Steffen Klassert d46a5ac7a7 padata: Use a timer to handle remaining objects in the reorder queues ... padata_get_next needs to check whether the next object that need serialization must be parallel processed by the local cpu. This check was wrong implemented and returned always true, so the try_again loop in padata_reorder was never taken. This can lead to object leaks in some rare cases due to a race that appears with the trylock in padata_reorder. The try_again loop was not a good idea after all, because a cpu could take that loop frequently, so we handle this with a timer instead. This patch adds a timer to handle the race that appears with the trylock. If cpu1 queues an object to the reorder queue while cpu2 holds the pd->lock but left the while loop in padata_reorder already, cpu2 can't care for this object and cpu1 exits because it can't get the lock. Usually the next cpu that takes the lock cares for this object too. We need the timer just if this object was the last one that arrives to the reorder queues. The timer function sends it out in this case. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>		2010-05-19 13:43:14 +10:00
..
gcov
irq	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-04-06 13:03:22 -07:00
power	PM / Hibernate: user.c, fix SNAPSHOT_SET_SWAP_AREA handling	2010-04-10 22:28:56 +02:00
time	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
trace	Merge branch 'master' into export-slabh	2010-04-05 11:37:28 +09:00
.gitignore
acct.c	copy_signal() cleanup: kill taskstats_tgid_init() and acct_init_pacct()	2010-03-12 15:52:39 -08:00
async.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
audit.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
audit.h
audit_tree.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
audit_watch.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
auditfilter.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
auditsc.c	audit: preface audit printk with audit	2010-04-05 13:19:45 -07:00
backtracetest.c
bounds.c
capability.c
cgroup.c	cgroups: remove duplicate include	2010-03-24 16:31:19 -07:00
cgroup_freezer.c	Merge branch 'master' into export-slabh	2010-04-05 11:37:28 +09:00
compat.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
configs.c
cpu.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
cpuset.c	cpuset: alloc nodemask_t on the heap rather than the stack	2010-03-24 16:31:21 -07:00
cred-internals.h
cred.c	CRED: Fix a race in creds_are_invalid() in credentials debugging	2010-04-22 09:14:29 +10:00
delayacct.c
dma.c
early_res.c	x86: Do not free zero sized per cpu areas	2010-03-29 18:55:40 +02:00
elfcore.c
exec_domain.c
exit.c	mm: avoid null-pointer deref in sync_mm_rss()	2010-04-07 08:38:02 -07:00
extable.c
fork.c	mm: avoid null-pointer deref in sync_mm_rss()	2010-04-07 08:38:02 -07:00
freezer.c
futex.c
futex_compat.c	futex: Protect pid lookup in compat code with RCU	2009-12-09 14:22:14 +01:00
groups.c
hrtimer.c
hung_task.c
hw_breakpoint.c
itimer.c	itimers: Fix racy writes to cpu_itimer fields	2009-11-18 16:32:12 +01:00
kallsyms.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c
kfifo.c
kgdb.c	kgdb: Turn off tracing while in the debugger	2010-04-02 14:58:19 -05:00
kmod.c
kprobes.c	kprobes: Calculate the index correctly when freeing the out-of-line execution slot	2010-03-11 14:06:16 +01:00
ksysfs.c
kthread.c	cpuset: fix the problem that cpuset_mem_spread_node() returns an offline node	2010-03-24 16:31:21 -07:00
latencytop.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
lockdep.c	Merge branch 'slabh' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc	2010-04-05 09:39:11 -07:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile
module.c	Fix up possibly racy module refcounting	2010-04-05 19:50:02 -07:00
mutex-debug.c	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
mutex-debug.h	locking: Implement new raw_spinlock	2009-12-14 23:55:32 +01:00
mutex.c	mutex: Better control mutex adaptive spinning config	2009-12-03 11:50:11 +01:00
mutex.h	mutex: implement adaptive spinning	2009-01-14 18:09:02 +01:00
