Re: [PATCH 0/4] sched/smt: Fix error handling in sched_cpu_deactivate()
From: Peter Zijlstra
Date: Tue Jul 16 2024 - 05:54:47 EST
On Wed, Jul 03, 2024 at 11:16:06AM +0800, Yang Yingliang wrote:
> From: Yang Yingliang <yangyingliang@xxxxxxxxxx>
>
> 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!