diff options
| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-06-29 15:47:44 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-08-17 08:08:58 -0700 |
| commit | d3a024abbc438277851c510b51ec9b158821488b (patch) | |
| tree | e9b6f5c09bfd6825629bcbd20f0a17371ce29533 /include/linux/spinlock_up.h | |
| parent | drivers/ata: Replace spin_unlock_wait() with lock/unlock pair (diff) | |
| download | linux-dev-d3a024abbc438277851c510b51ec9b158821488b.tar.xz linux-dev-d3a024abbc438277851c510b51ec9b158821488b.zip | |
locking: Remove spin_unlock_wait() generic definitions
There is no agreed-upon definition of spin_unlock_wait()'s semantics,
and it appears that all callers could do just as well with a lock/unlock
pair. This commit therefore removes spin_unlock_wait() and related
definitions from core code.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Andrea Parri <parri.andrea@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/spinlock_up.h')
| -rw-r--r-- | include/linux/spinlock_up.h | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/include/linux/spinlock_up.h b/include/linux/spinlock_up.h index 0d9848de677d..612fb530af41 100644 --- a/include/linux/spinlock_up.h +++ b/include/linux/spinlock_up.h @@ -26,11 +26,6 @@ #ifdef CONFIG_DEBUG_SPINLOCK #define arch_spin_is_locked(x) ((x)->slock == 0) -static inline void arch_spin_unlock_wait(arch_spinlock_t *lock) -{ - smp_cond_load_acquire(&lock->slock, VAL); -} - static inline void arch_spin_lock(arch_spinlock_t *lock) { lock->slock = 0; @@ -73,7 +68,6 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock) #else /* DEBUG_SPINLOCK */ #define arch_spin_is_locked(lock) ((void)(lock), 0) -#define arch_spin_unlock_wait(lock) do { barrier(); (void)(lock); } while (0) /* for sched/core.c and kernel_lock.c: */ # define arch_spin_lock(lock) do { barrier(); (void)(lock); } while (0) # define arch_spin_lock_flags(lock, flags) do { barrier(); (void)(lock); } while (0) |