From: Yiwei Lin <s921975628@gmail.com>
To: mingo@redhat.com, peterz@infradead.org
Cc: vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
wuyun.abel@bytedance.com, linux-kernel@vger.kernel.org,
s921975628@gmail.com
Subject: [PATCH 0/1] sched/fair: Update min_vruntime in more relaxed way
Date: Thu, 16 Nov 2023 18:54:24 +0800 [thread overview]
Message-ID: <20231116105425.84773-1-s921975628@gmail.com> (raw)
Because we only use min_vruntime as an offset to avoid
overflow, and we will always update_curr() before making
change to csf_rq. Unlike the requirement on CFS, I
think it is possible to just update_min_vruntime() when
update_curr(), which reduces the cost to evaluate the statistic.
It is worth metioning that maybe we can update_min_vruntime() in
a more relaxed form according to this fact, but we may need more
works to optimize in the future.
The following link shows some discussion which relates to this patch:
https://lore.kernel.org/lkml/20231107090510.71322-1-wuyun.abel@bytedance.com/T/#mc277f045367f4186b34c83e636907ce2f5eb481e
Yiwei Lin (1):
sched/fair: Update min_vruntime in more relaxed way
kernel/sched/fair.c | 20 +-------------------
1 file changed, 1 insertion(+), 19 deletions(-)
--
2.34.1
next reply other threads:[~2023-11-16 10:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-16 10:54 Yiwei Lin [this message]
2023-11-16 10:54 ` [PATCH 1/1] " Yiwei Lin
2023-11-16 11:16 ` Abel Wu
2023-11-16 11:33 ` Yiwei Lin
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