diff options
| author | Dave Airlie <airlied@redhat.com> | 2025-11-21 08:55:08 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2025-11-21 08:55:08 +1000 |
| commit | ce0478b02ed29465c1de3d03c3eea721355f9d2d (patch) | |
| tree | 79a94d382aa793b762cd974f97fdfa575f603639 /include/linux/hung_task.h | |
| parent | f0ded972d37150f9f889de75c9eecc5cb0730013 (diff) | |
| parent | 6a23ae0a96a600d1d12557add110e0bb6e32730c (diff) | |
Merge tag 'v6.18-rc6' into drm-next
Linux 6.18-rc6
Backmerge in order to merge msm next
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/linux/hung_task.h')
| -rw-r--r-- | include/linux/hung_task.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/hung_task.h b/include/linux/hung_task.h index 34e615c76ca5..c4403eeb7144 100644 --- a/include/linux/hung_task.h +++ b/include/linux/hung_task.h @@ -20,6 +20,10 @@ * always zero. So we can use these bits to encode the specific blocking * type. * + * Note that on architectures where this is not guaranteed, or for any + * unaligned lock, this tracking mechanism is silently skipped for that + * lock. + * * Type encoding: * 00 - Blocked on mutex (BLOCKER_TYPE_MUTEX) * 01 - Blocked on semaphore (BLOCKER_TYPE_SEM) @@ -45,7 +49,7 @@ static inline void hung_task_set_blocker(void *lock, unsigned long type) * If the lock pointer matches the BLOCKER_TYPE_MASK, return * without writing anything. */ - if (WARN_ON_ONCE(lock_ptr & BLOCKER_TYPE_MASK)) + if (lock_ptr & BLOCKER_TYPE_MASK) return; WRITE_ONCE(current->blocker, lock_ptr | type); @@ -53,8 +57,6 @@ static inline void hung_task_set_blocker(void *lock, unsigned long type) static inline void hung_task_clear_blocker(void) { - WARN_ON_ONCE(!READ_ONCE(current->blocker)); - WRITE_ONCE(current->blocker, 0UL); } |