diff options
Diffstat (limited to 'include/linux/ww_mutex.h')
| -rw-r--r-- | include/linux/ww_mutex.h | 22 |
1 files changed, 5 insertions, 17 deletions
diff --git a/include/linux/ww_mutex.h b/include/linux/ww_mutex.h index 850424e5d030..b77f39f319ad 100644 --- a/include/linux/ww_mutex.h +++ b/include/linux/ww_mutex.h @@ -48,39 +48,26 @@ struct ww_acquire_ctx { #endif }; -#ifdef CONFIG_DEBUG_LOCK_ALLOC -# define __WW_CLASS_MUTEX_INITIALIZER(lockname, class) \ - , .ww_class = class -#else -# define __WW_CLASS_MUTEX_INITIALIZER(lockname, class) -#endif - #define __WW_CLASS_INITIALIZER(ww_class, _is_wait_die) \ { .stamp = ATOMIC_LONG_INIT(0) \ , .acquire_name = #ww_class "_acquire" \ , .mutex_name = #ww_class "_mutex" \ , .is_wait_die = _is_wait_die } -#define __WW_MUTEX_INITIALIZER(lockname, class) \ - { .base = __MUTEX_INITIALIZER(lockname.base) \ - __WW_CLASS_MUTEX_INITIALIZER(lockname, class) } - #define DEFINE_WD_CLASS(classname) \ struct ww_class classname = __WW_CLASS_INITIALIZER(classname, 1) #define DEFINE_WW_CLASS(classname) \ struct ww_class classname = __WW_CLASS_INITIALIZER(classname, 0) -#define DEFINE_WW_MUTEX(mutexname, ww_class) \ - struct ww_mutex mutexname = __WW_MUTEX_INITIALIZER(mutexname, ww_class) - /** * ww_mutex_init - initialize the w/w mutex * @lock: the mutex to be initialized * @ww_class: the w/w class the mutex should belong to * * Initialize the w/w mutex to unlocked state and associate it with the given - * class. + * class. Static define macro for w/w mutex is not provided and this function + * is the only way to properly initialize the w/w mutex. * * It is not allowed to initialize an already locked mutex. */ @@ -173,9 +160,10 @@ static inline void ww_acquire_done(struct ww_acquire_ctx *ctx) */ static inline void ww_acquire_fini(struct ww_acquire_ctx *ctx) { -#ifdef CONFIG_DEBUG_MUTEXES +#ifdef CONFIG_DEBUG_LOCK_ALLOC mutex_release(&ctx->dep_map, _THIS_IP_); - +#endif +#ifdef CONFIG_DEBUG_MUTEXES DEBUG_LOCKS_WARN_ON(ctx->acquired); if (!IS_ENABLED(CONFIG_PROVE_LOCKING)) /* |