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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240716095418.GD26750@noisy.programming.kicks-ass.net>
Date: Tue, 16 Jul 2024 11:54:18 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Yang Yingliang <yangyingliang@...weicloud.com>
Cc: linux-kernel@...r.kernel.org, mingo@...hat.com, 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: Re: [PATCH 0/4] sched/smt: Fix error handling in
 sched_cpu_deactivate()

On Wed, Jul 03, 2024 at 11:16:06AM +0800, Yang Yingliang wrote:
> 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(-)

Thanks!