Linus Torvalds a08727bae7 Make workqueue bit operations work on "atomic_long_t" ... On architectures where the atomicity of the bit operations is handled by external means (ie a separate spinlock to protect concurrent accesses), just doing a direct assignment on the workqueue data field (as done by commit 4594bf159f) can cause the assignment to be lost due to lack of serialization with the bitops on the same word. So we need to serialize the assignment with the locks on those architectures (notably older ARM chips, PA-RISC and sparc32). So rather than using an "unsigned long", let's use "atomic_long_t", which already has a safe assignment operation (atomic_long_set()) on such architectures. This requires that the atomic operations use the same atomicity locks as the bit operations do, but that is largely the case anyway. Sparc32 will probably need fixing. Architectures (including modern ARM with LL/SC) that implement sane atomic operations for SMP won't see any of this matter. Cc: Russell King <rmk+lkml@arm.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: David Miller <davem@davemloft.com> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Linux Arch Maintainers <linux-arch@vger.kernel.org> Cc: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-12-16 09:53:50 -08:00
..
irq	[PATCH] CPEI gets warning at kernel/irq/migration.c:27/move_masked_irq()	2006-12-08 08:28:37 -08:00
power	Driver core: deprecate PM_LEGACY, default it to N	2006-12-13 15:38:46 -08:00
time	[PATCH] clocksource: small cleanup	2006-12-10 09:57:22 -08:00
.gitignore	gitignore: ignore more generated files	2006-01-03 11:35:26 +01:00
acct.c	[PATCH] kernel: change uses of f_{dentry, vfsmnt} to use f_path	2006-12-08 08:28:42 -08:00
audit.c	[PATCH] Add include/linux/freezer.h and move definitions from sched.h	2006-12-07 08:39:27 -08:00
audit.h	[PATCH] audit: AUDIT_PERM support	2006-09-11 13:32:30 -04:00
auditfilter.c	[PATCH] kernel core: replace kmalloc+memset with kzalloc	2006-12-07 08:39:41 -08:00
auditsc.c	[PATCH] struct path: convert kernel	2006-12-08 08:28:46 -08:00
capability.c	[PATCH] pidspace: is_init()	2006-09-29 09:18:12 -07:00
compat.c	[PATCH] Create compat_sys_migrate_pages	2006-11-03 12:27:59 -08:00
configs.c	[PATCH] struct seq_operations and struct file_operations constification	2006-12-07 08:39:46 -08:00
cpu.c	[PATCH] suspend: don't change cpus_allowed for task initiating the suspend	2006-12-07 08:39:28 -08:00
cpuset.c	[PATCH] cpuset: rework cpuset_zone_allowed api	2006-12-13 09:05:49 -08:00
delayacct.c	[PATCH] slab: remove kmem_cache_t	2006-12-07 08:39:25 -08:00
dma.c	[PATCH] struct seq_operations and struct file_operations constification	2006-12-07 08:39:46 -08:00
exec_domain.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
exit.c	[PATCH] fdtable: Remove the free_files field	2006-12-10 09:57:22 -08:00
extable.c	[PATCH] symbol_put_addr() locks kernel	2006-05-15 11:20:55 -07:00
fork.c	[PATCH] Optimize D-cache alias handling on fork	2006-12-13 09:27:08 -08:00
futex.c	[PATCH] kernel: change uses of f_{dentry, vfsmnt} to use f_path	2006-12-08 08:28:42 -08:00
futex_compat.c	[PATCH] __user annotations: futex	2006-10-10 15:37:22 -07:00
hrtimer.c	[PATCH] posix-timers: Fix clock_nanosleep() doesn't return the remaining time in compatibility mode	2006-09-29 09:18:15 -07:00
itimer.c	[PATCH] hrtimers: remove data field	2006-03-26 08:57:03 -08:00
kallsyms.c	[PATCH] move kallsyms data to .rodata	2006-12-08 08:28:37 -08:00
Kconfig.hz	[PATCH] HZ: 300Hz support	2006-12-07 08:39:36 -08:00
Kconfig.preempt	[PATCH] sched: voluntary kernel preemption	2005-06-25 16:24:45 -07:00
kexec.c	Merge branch 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6	2006-12-07 15:39:22 -08:00
kfifo.c	[PATCH] memory ordering in __kfifo primitives	2006-09-29 09:18:13 -07:00
kmod.c	[PATCH] rename struct namespace to struct mnt_namespace	2006-12-08 08:28:51 -08:00
kprobes.c	[PATCH] kprobes: enable booster on the preemptible kernel	2006-12-07 08:39:38 -08:00
ksysfs.c	Remove obsolete #include <linux/config.h>	2006-06-30 19:25:36 +02:00
kthread.c	WorkStruct: Pass the work_struct pointer instead of context data	2006-11-22 14:55:48 +00:00
latency.c	[PATCH] severing module.h->sched.h	2006-12-04 02:00:22 -05:00
