diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2021-08-16 00:28:36 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-08-17 20:03:33 +0300 |
| commit | ebf4c55c1ddbabaea120fe8d48ce25b4f5da93a1 (patch) | |
| tree | 3cd4d0fe2e68747357d0e16549638cca797a4afd /include/linux/mutex.h | |
| parent | 4f1893ec8cfb4b17e3b89158a1e3e550a9a9bf3c (diff) | |
| download | linux-ebf4c55c1ddbabaea120fe8d48ce25b4f5da93a1.tar.xz | |
locking/mutex: Make mutex::wait_lock raw
The wait_lock of mutex is really a low level lock. Convert it to a
raw_spinlock like the wait_lock of rtmutex.
[ mingo: backmerged the test_lockup.c build fix by bigeasy. ]
Co-developed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210815211304.166863404@linutronix.de
Diffstat (limited to 'include/linux/mutex.h')
| -rw-r--r-- | include/linux/mutex.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/mutex.h b/include/linux/mutex.h index db3367586a06..0bbc872ba72b 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -50,7 +50,7 @@ */ struct mutex { atomic_long_t owner; - spinlock_t wait_lock; + raw_spinlock_t wait_lock; #ifdef CONFIG_MUTEX_SPIN_ON_OWNER struct optimistic_spin_queue osq; /* Spinner MCS lock */ #endif @@ -105,7 +105,7 @@ do { \ #define __MUTEX_INITIALIZER(lockname) \ { .owner = ATOMIC_LONG_INIT(0) \ - , .wait_lock = __SPIN_LOCK_UNLOCKED(lockname.wait_lock) \ + , .wait_lock = __RAW_SPIN_LOCK_UNLOCKED(lockname.wait_lock) \ , .wait_list = LIST_HEAD_INIT(lockname.wait_list) \ __DEBUG_MUTEX_INITIALIZER(lockname) \ __DEP_MAP_MUTEX_INITIALIZER(lockname) } |