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SubjectRe: [PATCH v3 0/4] Fix some warnings about rq clock
From
kindly ping...


On 2023/5/15 Hao Jia wrote:
> These four patches fix some warnings about rq clock.
>
> Patch1 fixes the warning of using the old rq clock caused by
> missing update rq clock.
>
> Patch2-4 fixes the warning that the rq clock was updated multiple
> times while holding the rq lock.
>
> v2->v3:
> - Modify the commit information of patch1 to make the description clearer.
> - Split v2 patch2 into 3 separate patches.
>
> v1->v2:
> - Vincent Guittot suggested using rq_clock_start_loop_update()
> to prevent multiple calls to update_rq_clock() in unthrottle_cfs_rq()
> instead of removing update_rq_clock() from unthrottle_cfs_rq()
> and updating the rq clock before unthrottle_cfs_rq() for patch2.
>
> [v2] https://lore.kernel.org/all/20230510083450.62334-1-jiahao.os@bytedance.com
> [v1] https://lore.kernel.org/all/20230410081206.23441-1-jiahao.os@bytedance.com
>
>
> Hao Jia (4):
> sched/core: Fixed missing rq clock update before calling
> set_rq_offline()
> sched/core: Avoid double calling update_rq_clock() in
> __balance_push_cpu_stop()
> sched/core: Avoid multiple calling update_rq_clock() in
> __cfsb_csd_unthrottle()
> sched/core: Avoid multiple calling update_rq_clock() in
> unthrottle_offline_cfs_rqs()
>
> kernel/sched/core.c | 7 ++++---
> kernel/sched/fair.c | 18 ++++++++++++++++++
> kernel/sched/sched.h | 21 +++++++++++++++++++++
> kernel/sched/topology.c | 10 ++++++----
> 4 files changed, 49 insertions(+), 7 deletions(-)
>

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