diff options
| author | Morten Rasmussen <morten.rasmussen@arm.com> | 2016-06-22 18:03:14 +0100 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-13 12:32:12 +0200 |
| commit | 9f45e41f9d743ed65dd5379e0af4d643d6a710aa (patch) | |
| tree | 5d073ee750a67c3dd0821985bab7bd54bcbcd6ac /kernel/timer.c | |
| parent | 662287558f37ed46e0612a34d5e58b89f6af3a48 (diff) | |
sched/fair: Optimize find_idlest_cpu() when there is no choice
In the current find_idlest_group()/find_idlest_cpu() search we end up
calling find_idlest_cpu() in a sched_group containing only one CPU in
the end. Checking idle-states becomes pointless when there is no
alternative, so bail out instead.
Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dietmar.eggemann@arm.com
Cc: linux-kernel@vger.kernel.org
Cc: mgalbraith@suse.de
Cc: vincent.guittot@linaro.org
Cc: yuyang.du@intel.com
Link: http://lkml.kernel.org/r/1466615004-3503-4-git-send-email-morten.rasmussen@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: RyTek <rytek1128@outlook.com>
Diffstat (limited to 'kernel/timer.c')
0 files changed, 0 insertions, 0 deletions