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| author |   Vincent Guittot <vincent.guittot@linaro.org> | 2022-08-25 14:27:24 +0200 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2022-09-15 16:13:51 +0200 |
| commit | c59862f8265f8060b6650ee1dc12159fe5c89779 (patch) | |
| tree | 6fe5febd84cbd2b3b1a9bee929b9e94c7d67160f /kernel/sched/sched.h | |
| parent | sched/fair: Make sure to try to detach at least one movable task (diff) | |
| download | linux-dev-c59862f8265f8060b6650ee1dc12159fe5c89779.tar.xz linux-dev-c59862f8265f8060b6650ee1dc12159fe5c89779.zip | |
sched/fair: Cleanup loop_max and loop_break
sched_nr_migrate_break is set to a fix value and never changes so we can
replace it by a define SCHED_NR_MIGRATE_BREAK.
Also, we adjust SCHED_NR_MIGRATE_BREAK to be aligned with the init value
of sysctl_sched_nr_migrate which can be init to different values.
Then, use SCHED_NR_MIGRATE_BREAK to init sysctl_sched_nr_migrate.
The behavior stays unchanged unless you modify sysctl_sched_nr_migrate
trough debugfs.
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220825122726.20819-3-vincent.guittot@linaro.org
Diffstat (limited to '')
| -rw-r--r-- | kernel/sched/sched.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 91b2c7ec53bd..1fc198be1ffd 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -2423,6 +2423,12 @@ extern void deactivate_task(struct rq *rq, struct task_struct *p, int flags); extern void check_preempt_curr(struct rq *rq, struct task_struct *p, int flags); +#ifdef CONFIG_PREEMPT_RT +#define SCHED_NR_MIGRATE_BREAK 8 +#else +#define SCHED_NR_MIGRATE_BREAK 32 +#endif + extern const_debug unsigned int sysctl_sched_nr_migrate; extern const_debug unsigned int sysctl_sched_migration_cost; |