diff options
Diffstat (limited to 'arch/powerpc/include/asm/qspinlock_types.h')
| -rw-r--r-- | arch/powerpc/include/asm/qspinlock_types.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/qspinlock_types.h b/arch/powerpc/include/asm/qspinlock_types.h index b9a5a52fa670..1911a8a16237 100644 --- a/arch/powerpc/include/asm/qspinlock_types.h +++ b/arch/powerpc/include/asm/qspinlock_types.h @@ -29,7 +29,8 @@ typedef struct qspinlock { * Bitfields in the lock word: * * 0: locked bit - * 1-16: unused bits + * 1-15: unused bits + * 16: must queue bit * 17-31: tail cpu (+1) */ #define _Q_SET_MASK(type) (((1U << _Q_ ## type ## _BITS) - 1)\ @@ -39,6 +40,11 @@ typedef struct qspinlock { #define _Q_LOCKED_BITS 1 #define _Q_LOCKED_VAL (1U << _Q_LOCKED_OFFSET) +/* 0x00010000 */ +#define _Q_MUST_Q_OFFSET 16 +#define _Q_MUST_Q_BITS 1 +#define _Q_MUST_Q_VAL (1U << _Q_MUST_Q_OFFSET) + /* 0xfffe0000 */ #define _Q_TAIL_CPU_OFFSET 17 #define _Q_TAIL_CPU_BITS 15 |