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powerpc/spinlock: Define smp_mb__after_spinlock only once

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Instead of both queued and simple spinlocks doing it. Move
it into the arch's spinlock.h.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210309015950.27688-2-dave@stgolabs.net
This commit is contained in:
Davidlohr Bueso 2021-03-08 17:59:48 -08:00 committed by Michael Ellerman
parent 93c043e393
commit 2bf3604c41
3 changed files with 3 additions and 5 deletions
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2
arch/powerpc/include/asm/qspinlock.h
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@ -44,8 +44,6 @@ static __always_inline void queued_spin_lock(struct qspinlock *lock)
}
#define queued_spin_lock queued_spin_lock
#define smp_mb__after_spinlock() smp_mb()
static __always_inline int queued_spin_is_locked(struct qspinlock *lock)
{
/*

3
arch/powerpc/include/asm/simple_spinlock.h
View file

@ -282,7 +282,4 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
#define arch_read_relax(lock) rw_yield(lock)
#define arch_write_relax(lock) rw_yield(lock)
/* See include/linux/spinlock.h */
#define smp_mb__after_spinlock() smp_mb()
#endif /* _ASM_POWERPC_SIMPLE_SPINLOCK_H */

3
arch/powerpc/include/asm/spinlock.h
View file

@ -10,6 +10,9 @@
#include <asm/simple_spinlock.h>
#endif
/* See include/linux/spinlock.h */
#define smp_mb__after_spinlock() smp_mb()
#ifndef CONFIG_PARAVIRT_SPINLOCKS
static inline void pv_spinlocks_init(void) { }
#endif