linux/kernel/sched
Zhu Yanhai 1836cd1761 sched: Fix the broken sched_rr_get_interval()
commit a59f4e079d upstream.

The caller of sched_sliced() should pass se.cfs_rq and se as the
arguments, however in sched_rr_get_interval() we gave it
rq.cfs_rq and se, which made the following computation obviously
wrong.

The change was introduced by commit:

  77034937dc sched: fix crash in sys_sched_rr_get_interval()

... 5 years ago, while it had been the correct 'cfs_rq_of' before
the commit. The change seems to be irrelevant to the commit
msg, which was to return a 0 timeslice for tasks that are on an
idle runqueue. So I believe that was just a plain typo.

Signed-off-by: Zhu Yanhai <gaoyang.zyh@taobao.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Turner <pjt@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1357621012-15039-1-git-send-email-gaoyang.zyh@taobao.com
[ Since this is an ABI and an old bug, we'll test this via a
  slow upstream route, to hopefully discover any app breakage. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-11 15:38:43 -07:00
..
auto_group.c Revert "sched, autogroup: Stop going ahead if autogroup is disabled" 2012-12-10 10:59:40 -08:00
auto_group.h Revert "sched, autogroup: Stop going ahead if autogroup is disabled" 2012-12-10 10:59:40 -08:00
clock.c sched_clock: Prevent 64bit inatomicity on 32bit systems 2013-04-16 21:27:27 -07:00
core.c sched: Convert BUG_ON()s in try_to_wake_up_local() to WARN_ON_ONCE()s 2013-04-25 21:19:55 -07:00
cpupri.c kernel-doc: fix kernel-doc warnings in sched 2012-01-23 08:44:54 -08:00
cpupri.h
debug.c sched: Remove sched_switch 2012-01-27 13:28:53 +01:00
fair.c sched: Fix the broken sched_rr_get_interval() 2013-08-11 15:38:43 -07:00
features.h sched: Fix more load-balancing fallout 2012-04-26 12:54:52 +02:00
idle_task.c sched/nohz: Rewrite and fix load-avg computation -- again 2012-07-19 08:58:56 -07:00
Makefile
rt.c sched/rt: Use root_domain of rt_rq not current processor 2013-02-11 08:47:18 -08:00
sched.h sched: Fix race in task_group() 2012-10-02 10:30:35 -07:00
stats.c sched: Remove sched_switch 2012-01-27 13:28:53 +01:00
stats.h
stop_task.c sched: Fix migration thread runtime bogosity 2012-10-13 05:39:01 +09:00