From: Shrikanth Hegde <sshegde@linux.ibm.com>
To: peterz@infradead.org, juri.lelli@redhat.com, mingo@redhat.com,
vincent.guittot@linaro.org
Cc: sshegde@linux.ibm.com, linux-kernel@vger.kernel.org,
rostedt@goodmis.org, dietmar.eggemann@arm.com, nico@fluxnic.net
Subject: [PATCH 1/2] sched/deadline: minor code cleanups
Date: Tue, 14 Oct 2025 15:33:41 +0530 [thread overview]
Message-ID: <20251014100342.978936-2-sshegde@linux.ibm.com> (raw)
In-Reply-To: <20251014100342.978936-1-sshegde@linux.ibm.com>
- In dl_server_timer, there is same dl_runtime check above. So
this check is duplicate. This could save a few cycles.
- In select_task_rq_dl, there is only one goto statement, there is
no need for it.
No functional changes.
Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
---
kernel/sched/deadline.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 7b7671060bf9..8b7c4ee41fd8 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1166,9 +1166,6 @@ static enum hrtimer_restart dl_server_timer(struct hrtimer *timer, struct sched_
sched_clock_tick();
update_rq_clock(rq);
- if (!dl_se->dl_runtime)
- return HRTIMER_NORESTART;
-
if (dl_se->dl_defer_armed) {
/*
* First check if the server could consume runtime in background.
@@ -2173,7 +2170,7 @@ select_task_rq_dl(struct task_struct *p, int cpu, int flags)
struct rq *rq;
if (!(flags & WF_TTWU))
- goto out;
+ return cpu;
rq = cpu_rq(cpu);
@@ -2211,7 +2208,6 @@ select_task_rq_dl(struct task_struct *p, int cpu, int flags)
}
rcu_read_unlock();
-out:
return cpu;
}
--
2.47.3
next prev parent reply other threads:[~2025-10-14 10:04 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-14 10:03 [PATCH 0/2] sched/deadline: minor code cleanups Shrikanth Hegde
2025-10-14 10:03 ` Shrikanth Hegde [this message]
2025-11-10 14:10 ` [PATCH 1/2] " Peter Zijlstra
2025-11-10 14:17 ` Peter Zijlstra
2025-11-11 11:37 ` [tip: sched/core] sched/deadline: Minor cleanup in select_task_rq_dl() tip-bot2 for Shrikanth Hegde
2025-11-11 16:33 ` tip-bot2 for Shrikanth Hegde
2025-10-14 10:03 ` [PATCH 2/2] sched/deadline: Use cpumask_weight_and in dl_bw_cpus Shrikanth Hegde
2025-11-10 14:11 ` Peter Zijlstra
2025-11-11 11:37 ` [tip: sched/core] sched/deadline: Use cpumask_weight_and() " tip-bot2 for Shrikanth Hegde
2025-11-11 16:33 ` tip-bot2 for Shrikanth Hegde
2025-10-15 8:41 ` [PATCH 0/2] sched/deadline: minor code cleanups Juri Lelli
2025-11-10 8:25 ` Shrikanth Hegde
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