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clocksource: pass clocksource to read() callback

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Pass clocksource pointer to the read() callback for clocksources.  This
allows us to share the callback between multiple instances.

[hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods]
[akpm@linux-foundation.org: cleanup]
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Magnus Damm
2009-04-21 12:24:00 -07:00
committed by Linus Torvalds
parent ff14ed5db6
commit 8e19608e8b
54 changed files with 94 additions and 79 deletions
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6
include/linux/clocksource.h
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@@ -143,7 +143,7 @@ extern u64 timecounter_cyc2time(struct timecounter *tc,
* 400-499: Perfect
* The ideal clocksource. A must-use where
* available.
* @read: returns a cycle value
* @read: returns a cycle value, passes clocksource as argument
* @mask: bitmask for two's complement
* subtraction of non 64 bit counters
* @mult: cycle to nanosecond multiplier (adjusted by NTP)
@@ -162,7 +162,7 @@ struct clocksource {
char *name;
struct list_head list;
int rating;
cycle_t (*read)(void);
cycle_t (*read)(struct clocksource *cs);
cycle_t mask;
u32 mult;
u32 mult_orig;
@@ -271,7 +271,7 @@ static inline u32 clocksource_hz2mult(u32 hz, u32 shift_constant)
*/
static inline cycle_t clocksource_read(struct clocksource *cs)
{
return cs->read();
return cs->read(cs);
}
/**