lockdep.c	[PATCH] lockdep: fix possible races while disabling lock-debugging	2006-12-13 09:05:50 -08:00
lockdep_internals.h	[PATCH] lockdep: more chains	2006-12-07 08:39:43 -08:00
lockdep_proc.c	[PATCH] struct seq_operations and struct file_operations constification	2006-12-07 08:39:46 -08:00
Makefile	Remove stack unwinder for now	2006-12-15 08:47:51 -08:00
module.c	Driver core: show "initstate" of module	2006-12-13 15:38:45 -08:00
mutex-debug.c	[PATCH] lockdep: show more details about self-test failures	2006-12-07 08:39:43 -08:00
mutex-debug.h	[PATCH] lockdep: better lock debugging	2006-07-03 15:27:01 -07:00
mutex.c	[PATCH] lockdep: avoid lockdep warning in md	2006-12-08 08:28:39 -08:00
mutex.h	[PATCH] lockdep: prove mutex locking correctness	2006-07-03 15:27:04 -07:00
nsproxy.c	[PATCH] Revert "[PATCH] identifier to nsproxy"	2006-12-13 09:05:47 -08:00
panic.c	[PATCH] x86: Clean up x86 NMI sysctls	2006-09-30 01:47:55 +02:00
params.c	[PATCH] module_subsys: initialize earlier	2006-09-29 09:18:08 -07:00
pid.c	[PATCH] add child reaper to pid_namespace	2006-12-08 08:28:52 -08:00
posix-cpu-timers.c	[PATCH] posix-cpu-timers: prevent signal delivery starvation	2006-10-17 08:18:43 -07:00
posix-timers.c	[PATCH] slab: remove kmem_cache_t	2006-12-07 08:39:25 -08:00
printk.c	[PATCH] add ignore_loglevel boot option	2006-12-07 08:39:47 -08:00
profile.c	[PATCH] struct seq_operations and struct file_operations constification	2006-12-07 08:39:46 -08:00
ptrace.c	[PATCH] pidspace: is_init()	2006-09-29 09:18:12 -07:00
rcupdate.c	[PATCH] rcu: add a prefetch() in rcu_do_batch()	2006-12-07 08:39:40 -08:00
rcutorture.c	[PATCH] Add Sparse annotations to SRCU wrapper functions in rcutorture	2006-12-07 08:39:44 -08:00
relay.c	[PATCH] Fix numerous kcalloc() calls, convert to kzalloc()	2006-12-13 09:05:52 -08:00
resource.c	[PATCH] struct seq_operations and struct file_operations constification	2006-12-07 08:39:46 -08:00
rtmutex-debug.c	Remove all inclusions of <linux/config.h>	2006-10-04 03:38:54 -04:00
rtmutex-debug.h	[PATCH] lockdep: better lock debugging	2006-07-03 15:27:01 -07:00
rtmutex-tester.c	[PATCH] Add include/linux/freezer.h and move definitions from sched.h	2006-12-07 08:39:27 -08:00
rtmutex.c	[PATCH] clean up and remove some extra spinlocks from rtmutex	2006-09-29 09:18:09 -07:00
rtmutex.h	[PATCH] lockdep: better lock debugging	2006-07-03 15:27:01 -07:00
rtmutex_common.h	[PATCH] pi-futex: futex_lock_pi/futex_unlock_pi support	2006-06-27 17:32:47 -07:00
rwsem.c	[PATCH] lockdep: prove rwsem locking correctness	2006-07-03 15:27:04 -07:00
sched.c	[PATCH] lockdep: print irq-trace info on asserts	2006-12-13 09:05:50 -08:00
seccomp.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
signal.c	[PATCH] PM: Fix freezing of stopped tasks	2006-12-13 09:05:49 -08:00
softirq.c	[PATCH] softirq: remove BUG_ONs which can incorrectly trigger	2006-12-07 08:39:43 -08:00
softlockup.c	[PATCH] check return value of cpu_callback	2006-09-29 09:18:14 -07:00
spinlock.c	[PATCH] lockdep: spin_lock_irqsave_nested()	2006-11-25 13:28:34 -08:00
srcu.c	[PATCH] SRCU: report out-of-memory errors	2006-10-04 07:55:30 -07:00
stacktrace.c	[PATCH] lockdep: stacktrace subsystem, core	2006-07-03 15:27:02 -07:00
stop_machine.c	[PATCH] stop_machine.c copyright	2006-09-29 09:18:24 -07:00
sys.c	[PATCH] sys_setpgid: eliminate unnecessary do_each_task_pid(PIDTYPE_PGID)	2006-12-08 08:28:52 -08:00
sys_ni.c	[PATCH] Create compat_sys_migrate_pages	2006-11-03 12:27:59 -08:00
sysctl.c	[PATCH] debug: add sysrq_always_enabled boot option	2006-12-13 09:05:50 -08:00
taskstats.c	[PATCH] taskstats: cleanup reply assembling	2006-12-07 08:39:34 -08:00
time.c	[PATCH] NTP: Move all the NTP related code to ntp.c	2006-10-01 00:39:26 -07:00
timer.c	[PATCH] Optimize calc_load()	2006-12-13 09:05:55 -08:00
tsacct.c	[PATCH] io-accounting: via taskstats	2006-12-10 09:55:41 -08:00
uid16.c	[PATCH] Add more prevent_tail_call()	2006-04-19 16:27:18 -07:00
user.c	[PATCH] slab: remove kmem_cache_t	2006-12-07 08:39:25 -08:00
utsname.c	[PATCH] namespaces: utsname: implement CLONE_NEWUTS flag	2006-10-02 07:57:22 -07:00
wait.c	[PATCH] uninline init_waitqueue_head()	2006-07-10 13:24:25 -07:00
workqueue.c	Make workqueue bit operations work on "atomic_long_t"	2006-12-16 09:53:50 -08:00