diff options
| author | Paul Turner <pjt@google.com> | 2011-07-21 09:43:33 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-08-14 12:03:34 +0200 |
| commit | 85dac906bec3bb41bfaa7ccaa65c4706de5cfdf8 (patch) | |
| tree | 5d3f71d409fe002b0dfd2cdfb7ef09a9d5851f66 /kernel/sched.c | |
| parent | a9cf55b2861057a213e610da2fec52125439a11d (diff) | |
sched: Add support for throttling group entities
Now that consumption is tracked (via update_curr()) we add support to throttle
group entities (and their corresponding cfs_rqs) in the case where this is no
run-time remaining.
Throttled entities are dequeued to prevent scheduling, additionally we mark
them as throttled (using cfs_rq->throttled) to prevent them from becoming
re-enqueued until they are unthrottled. A list of a task_group's throttled
entities are maintained on the cfs_bandwidth structure.
Note: While the machinery for throttling is added in this patch the act of
throttling an entity exceeding its bandwidth is deferred until later within
the series.
Signed-off-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110721184757.480608533@google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index a2d55144bd9c..044260a9418d 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -260,6 +260,8 @@ struct cfs_bandwidth { int idle, timer_active; struct hrtimer period_timer; + struct list_head throttled_cfs_rq; + #endif }; @@ -399,6 +401,9 @@ struct cfs_rq { int runtime_enabled; u64 runtime_expires; s64 runtime_remaining; + + int throttled; + struct list_head throttled_list; #endif #endif }; @@ -441,6 +446,7 @@ static void init_cfs_bandwidth(struct cfs_bandwidth *cfs_b) cfs_b->quota = RUNTIME_INF; cfs_b->period = ns_to_ktime(default_cfs_period()); + INIT_LIST_HEAD(&cfs_b->throttled_cfs_rq); hrtimer_init(&cfs_b->period_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); cfs_b->period_timer.function = sched_cfs_period_timer; } @@ -448,6 +454,7 @@ static void init_cfs_bandwidth(struct cfs_bandwidth *cfs_b) static void init_cfs_rq_runtime(struct cfs_rq *cfs_rq) { cfs_rq->runtime_enabled = 0; + INIT_LIST_HEAD(&cfs_rq->throttled_list); } /* requires cfs_b->lock, may release to reprogram timer */ |