Peter Zijlstra de212f18e9 sched/deadline: Fix hotplug admission control ...

The current hotplug admission control is broken because:

  CPU_DYING -> migration_call() -> migrate_tasks() -> __migrate_task()

cannot fail and hard assumes it _will_ move all tasks off of the dying
cpu, failing this will break hotplug.

The much simpler solution is a DOWN_PREPARE handler that fails when
removing one CPU gets us below the total allocated bandwidth.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20131220171343.GL2480@laptop.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2014-01-13 13:47:25 +01:00

..

auto_group.c

sched/autogroup: Fix race with task_groups list

2013-05-28 09:40:22 +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

sched_clock: Prevent 64bit inatomicity on 32bit systems

2013-04-08 11:50:44 +02:00

completion.c

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

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

core.c

sched/deadline: Fix hotplug admission control

2014-01-13 13:47:25 +01:00

cpuacct.c

cgroup: pass around cgroup_subsys_state instead of cgroup in file methods

2013-08-08 20:11:24 -04:00

cpuacct.h

sched/cpuacct: Initialize root cpuacct earlier

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

cpudeadline.c

sched/deadline: speed up SCHED_DEADLINE pushes with a push-heap

2014-01-13 13:46:46 +01:00

cpudeadline.h

sched/deadline: speed up SCHED_DEADLINE pushes with a push-heap

2014-01-13 13:46:46 +01:00

cpupri.c

sched: Fix some kernel-doc warnings

2013-07-18 09:58:21 +02:00

cpupri.h

sched: Move all scheduler bits into kernel/sched/

2011-11-17 12:20:22 +01:00

cputime.c

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

2013-09-05 12:36:46 -07:00

deadline.c

sched/deadline: Remove the sysctl_sched_dl knobs

2014-01-13 13:47:23 +01:00

debug.c

sched/numa: Use wrapper function task_node to get node which task is on

2013-12-17 15:24:39 +01:00

fair.c

Merge branch 'sched/urgent' into sched/core

2014-01-13 13:35:28 +01:00

features.h

sched/numa: Resist moving tasks towards nodes with fewer hinting faults

2013-10-09 12:40:27 +02:00

idle_task.c

sched/numa: Introduce migrate_swap()

2013-10-09 12:40:46 +02:00

Makefile

sched/deadline: speed up SCHED_DEADLINE pushes with a push-heap

2014-01-13 13:46:46 +01:00

proc.c

sched: Change get_rq_runnable_load() to static and inline

2013-06-27 10:07:44 +02:00

rt.c

sched/deadline: Add SCHED_DEADLINE SMP-related data structures & logic

2014-01-13 13:41:07 +01:00

sched.h

sched/deadline: Remove the sysctl_sched_dl knobs

2014-01-13 13:47:23 +01:00

stats.c

fix a leak in /proc/schedstats

2013-04-29 15:41:45 -04:00

stats.h

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

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

stop_task.c

sched/deadline: Add SCHED_DEADLINE structures & implementation

2014-01-13 13:41:06 +01:00

wait.c

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

2013-11-06 07:49:18 +01:00