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| author | Peter Zijlstra <peterz@infradead.org> | 2021-03-25 13:44:46 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-04-16 17:06:35 +0200 |
| commit | 0c2de3f054a59f15e01804b75a04355c48de628c (patch) | |
| tree | cacb2c2f2ad3711dac0212cc31dbdbedda6552f2 /kernel/sched/features.h | |
| parent | d27e9ae2f244805bbdc730d85fba28685d2471e5 (diff) | |
| download | linux-0c2de3f054a59f15e01804b75a04355c48de628c.tar.bz2 | |
sched,fair: Alternative sched_slice()
The current sched_slice() seems to have issues; there's two possible
things that could be improved:
- the 'nr_running' used for __sched_period() is daft when cgroups are
considered. Using the RQ wide h_nr_running seems like a much more
consistent number.
- (esp) cgroups can slice it real fine, which makes for easy
over-scheduling, ensure min_gran is what the name says.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Valentin Schneider <valentin.schneider@arm.com>
Link: https://lkml.kernel.org/r/20210412102001.611897312@infradead.org
Diffstat (limited to 'kernel/sched/features.h')
| -rw-r--r-- | kernel/sched/features.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 422fa68c0ee9..011c5ec7b7b5 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -90,3 +90,6 @@ SCHED_FEAT(WA_BIAS, true) */ SCHED_FEAT(UTIL_EST, true) SCHED_FEAT(UTIL_EST_FASTUP, true) + +SCHED_FEAT(ALT_PERIOD, true) +SCHED_FEAT(BASE_SLICE, true) |