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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-06-29 15:53:02 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-08-17 08:08:59 -0700
commit952111d7db02573e7165e338de8d4871fa447b21 (patch)
tree9b66fe680204959a22ef8cf72c97180de2a6643b /arch/sh
parentd3a024abbc438277851c510b51ec9b158821488b (diff)
arch: Remove spin_unlock_wait() arch-specific 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 the underlying arch-specific arch_spin_unlock_wait() for all architectures providing them. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: <linux-arch@vger.kernel.org> 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> Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Boqun Feng <boqun.feng@gmail.com>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/include/asm/spinlock-cas.h5
-rw-r--r--arch/sh/include/asm/spinlock-llsc.h5
2 files changed, 0 insertions, 10 deletions
diff --git a/arch/sh/include/asm/spinlock-cas.h b/arch/sh/include/asm/spinlock-cas.h
index c46e8cc7b515..5ed7dbbd94ff 100644
--- a/arch/sh/include/asm/spinlock-cas.h
+++ b/arch/sh/include/asm/spinlock-cas.h
@@ -29,11 +29,6 @@ static inline unsigned __sl_cas(volatile unsigned *p, unsigned old, unsigned new
#define arch_spin_is_locked(x) ((x)->lock <= 0)
#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 > 0);
-}
-
static inline void arch_spin_lock(arch_spinlock_t *lock)
{
while (!__sl_cas(&lock->lock, 1, 0));
diff --git a/arch/sh/include/asm/spinlock-llsc.h b/arch/sh/include/asm/spinlock-llsc.h
index cec78143fa83..f77263aae760 100644
--- a/arch/sh/include/asm/spinlock-llsc.h
+++ b/arch/sh/include/asm/spinlock-llsc.h
@@ -21,11 +21,6 @@
#define arch_spin_is_locked(x) ((x)->lock <= 0)
#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 > 0);
-}
-
/*
* Simple spin lock operations. There are two variants, one clears IRQ's
* on the local processor, one does not.