diff options
| author | Steve Muckle <smuckle@codeaurora.org> | 2012-09-10 11:45:02 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 19:58:27 -0700 |
| commit | 74b3b06c52411c0ad8de7e5f4194d48e378f7a38 (patch) | |
| tree | 4f93b997f1d63d8dba057d6893093c366f21cb6e /include | |
| parent | 8da8122d5f30badc0463f8c3c05470fa6cb6a32e (diff) | |
sched: add PF_WAKE_UP_IDLE
Certain workloads may benefit from the SD_SHARE_PKG_RESOURCES behavior
of waking their tasks up on idle CPUs. The feature has too much of a
negative impact on other workloads however to apply globally. The
PF_WAKE_UP_IDLE flag tells the scheduler to wake up tasks that have this
flag set, or tasks woken by tasks with this flag set, on an idle CPU
if one is available.
Change-Id: I20b28faf35029f9395e9d9f5ddd57ce2de795039
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
[joonwoop@codeaurora.org: fixed conflict around set_wake_up_idle() in
include/linux/sched.h]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index d8650f5707d3..7c91488f125d 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2069,6 +2069,7 @@ extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, /* * Per process flags */ +#define PF_WAKE_UP_IDLE 0x00000002 /* try to wake up on an idle CPU */ #define PF_EXITING 0x00000004 /* getting shut down */ #define PF_EXITPIDONE 0x00000008 /* pi exit done on shut down */ #define PF_VCPU 0x00000010 /* I'm a virtual CPU */ @@ -2261,6 +2262,14 @@ static inline void calc_load_enter_idle(void) { } static inline void calc_load_exit_idle(void) { } #endif /* CONFIG_NO_HZ_COMMON */ +static inline void set_wake_up_idle(bool enabled) +{ + if (enabled) + current->flags |= PF_WAKE_UP_IDLE; + else + current->flags &= ~PF_WAKE_UP_IDLE; +} + /* * Do not use outside of architecture code which knows its limitations. * |