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| author |   Maciej W. Rozycki <macro@linux-mips.org> | 2008-09-22 14:42:40 -0700 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2008-09-24 17:33:12 +0200 |
| commit | eb3f938fd6292dc79f43a5fe14784b044776e9f0 (patch) | |
| tree | eb0b485e95af3c6c15871992a9a6d0977869c9e7 /kernel/time | |
| parent | Merge branch 'linus' into timers/ntp (diff) | |
| download | linux-dev-eb3f938fd6292dc79f43a5fe14784b044776e9f0.tar.xz linux-dev-eb3f938fd6292dc79f43a5fe14784b044776e9f0.zip | |
ntp: let update_persistent_clock() sleep
This is a change that makes the 11-minute RTC update be run in the process
context. This is so that update_persistent_clock() can sleep, which may
be required for certain types of RTC hardware -- most notably I2C devices.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: David Brownell <david-b@pacbell.net>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/ntp.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index c6921aa1a42a..450a45cb01c1 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -10,13 +10,13 @@ #include <linux/mm.h> #include <linux/time.h> -#include <linux/timer.h> #include <linux/timex.h> #include <linux/jiffies.h> #include <linux/hrtimer.h> #include <linux/capability.h> #include <linux/math64.h> #include <linux/clocksource.h> +#include <linux/workqueue.h> #include <asm/timex.h> /* @@ -218,11 +218,11 @@ void second_overflow(void) /* Disable the cmos update - used by virtualization and embedded */ int no_sync_cmos_clock __read_mostly; -static void sync_cmos_clock(unsigned long dummy); +static void sync_cmos_clock(struct work_struct *work); -static DEFINE_TIMER(sync_cmos_timer, sync_cmos_clock, 0, 0); +static DECLARE_DELAYED_WORK(sync_cmos_work, sync_cmos_clock); -static void sync_cmos_clock(unsigned long dummy) +static void sync_cmos_clock(struct work_struct *work) { struct timespec now, next; int fail = 1; @@ -258,13 +258,13 @@ static void sync_cmos_clock(unsigned long dummy) next.tv_sec++; next.tv_nsec -= NSEC_PER_SEC; } - mod_timer(&sync_cmos_timer, jiffies + timespec_to_jiffies(&next)); + schedule_delayed_work(&sync_cmos_work, timespec_to_jiffies(&next)); } static void notify_cmos_timer(void) { if (!no_sync_cmos_clock) - mod_timer(&sync_cmos_timer, jiffies + 1); + schedule_delayed_work(&sync_cmos_work, 0); } #else |