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| author | Jim Cromie <jim.cromie@gmail.com> | 2006-06-26 00:25:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 09:58:21 -0700 |
| commit | 7f9f303aa33c7acc7b4aa9ebea25cbd990bc707b (patch) | |
| tree | b5916e6b018356afdb5c8687e554a049532633bd /include/linux/clocksource.h | |
| parent | 7d622d4794490cef933c20e4a6279e43e03fafad (diff) | |
| download | lwn-7f9f303aa33c7acc7b4aa9ebea25cbd990bc707b.tar.gz lwn-7f9f303aa33c7acc7b4aa9ebea25cbd990bc707b.zip | |
[PATCH] generic-time: add macro to simplify/hide mask constants
Add a CLOCKSOURCE_MASK macro to simplify initializing the mask for a struct
clocksource, and use it to replace literal mask constants in the various
clocksource drivers.
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Acked-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/clocksource.h')
| -rw-r--r-- | include/linux/clocksource.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h index 5f4a7f72f3ee..4bc94282c364 100644 --- a/include/linux/clocksource.h +++ b/include/linux/clocksource.h @@ -65,6 +65,8 @@ struct clocksource { u64 interval_snsecs; }; +/* simplify initialization of mask field */ +#define CLOCKSOURCE_MASK(bits) (cycle_t)(bits<64 ? ((1ULL<<bits)-1) : -1) /** * clocksource_khz2mult - calculates mult from khz and shift |