diff options
Diffstat (limited to 'arch/x86/include/asm/qrwlock.h')
| -rw-r--r-- | arch/x86/include/asm/qrwlock.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/x86/include/asm/qrwlock.h b/arch/x86/include/asm/qrwlock.h new file mode 100644 index 00000000000..ae0e241e228 --- /dev/null +++ b/arch/x86/include/asm/qrwlock.h @@ -0,0 +1,17 @@ +#ifndef _ASM_X86_QRWLOCK_H +#define _ASM_X86_QRWLOCK_H + +#include <asm-generic/qrwlock_types.h> + +#ifndef CONFIG_X86_PPRO_FENCE +#define queue_write_unlock queue_write_unlock +static inline void queue_write_unlock(struct qrwlock *lock) +{ + barrier(); + ACCESS_ONCE(*(u8 *)&lock->cnts) = 0; +} +#endif + +#include <asm-generic/qrwlock.h> + +#endif /* _ASM_X86_QRWLOCK_H */ |