
| usb_gadget.h | ||
| usb_gadgetfs.h | ||
| usb_input.h | ||
| usb_isp116x.h | ||
| usb_otg.h | ||
| usb_sl811.h | ||
| usbdevice_fs.h | ||
| user.h | ||
| utime.h | ||
| uts.h | ||
| utsname.h | ||
| vermagic.h | ||
| vfs.h | ||
| via.h | ||
| video_decoder.h | ||
| video_encoder.h | ||
| videodev.h | ||
| videodev2.h | ||
| videotext.h | ||
| vmalloc.h | ||
| vt.h | ||
| vt_buffer.h | ||
| vt_kern.h | ||
| wait.h | ||
| wanpipe.h | ||
| wanrouter.h | ||
| watchdog.h | ||
| wavefront.h | ||
| wireless.h | ||
| workqueue.h | ||
| writeback.h | ||
| x25.h | ||
| xattr.h | ||
| xfrm.h | ||
| yam.h | ||
| zconf.h | ||
| zftape.h | ||
| zlib.h | ||
| zorro.h | ||
| zorro_ids.h | ||
| zutil.h | ||