diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2000-03-13 20:55:15 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2000-03-13 20:55:15 +0000 |
| commit | 1471f525455788c20b130690e0f104df451aeb43 (patch) | |
| tree | 3778beba56558beb9a9548ea5b467e9c44ea966f /include/asm-i386/system.h | |
| parent | e80d2c5456d30ebba5b0eb8a9d33e17d815d4d83 (diff) | |
Merge with Linux 2.3.51.
Diffstat (limited to 'include/asm-i386/system.h')
| -rw-r--r-- | include/asm-i386/system.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-i386/system.h b/include/asm-i386/system.h index ac0ff6e1e..36f2c8855 100644 --- a/include/asm-i386/system.h +++ b/include/asm-i386/system.h @@ -279,6 +279,8 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old, #define __restore_flags(x) __asm__ __volatile__("pushl %0 ; popfl": /* no output */ :"g" (x):"memory") #define __cli() __asm__ __volatile__("cli": : :"memory") #define __sti() __asm__ __volatile__("sti": : :"memory") +/* used in the idle loop; sti takes one instruction cycle to complete */ +#define safe_halt() __asm__ __volatile__("sti; hlt": : :"memory") /* For spinlocks etc */ #define local_irq_save(x) __asm__ __volatile__("pushfl ; popl %0 ; cli":"=g" (x): /* no input */ :"memory") |