Andy Lutomirski 170f69f4cf sched: Add missing rcu protection to wake_up_all_idle_cpus ...

commit fd7de1e8d5 upstream.

Locklessly doing is_idle_task(rq->curr) is only okay because of
RCU protection.  The older variant of the broken code checked
rq->curr == rq->idle instead and therefore didn't need RCU.

Fixes: f6be8af1c9 ("sched: Add new API wake_up_if_idle() to wake up the idle cpu")
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Reviewed-by: Chuansheng Liu <chuansheng.liu@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/729365dddca178506dfd0a9451006344cd6808bc.1417277372.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2015-01-16 06:59:54 -08:00

..

auto_group.c

sched: Change autogroup_move_group() to use for_each_thread()

2014-08-20 09:47:18 +02:00

auto_group.h

Revert "sched/autogroup: Fix crash on reboot when autogroup is disabled"

2012-12-11 10:23:45 +01:00

clock.c

time: Replace __get_cpu_var uses

2014-08-26 13:45:44 -04:00

completion.c

sched: Move completion code from core.c to completion.c

2013-11-06 07:49:19 +01:00

core.c

sched: Add missing rcu protection to wake_up_all_idle_cpus

2015-01-16 06:59:54 -08:00

cpuacct.c

cgroup: rename cgroup_subsys->base_cftypes to ->legacy_cftypes

2014-07-15 11:05:09 -04:00

cpuacct.h

sched/cpuacct: Initialize root cpuacct earlier

2013-04-10 13:54:20 +02:00

cpudeadline.c

sched/deadline: Fix inter- exclusive cpusets migrations

2014-09-24 14:46:57 +02:00

cpudeadline.h

sched/deadline: Replace NR_CPUS arrays

2014-05-22 10:21:28 +02:00

cpupri.c

Merge commit '3cf2f34' into sched/core, to fix build error

2014-06-12 13:46:37 +02:00

cpupri.h

sched/cpupri: Replace NR_CPUS arrays

2014-05-22 10:21:29 +02:00

cputime.c

sched, time: Fix build error with 64 bit cputime_t on 32 bit systems

2014-10-03 05:46:55 +02:00

deadline.c

sched/deadline: Avoid double-accounting in case of missed deadlines

2015-01-16 06:59:54 -08:00

debug.c

sched: print_rq(): Don't use tasklist_lock

2014-09-24 14:47:04 +02:00

fair.c

sched/cputime: Fix clock_nanosleep()/clock_gettime() inconsistency

2014-11-16 10:04:20 +01:00

features.h

sched: Rename capacity related flags

2014-06-05 11:52:32 +02:00

idle_task.c

sched: Provide update_curr callbacks for stop/idle scheduling classes

2014-11-23 14:14:40 -08:00

idle.c

sched: Let the scheduler see CPU idle states

2014-09-24 14:46:58 +02:00

Makefile

sched/idle: Move cpu/idle.c to sched/idle.c

2014-02-11 09:58:30 +01:00

proc.c

cpuidle: menu: Lookup CPU runqueues less

2014-08-06 21:17:45 +02:00

rt.c

sched/cputime: Fix clock_nanosleep()/clock_gettime() inconsistency

2014-11-16 10:04:20 +01:00

sched.h

sched/cputime: Fix clock_nanosleep()/clock_gettime() inconsistency

2014-11-16 10:04:20 +01:00

stats.c

kernel: audit/fix non-modular users of module_init in core code

2014-04-03 16:21:07 -07:00

stats.h

sched: Micro-optimize by dropping unnecessary task_rq() calls

2013-09-25 13:51:06 +02:00

stop_task.c

sched: Provide update_curr callbacks for stop/idle scheduling classes

2014-11-23 14:14:40 -08:00

wait.c

SCHED: add some "wait..on_bit...timeout()" interfaces.

2014-09-25 08:23:57 -04:00