Re: [PATCH sched_ext/for-6.19] sched_ext: Pass locked CPU parameter to scx_hardlockup() and add docs

[Doug Anderson]

Hi,

On Thu, Nov 13, 2025 at 5:33 PM Tejun Heo <tj@xxxxxxxxxx> wrote:
>
> With the buddy lockup detector, smp_processor_id() returns the detecting CPU,
> not the locked CPU, making scx_hardlockup()'s printouts confusing. Pass the
> locked CPU number from watchdog_hardlockup_check() as a parameter instead.
>
> Also add kerneldoc comments to handle_lockup(), scx_hardlockup(), and
> scx_rcu_cpu_stall() documenting their return value semantics.
>
> Suggested-by: Doug Anderson <dianders@xxxxxxxxxxxx>
> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
> ---
>  include/linux/sched/ext.h |    4 ++--
>  kernel/sched/ext.c        |   25 ++++++++++++++++++++++---
>  kernel/watchdog.c         |    2 +-
>  3 files changed, 25 insertions(+), 6 deletions(-)

Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>