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| author | Srivatsa Vaddagiri <vatsa@codeaurora.org> | 2015-01-06 15:36:28 +0530 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:01:33 -0700 |
| commit | 207d78dd263114ccf6e04581f43e4dc99e7b068d (patch) | |
| tree | 848853dc9722d1476e79fd362e75b3fa1d5777b4 /kernel/sched/core.c | |
| parent | b0ccf5db311522b91cb770ce4c245a3f029b4ad5 (diff) | |
sched: Add userspace interface to set PF_WAKE_UP_IDLE
sched_prefer_idle flag controls whether tasks can be woken to any
available idle cpu. It may be desirable to set sched_prefer_idle to 0
so that most tasks wake up to non-idle cpus under mostly_idle
threshold and have specialized tasks override this behavior through
other means. PF_WAKE_UP_IDLE flag per task provides exactly that. It
lets tasks with PF_WAKE_UP_IDLE flag set be woken up to any available
idle cpu independent of sched_prefer_idle flag setting. Currently
only kernel-space API exists to set PF_WAKE_UP_IDLE flag for a task.
This patch adds a user-space API (in /proc filesystem) to set
PF_WAKE_UP_IDLE flag for a given task. /proc/[pid]/sched_wake_up_idle
file can be written to set or clear PF_WAKE_UP_IDLE flag for a given
task.
Change-Id: I13a37e740195e503f457ebe291d54e83b230fbeb
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
[rameezmustafa@codeaurora.org: Port to msm-3.18]
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
[joonwoop@codeaurora.org: fixed minor conflict in kernel/sched/fair.c]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Diffstat (limited to 'kernel/sched/core.c')
0 files changed, 0 insertions, 0 deletions