linux-kernel - [PATCH 0/4] sched/smt: Fix error handling in sched_cpu

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Message-Id: <20240703031610.587047-1-yangyingliang@huaweicloud.com>
Date: Wed,  3 Jul 2024 11:16:06 +0800
From: Yang Yingliang <yangyingliang@...weicloud.com>
To: linux-kernel@...r.kernel.org
Cc: mingo@...hat.com,
	peterz@...radead.org,
	juri.lelli@...hat.com,
	vincent.guittot@...aro.org,
	dietmar.eggemann@....com,
	rostedt@...dmis.org,
	bsegall@...gle.com,
	mgorman@...e.de,
	bristot@...hat.com,
	vschneid@...hat.com,
	tglx@...utronix.de,
	yu.c.chen@...el.com,
	tim.c.chen@...ux.intel.com,
	yangyingliang@...wei.com,
	liwei391@...wei.com
Subject: [PATCH 0/4] sched/smt: Fix error handling in sched_cpu_deactivate()

From: Yang Yingliang <yangyingliang@...wei.com>

sched_smt_present decrement and set_rq_offline() is called before
cpuset_cpu_inactive(), if cpuset_cpu_inactive() fails, these two
things need be rollback.

Yang Yingliang (4):
  sched/smt: Introduce sched_smt_present_inc/dec() helper
  sched/smt: fix unbalance sched_smt_present dec/inc
  sched/core: Introduce sched_set_rq_on/offline() helper
  sched/core: fix unbalance set_rq_online/offline() in
    sched_cpu_deactivate()

 kernel/sched/core.c | 68 +++++++++++++++++++++++++++++++--------------
 1 file changed, 47 insertions(+), 21 deletions(-)

-- 
2.25.1