Stanislaw Gruszka 68aa8efcd1 sched: Avoid prev->stime underflow ... Dave Hansen reported strange utime/stime values on his system: https://lkml.org/lkml/2013/4/4/435 This happens because prev->stime value is bigger than rtime value. Root of the problem are non-monotonic rtime values (i.e. current rtime is smaller than previous rtime) and that should be debugged and fixed. But since problem did not manifest itself before commit 62188451f0 "cputime: Avoid multiplication overflow on utime scaling", it should be threated as regression, which we can easily fixed on cputime_adjust() function. For now, let's apply this fix, but further work is needed to fix root of the problem. Reported-and-tested-by: Dave Hansen <dave@sr71.net> Cc: <stable@vger.kernel.org> # 3.9+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: rostedt@goodmis.org Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Dave Hansen <dave@sr71.net> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1367314507-9728-3-git-send-email-sgruszka@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2013-04-30 19:13:05 +02:00
..
auto_group.c	sched: split out css_online/css_offline from tg creation/destruction	2013-01-24 12:05:18 -08:00
auto_group.h	Revert "sched/autogroup: Fix crash on reboot when autogroup is disabled"	2012-12-11 10:23:45 +01:00
clock.c
core.c	sched: Rename load_balance_tmpmask to load_balance_mask	2013-04-24 08:52:45 +02:00
cpuacct.c	sched/cpuacct/UML: Fix header file dependency bug on the UML build	2013-04-10 15:12:41 +02:00
cpuacct.h	sched/cpuacct: Initialize root cpuacct earlier	2013-04-10 13:54:20 +02:00
cpupri.c	sched/rt: Move rt specific bits into new header file	2013-02-07 20:51:08 +01:00
cpupri.h
cputime.c	sched: Avoid prev->stime underflow	2013-04-30 19:13:05 +02:00
debug.c	Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-26 19:42:08 -08:00
fair.c	sched: Fix init NOHZ_IDLE flag	2013-04-26 12:13:44 +02:00
features.h	Automatic NUMA Balancing V11	2012-12-16 15:18:08 -08:00
idle_task.c	sched: Fix wrong rq's runnable_avg update with rt tasks	2013-04-21 11:22:52 +02:00
Makefile	sched: Split cpuacct code out of core.c	2013-04-10 13:54:15 +02:00
rt.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 18:19:48 -08:00
sched.h	sched: Fix init NOHZ_IDLE flag	2013-04-26 12:13:44 +02:00
stats.c	sched: Fix /proc/sched_stat failure on very very large systems	2013-02-22 10:27:24 +01:00
stats.h
stop_task.c