diff options
| author | Ingo Molnar <mingo@kernel.org> | 2016-07-27 12:35:35 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-27 12:35:35 +0200 |
| commit | df15929f8f5c69e987c31bf016eca4a38dba46f0 (patch) | |
| tree | cfb5fe5e8ebff4cabd70557a304f355546943cc9 /arch/hexagon/include/asm/spinlock.h | |
| parent | efaad554b4ffae1840a2759e09e21325ddbc8b05 (diff) | |
| parent | 37e13a1ebe32c4fbfbdb5413f42eb6e71d8b28a4 (diff) | |
Merge branch 'linus' into x86/microcode, to pick up merge window changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/hexagon/include/asm/spinlock.h')
| -rw-r--r-- | arch/hexagon/include/asm/spinlock.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/hexagon/include/asm/spinlock.h b/arch/hexagon/include/asm/spinlock.h index 12ca4ebc0338..a1c55788c5d6 100644 --- a/arch/hexagon/include/asm/spinlock.h +++ b/arch/hexagon/include/asm/spinlock.h @@ -23,6 +23,8 @@ #define _ASM_SPINLOCK_H #include <asm/irqflags.h> +#include <asm/barrier.h> +#include <asm/processor.h> /* * This file is pulled in for SMP builds. @@ -176,8 +178,12 @@ static inline unsigned int arch_spin_trylock(arch_spinlock_t *lock) * SMP spinlocks are intended to allow only a single CPU at the lock */ #define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock) -#define arch_spin_unlock_wait(lock) \ - do {while (arch_spin_is_locked(lock)) cpu_relax(); } while (0) + +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) |