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sched: Account number of SCHED_IDLE entities on each cfs_rq

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Adds cfs_rq->idle_nr_running, which accounts the number of idle entities
directly enqueued on the cfs_rq.

Signed-off-by: Josh Don <joshdon@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20210820010403.946838-3-joshdon@google.com
This commit is contained in:
Josh Don
2021-08-19 18:04:01 -07:00
committed by Peter Zijlstra
parent a130e8fbc7
commit a480addecc
3 changed files with 27 additions and 1 deletions
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kernel/sched/sched.h
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@@ -530,6 +530,7 @@ struct cfs_rq {
struct load_weight load;
unsigned int nr_running;
unsigned int h_nr_running; /* SCHED_{NORMAL,BATCH,IDLE} */
unsigned int idle_nr_running; /* SCHED_IDLE */
unsigned int idle_h_nr_running; /* SCHED_IDLE */
u64 exec_clock;