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arch: Remove spin_unlock_wait() arch-specific definitions

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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 the underlying arch-specific
arch_spin_unlock_wait() for all architectures providing them.

Signed-off-by: Paul E. McKenney <[email protected]>
Cc: <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Alan Stern <[email protected]>
Cc: Andrea Parri <[email protected]>
Cc: Linus Torvalds <[email protected]>
Acked-by: Will Deacon <[email protected]>
Acked-by: Boqun Feng <[email protected]>
This commit is contained in:
Paul E. McKenney 2017-06-29 15:53:02 -07:00
commit 952111d7db
21 changed files with 5 additions and 241 deletions
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5
arch/hexagon/include/asm/spinlock.h
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@ -179,11 +179,6 @@ static inline unsigned int arch_spin_trylock(arch_spinlock_t *lock)
*/
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
{
smp_cond_load_acquire(&lock->lock, !VAL);
}
#define arch_spin_is_locked(x) ((x)->lock != 0)
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)