Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | Date | Wed, 31 May 2023 13:58:49 +0200 | From | Peter Zijlstra <> | Subject | [PATCH 10/15] sched/fair: Propagate enqueue flags into place_entity() |
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This allows place_entity() to consider ENQUEUE_WAKEUP and ENQUEUE_MIGRATED.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- kernel/sched/fair.c | 10 +++++----- kernel/sched/sched.h | 1 + 2 files changed, 6 insertions(+), 5 deletions(-)
--- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4909,7 +4909,7 @@ static inline void update_misfit_status( #endif /* CONFIG_SMP */ static void -place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial) +place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int flags) { u64 vslice = calc_delta_fair(se->slice, se); u64 vruntime = avg_vruntime(cfs_rq); @@ -4998,7 +4998,7 @@ place_entity(struct cfs_rq *cfs_rq, stru * on average, halfway through their slice, as such start tasks * off with half a slice to ease into the competition. */ - if (sched_feat(PLACE_DEADLINE_INITIAL) && initial) + if (sched_feat(PLACE_DEADLINE_INITIAL) && (flags & ENQUEUE_INITIAL)) vslice /= 2; /* @@ -5021,7 +5021,7 @@ enqueue_entity(struct cfs_rq *cfs_rq, st * update_curr(). */ if (curr) - place_entity(cfs_rq, se, 0); + place_entity(cfs_rq, se, flags); update_curr(cfs_rq); @@ -5048,7 +5048,7 @@ enqueue_entity(struct cfs_rq *cfs_rq, st * we can place the entity. */ if (!curr) - place_entity(cfs_rq, se, 0); + place_entity(cfs_rq, se, flags); account_entity_enqueue(cfs_rq, se); @@ -12053,7 +12053,7 @@ static void task_fork_fair(struct task_s curr = cfs_rq->curr; if (curr) update_curr(cfs_rq); - place_entity(cfs_rq, se, 1); + place_entity(cfs_rq, se, ENQUEUE_INITIAL); rq_unlock(rq, &rf); } --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -2174,6 +2174,7 @@ extern const u32 sched_prio_to_wmult[40 #else #define ENQUEUE_MIGRATED 0x00 #endif +#define ENQUEUE_INITIAL 0x80 #define RETRY_TASK ((void *)-1UL)
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