linux-stable-rt/kernel
Oleg Nesterov f53ae1dc34 [PATCH] arm_timer: remove a racy and obsolete PF_EXITING check
arm_timer() checks PF_EXITING to prevent BUG_ON(->exit_state)
in run_posix_cpu_timers().

However, for some reason it does so only for CPUCLOCK_PERTHREAD
case (which is imho wrong).

Also, this check is not reliable, PF_EXITING could be set on
another cpu without any locks/barriers just after the check,
so it can't prevent from attaching the timer to the exiting
task.

The previous patch makes this check unneeded.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-17 10:52:13 -07:00
..
irq [PATCH] request_irq(): remove warnings from irq probing 2006-04-28 08:33:46 -07:00
power
.gitignore
Kconfig.hz
Kconfig.preempt
Makefile
acct.c
audit.c [PATCH] More user space subject labels 2006-05-01 06:10:01 -04:00
audit.h [PATCH] support for context based audit filtering, part 2 2006-05-01 06:09:36 -04:00
auditfilter.c [PATCH] More user space subject labels 2006-05-01 06:10:01 -04:00
auditsc.c [PATCH] Audit Filter Performance 2006-05-01 06:10:07 -04:00
capability.c
compat.c
configs.c
cpu.c
cpuset.c [PATCH] cpuset: might_sleep_if check in cpuset_zones_allowed 2006-05-21 12:59:18 -07:00
dma.c
exec_domain.c
exit.c [PATCH] run_posix_cpu_timers: remove a bogus BUG_ON() 2006-06-17 10:52:13 -07:00
extable.c [PATCH] symbol_put_addr() locks kernel 2006-05-15 11:20:55 -07:00
fork.c [PATCH] move call of audit_free() into do_exit() 2006-05-01 06:06:13 -04:00
futex.c
futex_compat.c
hrtimer.c [PATCH] hrtimer: export symbols 2006-05-31 16:27:11 -07:00
intermodule.c
itimer.c
kallsyms.c
kexec.c
kfifo.c
kmod.c
kprobes.c
ksysfs.c
kthread.c
module.c [PATCH] symbol_put_addr() locks kernel 2006-05-15 11:20:55 -07:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
panic.c
params.c
pid.c
posix-cpu-timers.c [PATCH] arm_timer: remove a racy and obsolete PF_EXITING check 2006-06-17 10:52:13 -07:00
posix-timers.c
printk.c
profile.c
ptrace.c ptrace_attach: fix possible deadlock schenario with irqs 2006-05-11 11:08:49 -07:00
rcupdate.c [PATCH] RCU: introduce rcu_needs_cpu() interface 2006-05-15 11:20:55 -07:00
rcutorture.c
relay.c
resource.c
sched.c Revert "[PATCH] sched: fix interactive task starvation" 2006-05-21 18:54:09 -07:00
seccomp.c
signal.c
softirq.c
softlockup.c
spinlock.c
stop_machine.c
sys.c
sys_ni.c
sysctl.c
time.c
timer.c [PATCH] Fix a NO_IDLE_HZ timer bug 2006-05-21 12:59:21 -07:00
uid16.c
user.c
wait.c
workqueue.c