diff options
| author | Tejun Heo <tj@kernel.org> | 2025-11-13 15:33:41 -1000 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2025-11-14 11:11:08 -1000 |
| commit | 1dcb98bbb7538d4b9015d47c934acdf5ea86045c (patch) | |
| tree | cd4da847a8bd58897113dcfcd6335030e0c338a1 /include/linux/sched/ext.h | |
| parent | 67932f691895294a95861571b0ca69a38e0a4894 (diff) | |
sched_ext: Pass locked CPU parameter to scx_hardlockup() and add docs
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@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Andrea Righi <arighi@nvidia.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/sched/ext.h')
| -rw-r--r-- | include/linux/sched/ext.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/sched/ext.h b/include/linux/sched/ext.h index 70ee5c28a74d..bcb962d5ee7d 100644 --- a/include/linux/sched/ext.h +++ b/include/linux/sched/ext.h @@ -230,7 +230,7 @@ struct sched_ext_entity { void sched_ext_dead(struct task_struct *p); void print_scx_info(const char *log_lvl, struct task_struct *p); void scx_softlockup(u32 dur_s); -bool scx_hardlockup(void); +bool scx_hardlockup(int cpu); bool scx_rcu_cpu_stall(void); #else /* !CONFIG_SCHED_CLASS_EXT */ @@ -238,7 +238,7 @@ bool scx_rcu_cpu_stall(void); static inline void sched_ext_dead(struct task_struct *p) {} static inline void print_scx_info(const char *log_lvl, struct task_struct *p) {} static inline void scx_softlockup(u32 dur_s) {} -static inline bool scx_hardlockup(void) { return false; } +static inline bool scx_hardlockup(int cpu) { return false; } static inline bool scx_rcu_cpu_stall(void) { return false; } #endif /* CONFIG_SCHED_CLASS_EXT */ |