diff options
Diffstat (limited to 'kernel/timer.c')
-rw-r--r-- | kernel/timer.c | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/kernel/timer.c b/kernel/timer.c index 4b088fcadb3..b68a21a82e1 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -832,30 +832,33 @@ EXPORT_SYMBOL(do_settimeofday); * * Accumulates current time interval and initializes new clocksource */ -static int change_clocksource(void) +static void change_clocksource(void) { struct clocksource *new; cycle_t now; u64 nsec; + new = clocksource_get_next(); - if (clock != new) { - now = clocksource_read(new); - nsec = __get_nsec_offset(); - timespec_add_ns(&xtime, nsec); - - clock = new; - clock->cycle_last = now; - printk(KERN_INFO "Time: %s clocksource has been installed.\n", - clock->name); - return 1; - } - return 0; + + if (clock == new) + return; + + now = clocksource_read(new); + nsec = __get_nsec_offset(); + timespec_add_ns(&xtime, nsec); + + clock = new; + clock->cycle_last = now; + + clock->error = 0; + clock->xtime_nsec = 0; + clocksource_calculate_interval(clock, NTP_INTERVAL_LENGTH); + + printk(KERN_INFO "Time: %s clocksource has been installed.\n", + clock->name); } #else -static inline int change_clocksource(void) -{ - return 0; -} +static inline void change_clocksource(void) { } #endif /** @@ -869,7 +872,7 @@ int timekeeping_is_continuous(void) do { seq = read_seqbegin(&xtime_lock); - ret = clock->flags & CLOCK_SOURCE_IS_CONTINUOUS; + ret = clock->flags & CLOCK_SOURCE_VALID_FOR_HRES; } while (read_seqretry(&xtime_lock, seq)); @@ -1124,11 +1127,7 @@ static void update_wall_time(void) clock->xtime_nsec -= (s64)xtime.tv_nsec << clock->shift; /* check to see if there is a new clocksource to use */ - if (change_clocksource()) { - clock->error = 0; - clock->xtime_nsec = 0; - clocksource_calculate_interval(clock, NTP_INTERVAL_LENGTH); - } + change_clocksource(); } /* |