notifier.c	sched: Use lockdep-based checking on rcu_dereference()	2010-02-25 10:34:26 +01:00
ns_cgroup.c
nsproxy.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
padata.c	padata: Use a timer to handle remaining objects in the reorder queues	2010-05-19 13:43:14 +10:00
panic.c	panic: fix panic_timeout accuracy when running on a hypervisor	2010-03-06 11:26:33 -08:00
params.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-03-12 16:04:50 -08:00
perf_event.c	Merge branch 'master' into export-slabh	2010-04-05 11:37:28 +09:00
pid.c	Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-03-13 14:43:01 -08:00
pid_namespace.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
pm_qos_params.c
posix-cpu-timers.c	Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-03-26 15:10:38 -07:00
posix-timers.c	posix-timers.c: Don't export local functions	2010-02-05 14:54:10 +01:00
printk.c
profile.c	kernel/profile.c: Switch /proc/irq/prof_cpu_mask to seq_file	2009-09-20 20:15:40 +02:00
ptrace.c	ptrace: Fix ptrace_regset() comments and diagnose errors specifically	2010-02-23 13:45:26 -08:00
range.c
rcupdate.c	rcu: Make RCU lockdep check the lockdep_recursion variable	2010-04-19 08:37:19 +02:00
rcutiny.c
rcutorture.c
rcutree.c
rcutree.h	rcu: Increase RCU CPU stall timeouts if PROVE_RCU	2010-03-11 13:38:01 +01:00
rcutree_plugin.h
rcutree_trace.c	rcu: Stop overflowing signed integers	2010-02-25 10:34:57 +01:00
relay.c
res_counter.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
resource.c	resources: add interfaces that return conflict information	2010-03-23 13:33:50 -07:00
rtmutex-debug.c	sched: Convert pi_lock to raw_spinlock	2009-12-14 23:55:33 +01:00
rtmutex-debug.h	[PATCH] lockdep: better lock debugging	2006-07-03 15:27:01 -07:00
rtmutex-tester.c	sysdev: Pass the attribute to the low level sysdev show/store function	2008-07-21 21:55:02 -07:00
rtmutex.c
rtmutex.h
rtmutex_common.h	rt_mutex: add proxy lock routines	2009-04-06 11:14:02 +02:00
rwsem.c	sched: mark rwsem functions as __sched for wchan/profiling	2007-12-18 15:21:13 +01:00
sched.c	Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-04-08 08:37:05 -07:00
sched_clock.c
sched_cpupri.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
sched_cpupri.h
sched_debug.c	sched: Fix proc_sched_set_task()	2010-04-02 20:06:40 +02:00
sched_fair.c	sched, rcu: Fix rcu_dereference() for RCU-lockdep	2010-03-01 09:29:58 +01:00
sched_features.h
sched_idletask.c
sched_rt.c	Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-03-13 14:46:18 -08:00
sched_stats.h
seccomp.c
semaphore.c
signal.c
slow-work-debugfs.c	SLOW_WORK: Move slow_work's proc file to debugfs	2009-12-01 08:20:31 -08:00
slow-work.c	slow-work: use get_ref wrapper instead of directly calling get_ref	2010-03-29 09:13:30 -07:00
slow-work.h	SLOW_WORK: CONFIG_SLOW_WORK_PROC should be CONFIG_SLOW_WORK_DEBUG	2010-03-29 09:14:47 -07:00
smp.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
softirq.c
softlockup.c	softlockup: Stop spurious softlockup messages due to overflow	2010-03-21 19:30:13 +01:00
spinlock.c
srcu.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
stacktrace.c	stacktrace: provide save_stack_trace_tsk() weak alias	2008-12-25 11:44:43 +01:00
stop_machine.c
sys.c	kernel/sys.c: fix compat uname machine	2010-04-24 11:31:24 -07:00
sys_ni.c	Add generic sys_ipc wrapper	2010-03-12 15:52:32 -08:00
sysctl.c	sysctl extern cleanup: lockdep	2010-03-12 15:53:10 -08:00
sysctl_binary.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
sysctl_check.c
taskstats.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
test_kprobes.c	kprobes: add tests for register_kprobes	2009-01-06 15:59:20 -08:00
time.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
timeconst.pl
timer.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
tracepoint.c
tsacct.c	mm: clean up mm_counter	2010-03-06 11:26:23 -08:00
uid16.c
up.c
user-return-notifier.c	core: Clean up user return notifers use of per_cpu	2009-12-02 10:22:59 +01:00
user.c	sched: Remove USER_SCHED	2010-01-21 13:40:18 +01:00
user_namespace.c
utsname.c
utsname_sysctl.c
wait.c
workqueue.c