mbox series

[v3,0/4] Fix some warnings about rq clock

Message ID 20230515063848.77947-1-jiahao.os@bytedance.com
Headers
Series Fix some warnings about rq clock |

Message

Hao Jia May 15, 2023, 6:38 a.m. UTC 
  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(-)

Comments

Hao Jia May 23, 2023, 7:52 a.m. UTC | #1 
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(-)
>
Hao Jia June 1, 2023, 9:14 a.m. UTC | #2 
Kindly ping, any comment?

Thanks,
Hao

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(-)
>