diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
| commit | d0b2f91bede3bd5e3d24dd6803e56eee959c1797 (patch) | |
| tree | 7fee4ab0509879c373c4f2cbd5b8a5be5b4041ee /arch/m32r/include/asm/spinlock.h | |
| parent | e914f8eb445e8f74b00303c19c2ffceaedd16a05 (diff) | |
Linux-libre 4.8.2-gnupck-4.8.2-gnu
Diffstat (limited to 'arch/m32r/include/asm/spinlock.h')
| -rw-r--r-- | arch/m32r/include/asm/spinlock.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/m32r/include/asm/spinlock.h b/arch/m32r/include/asm/spinlock.h index fa13694ea..323c7fc95 100644 --- a/arch/m32r/include/asm/spinlock.h +++ b/arch/m32r/include/asm/spinlock.h @@ -13,6 +13,8 @@ #include <linux/atomic.h> #include <asm/dcache_clear.h> #include <asm/page.h> +#include <asm/barrier.h> +#include <asm/processor.h> /* * Your basic SMP spinlocks, allowing only a single CPU anywhere @@ -27,8 +29,11 @@ #define arch_spin_is_locked(x) (*(volatile int *)(&(x)->slock) <= 0) #define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock) -#define arch_spin_unlock_wait(x) \ - do { cpu_relax(); } while (arch_spin_is_locked(x)) + +static inline void arch_spin_unlock_wait(arch_spinlock_t *lock) +{ + smp_cond_load_acquire(&lock->slock, VAL > 0); +} /** * arch_spin_trylock - Try spin lock and return a result |