diff options
Diffstat (limited to 'include/linux/percpu.h')
| -rw-r--r-- | include/linux/percpu.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 8b97308e65df..9ca008f0c542 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h | |||
| @@ -259,6 +259,9 @@ extern void __bad_size_call_parameter(void); | |||
| 259 | * Special handling for cmpxchg_double. cmpxchg_double is passed two | 259 | * Special handling for cmpxchg_double. cmpxchg_double is passed two |
| 260 | * percpu variables. The first has to be aligned to a double word | 260 | * percpu variables. The first has to be aligned to a double word |
| 261 | * boundary and the second has to follow directly thereafter. | 261 | * boundary and the second has to follow directly thereafter. |
| 262 | * We enforce this on all architectures even if they don't support | ||
| 263 | * a double cmpxchg instruction, since it's a cheap requirement, and it | ||
| 264 | * avoids breaking the requirement for architectures with the instruction. | ||
| 262 | */ | 265 | */ |
| 263 | #define __pcpu_double_call_return_bool(stem, pcp1, pcp2, ...) \ | 266 | #define __pcpu_double_call_return_bool(stem, pcp1, pcp2, ...) \ |
| 264 | ({ \ | 267 | ({ \ |