diff options
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/include/arch/cpu.h | 6 | ||||
| -rw-r--r-- | src/arch/x86/include/arch/smp/spinlock.h | 7 |
2 files changed, 6 insertions, 7 deletions
diff --git a/src/arch/x86/include/arch/cpu.h b/src/arch/x86/include/arch/cpu.h index 82f470ec2d..b622465a25 100644 --- a/src/arch/x86/include/arch/cpu.h +++ b/src/arch/x86/include/arch/cpu.h @@ -269,6 +269,12 @@ static inline void get_fms(struct cpuinfo_x86 *c, uint32_t tfms) } +/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */ +static __always_inline void cpu_relax(void) +{ + __asm__ __volatile__("rep;nop" : : : "memory"); +} + #define asmlinkage __attribute__((regparm(0))) /* diff --git a/src/arch/x86/include/arch/smp/spinlock.h b/src/arch/x86/include/arch/smp/spinlock.h index 41189933d9..a05d47a233 100644 --- a/src/arch/x86/include/arch/smp/spinlock.h +++ b/src/arch/x86/include/arch/smp/spinlock.h @@ -62,12 +62,6 @@ static __always_inline void spin_unlock(spinlock_t *lock) : "=m" (lock->lock) : : "memory"); } -/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */ -static __always_inline void cpu_relax(void) -{ - __asm__ __volatile__("rep;nop" : : : "memory"); -} - #else #define DECLARE_SPIN_LOCK(x) @@ -76,7 +70,6 @@ static __always_inline void cpu_relax(void) #define spin_unlock_wait(lock) do {} while (0) #define spin_lock(lock) do {} while (0) #define spin_unlock(lock) do {} while (0) -#define cpu_relax() do {} while (0) #endif |