From: Vincent Guittot <vincent.guittot@linaro.org>
To: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com,
dietmar.eggemann@arm.com, rostedt@goodmis.org,
bsegall@google.com, mgorman@suse.de, bristot@redhat.com,
vschneid@redhat.com, linux-kernel@vger.kernel.org,
parth@linux.ibm.com
Cc: qyousef@layalina.io, chris.hyser@oracle.com,
patrick.bellasi@matbug.net, David.Laight@aculab.com,
pjt@google.com, pavel@ucw.cz, tj@kernel.org, qperret@google.com,
tim.c.chen@linux.intel.com, joshdon@google.com, timj@gnu.org,
kprateek.nayak@amd.com, yu.c.chen@intel.com,
youssefesmat@chromium.org, joel@joelfernandes.org,
Vincent Guittot <vincent.guittot@linaro.org>
Subject: [PATCH v9 7/9] sched/core: Support latency priority with sched core
Date: Tue, 15 Nov 2022 18:18:49 +0100 [thread overview]
Message-ID: <20221115171851.835-8-vincent.guittot@linaro.org> (raw)
In-Reply-To: <20221115171851.835-1-vincent.guittot@linaro.org>
Take into account wakeup_latency_gran() when ordering the cfs threads.
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
---
kernel/sched/fair.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 75c0a8d203c3..be446dc58be7 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -11833,6 +11833,9 @@ bool cfs_prio_less(struct task_struct *a, struct task_struct *b, bool in_fi)
delta = (s64)(sea->vruntime - seb->vruntime) +
(s64)(cfs_rqb->min_vruntime_fi - cfs_rqa->min_vruntime_fi);
+ /* Take into account latency prio */
+ delta -= wakeup_latency_gran(sea, seb);
+
return delta > 0;
}
#else
--
2.17.1
next prev parent reply other threads:[~2022-11-15 17:20 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-15 17:18 [PATCH v9 0/9] Add latency priority for CFS class Vincent Guittot
2022-11-15 17:18 ` [PATCH v9 1/9] sched/fair: fix unfairness at wakeup Vincent Guittot
2022-11-15 17:18 ` [PATCH v9 2/9] sched: Introduce latency-nice as a per-task attribute Vincent Guittot
2022-11-15 17:18 ` [PATCH v9 3/9] sched/core: Propagate parent task's latency requirements to the child task Vincent Guittot
2022-11-15 17:18 ` [PATCH v9 4/9] sched: Allow sched_{get,set}attr to change latency_nice of the task Vincent Guittot
2022-11-15 17:18 ` [PATCH 5/9] sched/fair: Take into account latency priority at wakeup Vincent Guittot
2022-11-29 4:25 ` Joel Fernandes
2022-11-29 8:58 ` Vincent Guittot
2022-11-29 15:45 ` Joel Fernandes
2022-11-29 17:20 ` Vincent Guittot
2022-11-30 3:09 ` Joel Fernandes
2022-11-30 13:42 ` Vincent Guittot
2022-11-15 17:18 ` [PATCH v9 6/9] sched/fair: Add sched group latency support Vincent Guittot
2022-11-15 17:18 ` Vincent Guittot [this message]
2022-11-15 17:18 ` [PATCH v9 8/9] sched/fair: Add latency list Vincent Guittot
2022-11-15 17:18 ` [PATCH v9 9/9] sched/fair: remove check_preempt_from_others Vincent Guittot
2022-11-28 11:51 ` [PATCH v9 0/9] Add latency priority for CFS class K Prateek Nayak
2022-11-28 17:19 ` Vincent Guittot
2022-12-07 16:26 ` K Prateek Nayak
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