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| author | Hao Jia <jiahao.os@bytedance.com> | 2023-03-16 11:18:06 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-03-22 12:10:58 +0300 |
| commit | 530bfad1d53d103f98cec66a3e491a36d397884d (patch) | |
| tree | d770ca67d960ed90c160e70f733a430ed0f5b1a6 /kernel/sched/sched.h | |
| parent | d91e15a21d4b3823ce93a42b05f0d171689f4e6a (diff) | |
| download | linux-530bfad1d53d103f98cec66a3e491a36d397884d.tar.xz | |
sched/core: Avoid selecting the task that is throttled to run when core-sched enable
When {rt, cfs}_rq or dl task is throttled, since cookied tasks
are not dequeued from the core tree, So sched_core_find() and
sched_core_next() may return throttled task, which may
cause throttled task to run on the CPU.
So we add checks in sched_core_find() and sched_core_next()
to make sure that the return is a runnable task that is
not throttled.
Co-developed-by: Cruz Zhao <CruzZhao@linux.alibaba.com>
Signed-off-by: Cruz Zhao <CruzZhao@linux.alibaba.com>
Signed-off-by: Hao Jia <jiahao.os@bytedance.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20230316081806.69544-1-jiahao.os@bytedance.com
Diffstat (limited to 'kernel/sched/sched.h')
| -rw-r--r-- | kernel/sched/sched.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 3e8df6d31c1e..060616944d7a 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -2224,6 +2224,10 @@ struct sched_class { #ifdef CONFIG_FAIR_GROUP_SCHED void (*task_change_group)(struct task_struct *p); #endif + +#ifdef CONFIG_SCHED_CORE + int (*task_is_throttled)(struct task_struct *p, int cpu); +#endif }; static inline void put_prev_task(struct rq *rq, struct task_struct *prev) |