Mike Galbraith 4036ac1567 sched: Fix clock_gettime(CLOCK_[PROCESS/THREAD]_CPUTIME_ID) monotonicity ...

If a task has been dequeued, it has been accounted.  Do not project
cycles that may or may not ever be accounted to a dequeued task, as
that may make clock_gettime() both inaccurate and non-monotonic.

Protect update_rq_clock() from slight TSC skew while at it.

Signed-off-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: kosaki.motohiro@jp.fujitsu.com
Cc: pjt@google.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1403588980.29711.11.camel@marge.simpson.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2014-07-05 11:17:30 +02:00

..

auto_group.c

sched: Replace hardcoding of -20 and 19 with MIN_NICE and MAX_NICE

2014-02-22 18:15:54 +01:00

auto_group.h

…

clock.c

kernel: use macros from compiler.h instead of __attribute__((...))

2014-04-07 16:36:11 -07:00

completion.c

…

core.c

sched: Fix clock_gettime(CLOCK_[PROCESS/THREAD]_CPUTIME_ID) monotonicity

2014-07-05 11:17:30 +02:00

cpuacct.c

cgroup: remove css_parent()

2014-05-16 13:22:48 -04:00

cpuacct.h

…

cpudeadline.c

sched/deadline: Replace NR_CPUS arrays

2014-05-22 10:21:28 +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: Sanitize irq accounting madness

2014-05-07 11:51:30 +02:00

deadline.c

Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-06-12 19:42:15 -07:00

debug.c

Merge branch 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2014-04-03 13:05:42 -07:00

fair.c

sched: Fix potential near-infinite distribute_cfs_runtime() loop

2014-07-05 11:17:29 +02:00

features.h

sched: Rename capacity related flags

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

idle_task.c

sched/fair: Push down check for high priority class task into idle_balance()

2014-03-11 12:05:37 +01:00

idle.c

sched/idle: Optimize try-to-wake-up IPI

2014-06-05 12:09:53 +02:00

Makefile

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

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

proc.c

…

rt.c

Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-06-12 19:42:15 -07:00

sched.h

nohz: Use IPI implicit full barrier against rq->nr_running r/w

2014-06-16 16:27:24 +02:00

stats.c

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

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

stats.h

…

stop_task.c

sched, nohz: Change rq->nr_running to always use wrappers

2014-05-22 11:16:33 +02:00

wait.c

arch: Mass conversion of smp_mb__*()

2014-04-18 14:20:48 +02:00