diff options
| author | mav <mav@FreeBSD.org> | 2010-09-14 08:48:06 +0000 |
|---|---|---|
| committer | mav <mav@FreeBSD.org> | 2010-09-14 08:48:06 +0000 |
| commit | 6c05aa4db6d1ea20da8eca83a1214b74821b32d8 (patch) | |
| tree | ad6e771c5b5091a633bf1f813ca1f742162ecb96 /sys/sys | |
| parent | 5864d6e457c81a0a80b2ab3b57ee852e6f62efcb (diff) | |
| download | FreeBSD-src-6c05aa4db6d1ea20da8eca83a1214b74821b32d8.zip FreeBSD-src-6c05aa4db6d1ea20da8eca83a1214b74821b32d8.tar.gz | |
Make kern_tc.c provide minimum frequency of tc_ticktock() calls, required
to handle current timecounter wraps. Make kern_clocksource.c to honor that
requirement, scheduling sleeps on first CPU for no more then specified
period. Allow other CPUs to sleep up to 1/4 second (for any case).
Diffstat (limited to 'sys/sys')
| -rw-r--r-- | sys/sys/callout.h | 2 | ||||
| -rw-r--r-- | sys/sys/timetc.h | 6 |
2 files changed, 6 insertions, 2 deletions
diff --git a/sys/sys/callout.h b/sys/sys/callout.h index 8fcd06e..c0077a8 100644 --- a/sys/sys/callout.h +++ b/sys/sys/callout.h @@ -96,7 +96,7 @@ int callout_schedule_on(struct callout *, int, int); #define callout_stop(c) _callout_stop_safe(c, 0) int _callout_stop_safe(struct callout *, int); void callout_tick(void); -int callout_tickstofirst(void); +int callout_tickstofirst(int limit); extern void (*callout_new_inserted)(int cpu, int ticks); #endif diff --git a/sys/sys/timetc.h b/sys/sys/timetc.h index 3249788..dc1dea4 100644 --- a/sys/sys/timetc.h +++ b/sys/sys/timetc.h @@ -65,11 +65,15 @@ struct timecounter { }; extern struct timecounter *timecounter; +extern int tc_min_ticktock_freq; /* + * Minimal tc_ticktock() call frequency, + * required to handle counter wraps. + */ u_int64_t tc_getfrequency(void); void tc_init(struct timecounter *tc); void tc_setclock(struct timespec *ts); -void tc_ticktock(void); +void tc_ticktock(int cnt); void cpu_tick_calibration(void); #ifdef SYSCTL_DECL |
