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| author | Greg Kroah-Hartman <gregkh@suse.de> | 2011-06-14 06:51:10 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-06-14 06:51:23 -0700 |
| commit | dcc854579059ff9633db4dc41c681371d22f794e (patch) | |
| tree | 985489cf3efcb1fcaa193237fb8674d530c188dd /include/linux/percpu.h | |
| parent | e73a9891b3a1c9fc0970e0c9dbe2cc47933ad752 (diff) | |
| parent | 2c53b436a30867eb6b47dd7bab23ba638d1fb0d2 (diff) | |
Merge 3.0-rc2 into usb-linus as it's needed by some USB patches
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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 8b97308e65d..9ca008f0c54 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, ...) \ ({ \ |