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[PATCH] generic-time: add macro to simplify/hide mask constants

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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>
This commit is contained in:
Jim Cromie 2006-06-26 00:25:15 -07:00 • committed by Linus Torvalds
parent 7d622d4794
commit 7f9f303aa3
6 changed files with 9 additions and 7 deletions
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include/linux/clocksource.h
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@ -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