diff options
| author | Christian Brauner <brauner@kernel.org> | 2025-11-11 09:59:08 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-11-11 09:59:08 +0100 |
| commit | a67ee4e2ba7643b2ff2b808155429aa4f51d57a4 (patch) | |
| tree | 36cae6262b542c047c5e0f172722ef795e30f7a3 /include/linux/hung_task.h | |
| parent | ae901e5e2e9b079761d26a366e0c80530d8aad22 (diff) | |
| parent | 3c60b0b1e55adbcf15528d78e0afca1933fa8c84 (diff) | |
Merge branch 'kbuild-6.19.fms.extension'
Bring in the shared branch with the kbuild tree to enable
'-fms-extensions' for 6.19. Further namespace cleanup work
requires this extension.
Signed-off-by: Christian Brauner <brauner@kernel.org>
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); } |