linux-kernel - [PATCH V3 0/2] sched: Align uclamp and util

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Message-ID: <20250417043457.10632-1-xuewen.yan@unisoc.com>
Date: Thu, 17 Apr 2025 12:34:55 +0800
From: Xuewen Yan <xuewen.yan@...soc.com>
To: <vincent.guittot@...aro.org>, <dietmar.eggemann@....com>,
        <mingo@...hat.com>, <peterz@...radead.org>, <juri.lelli@...hat.com>
CC: <rostedt@...dmis.org>, <bsegall@...gle.com>, <mgorman@...e.de>,
        <vschneid@...hat.com>, <hongyan.xia2@....com>,
        <linux-kernel@...r.kernel.org>, <ke.wang@...soc.com>,
        <di.shen@...soc.com>, <xuewen.yan94@...il.com>,
        <kprateek.nayak@....com>, <kuyo.chang@...iatek.com>,
        <juju.sung@...iatek.com>, <qyousef@...alina.io>
Subject: [PATCH V3 0/2] sched: Align uclamp and util_est

Now, both uclamp and util_est have been adapted for DELAYED_DEQUEUE,
and the double enqueue/dequeue issue no longer exists.
However, there is still room for optimization in both uclamp and util_est.
Previous discussions as following:
https://lore.kernel.org/all/CAB8ipk8pEvOtCm-d0o1rsekwxPWUHk9iBGtt9TLTWW-iWTQKiA@mail.gmail.com/
https://lore.kernel.org/all/84441660bef0a5e67fd09dc3787178d0276dad31.1740664400.git.hongyan.xia2@arm.com/T/#u
https://lore.kernel.org/all/CAB8ipk9LpbiUDnbcV6+59+Sa=Ai7tFzO===mpLD3obNdV4=J-A@mail.gmail.com/T/#u
https://lore.kernel.org/all/aa8baf67-a8ec-4ad8-a6a8-afdcd7036771@arm.com/
https://lore.kernel.org/all/20250325014733.18405-1-xuewen.yan@unisoc.com/

patch[1]: Simply the condition for util_est_dequeue/enqueue; 
patch[2] aligns uclamp and util_est and call before freq update to improve
the performance and power.

Xuewen Yan (2):
  sched/util_est: Simply the condition for util_est_dequeue/enqueue
  sched/uclamp: Align uclamp and util_est and call before freq update

 kernel/sched/core.c | 17 ++++++++++-------
 kernel/sched/fair.c |  4 ++--
 2 files changed, 12 insertions(+), 9 deletions(-)

---
v3:
- split previous patch in 2 patches.

v2:
- simply the util-est's en/dequeue check;
---
-- 
2.25.1