Oleg Nesterov e2336f6e51 sched: Kill task_preempt_count() ...

task_preempt_count() is pointless if preemption counter is per-cpu,
currently this is x86 only. It is only valid if the task is not
running, and even in this case the only info it can provide is the
state of PREEMPT_ACTIVE bit.

Change its single caller to check p->on_rq instead, this should be
the same if p->state != TASK_RUNNING, and kill this helper.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Kirill Tkhai <tkhai@yandex.ru>
Cc: Alexander Graf <agraf@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Lameter <cl@linux.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-arch@vger.kernel.org
Link: http://lkml.kernel.org/r/20141008183348.GC17495@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2014-10-28 10:47:56 +01:00

..

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: Kill task_preempt_count()

2014-10-28 10:47:56 +01:00

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/dl: Fix preemption checks

2014-10-28 10:46:10 +01:00

debug.c

sched: print_rq(): Don't use tasklist_lock

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

fair.c

sched/numa: Check all nodes when placing a pseudo-interleaved group

2014-10-28 10:47:52 +01:00

features.h

sched: Rename capacity related flags

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

idle_task.c

sched: Transform resched_task() into resched_curr()

2014-07-16 13:38:19 +02:00

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

Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2014-10-15 07:48:18 +02:00

sched.h

sched/numa: Classify the NUMA topology of a system

2014-10-28 10:47:48 +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: Add wrapper for checking task_struct::on_rq

2014-08-20 14:52:59 +02:00

wait.c

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

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