diff options
| author | David S. Miller <davem@davemloft.net> | 2009-12-11 17:12:17 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-12-11 17:12:17 -0800 |
| commit | 501706565b2d4d2d40d0d301d5411ede099b8a6f (patch) | |
| tree | 142a18bf1f1e74a09dbfa27540b893ade0fd797d /include/linux/clocksource.h | |
| parent | e93737b0f0159a61772894943199fd3b6f315641 (diff) | |
| parent | 2fe77b81c77eed92c4c0439f74c8148a295b4a86 (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
include/net/tcp.h
Diffstat (limited to 'include/linux/clocksource.h')
| -rw-r--r-- | include/linux/clocksource.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h index 83d2fbd81b93..8a4a130cc196 100644 --- a/include/linux/clocksource.h +++ b/include/linux/clocksource.h @@ -151,6 +151,7 @@ extern u64 timecounter_cyc2time(struct timecounter *tc, * subtraction of non 64 bit counters * @mult: cycle to nanosecond multiplier * @shift: cycle to nanosecond divisor (power of two) + * @max_idle_ns: max idle time permitted by the clocksource (nsecs) * @flags: flags describing special properties * @vread: vsyscall based read * @resume: resume function for the clocksource, if necessary @@ -168,6 +169,7 @@ struct clocksource { cycle_t mask; u32 mult; u32 shift; + u64 max_idle_ns; unsigned long flags; cycle_t (*vread)(void); void (*resume)(void); @@ -279,11 +281,23 @@ extern void clocksource_resume(void); extern struct clocksource * __init __weak clocksource_default_clock(void); extern void clocksource_mark_unstable(struct clocksource *cs); +extern void +clocks_calc_mult_shift(u32 *mult, u32 *shift, u32 from, u32 to, u32 minsec); + +static inline void +clocksource_calc_mult_shift(struct clocksource *cs, u32 freq, u32 minsec) +{ + return clocks_calc_mult_shift(&cs->mult, &cs->shift, freq, + NSEC_PER_SEC, minsec); +} + #ifdef CONFIG_GENERIC_TIME_VSYSCALL -extern void update_vsyscall(struct timespec *ts, struct clocksource *c); +extern void +update_vsyscall(struct timespec *ts, struct clocksource *c, u32 mult); extern void update_vsyscall_tz(void); #else -static inline void update_vsyscall(struct timespec *ts, struct clocksource *c) +static inline void +update_vsyscall(struct timespec *ts, struct clocksource *c, u32 mult) { } |