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| author | Takashi Iwai <tiwai@suse.de> | 2011-08-15 12:47:19 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-08-15 12:47:19 +0200 |
| commit | 2d9f8a6e73ef2ec8ecaa24ca98e7010d6edd089f (patch) | |
| tree | 9ea035b696137b345c69532a318f55502f530558 /include/linux/percpu.h | |
| parent | ecf726f5414489fe749477eb77d6cb12bb93c8bc (diff) | |
| parent | eade7b281c9fc18401b989c77d5e5e660b25a3b7 (diff) | |
Merge branch 'fix/hda' into topic/hda
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); * Special handling for cmpxchg_double. cmpxchg_double is passed two * percpu variables. The first has to be aligned to a double word * boundary and the second has to follow directly thereafter. + * We enforce this on all architectures even if they don't support + * a double cmpxchg instruction, since it's a cheap requirement, and it + * avoids breaking the requirement for architectures with the instruction. */ #define __pcpu_double_call_return_bool(stem, pcp1, pcp2, ...) \ ({ \ |