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From: Kayra Cizmeci <kayracizmeci@gmail.com>
To: Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
	Valentin Schneider <vschneid@redhat.com>,
	K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kayra Cizmeci <kayracizmeci@gmail.com>, linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] sched/fair: reuse the ENQUEUE_DELAYED calculation in enqueue_task_fair()
Date: Mon, 24 Aug 2026 15:52:20 +0300	[thread overview]
Message-ID: <20260824125223.508178-1-kayracizmeci@gmail.com> (raw)

Currently flags & ENQUEUE_DELAYED checks spread throughout the
enqueue_task_fair(), connect these checks to a bool 'delayed' that
gets calculated at the start of the function.

No functional change intended.

Signed-off-by: Kayra Cizmeci <kayracizmeci@gmail.com>
---
 kernel/sched/fair.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6d881e530f89..b411384125ec 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -7985,7 +7985,7 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags)
 	struct sched_entity *se = &p->se;
 	struct cfs_rq *cfs_rq = &rq->cfs;
 	unsigned long weight;
-	bool curr;
+	bool curr, delayed = (flags & ENQUEUE_DELAYED);
 
 	if (task_is_throttled(p) && enqueue_throttled_task(p))
 		return;
@@ -7996,12 +7996,12 @@ enqueue_task_fair(struct rq *rq, struct task_struct *p, int flags)
 	 * Let's add the task's estimated utilization to the cfs_rq's
 	 * estimated utilization, before we update schedutil.
 	 */
-	if (!p->se.sched_delayed || (flags & ENQUEUE_DELAYED))
+	if (!p->se.sched_delayed || delayed)
 		util_est_enqueue(cfs_rq, p);
 
 	update_curr_eevdf(cfs_rq);
 
-	if (flags & ENQUEUE_DELAYED) {
+	if (delayed) {
 		requeue_delayed_entity(cfs_rq, se);
 		return;
 	}
-- 
2.53.0


             reply	other threads:[~2026-08-24 12:52 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-24 12:52 Kayra Cizmeci [this message]
2026-08-24 12:52 ` [PATCH 2/2] sched/fair: avoid recalculating curr status in place_entity() and requeue_delayed_entity() Kayra Cizmeci
2026-08-26 10:15 ` [PATCH v2 0/2] sched/fair: reduce repeated work in enqueue path Kayra Cizmeci
2026-08-26 10:15   ` [PATCH v2 1/2] sched/fair: reuse the ENQUEUE_DELAYED calculation in enqueue_task_fair() Kayra Cizmeci
2026-08-26 10:41     ` K Prateek Nayak
2026-08-26 10:15   ` [PATCH v2 2/2] sched/fair: avoid recalculating curr status in place_entity() and requeue_delayed_entity() Kayra Cizmeci

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