diff options
| author | Christian Brauner <brauner@kernel.org> | 2025-11-10 10:41:58 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-11-10 10:41:58 +0100 |
| commit | aa70b9cf6856a7f9f7780ab39d2eb07fce7477c0 (patch) | |
| tree | ac8982472228b793f08c10db5bf7457cf72b485b /include/linux/hung_task.h | |
| parent | a6446829f841bf108fca8ca1e8f4f67b3a59d86c (diff) | |
| parent | 3c60b0b1e55adbcf15528d78e0afca1933fa8c84 (diff) | |
Merge branch 'kbuild-6.19.fms.extension'
Bring in the shared branch with the Kbuild tree for enabling
'-fms-extensions' for 6.19.
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); } |