diff options
| author | john stultz <johnstul@us.ibm.com> | 2007-02-16 01:27:26 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-16 08:13:56 -0800 |
| commit | f4304ab21513b834c8fe3403927c60c2b81a72d7 (patch) | |
| tree | 212c8fa327d9cf3f29cccf172f0707a3eb6524f8 /kernel/hrtimer.c | |
| parent | 771ee3b04eaac6184312825eb600b4c598f027a5 (diff) | |
| download | linux-f4304ab21513b834c8fe3403927c60c2b81a72d7.tar.gz linux-f4304ab21513b834c8fe3403927c60c2b81a72d7.tar.bz2 linux-f4304ab21513b834c8fe3403927c60c2b81a72d7.zip | |
[PATCH] HZ free ntp
Distangle the NTP update from HZ. This is necessary for dynamic tick enabled
kernels.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/hrtimer.c')
| -rw-r--r-- | kernel/hrtimer.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index f44e499e8fca..80666f6cd4f9 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -128,15 +128,20 @@ EXPORT_SYMBOL_GPL(ktime_get_ts); static void hrtimer_get_softirq_time(struct hrtimer_base *base) { ktime_t xtim, tomono; + struct timespec xts; unsigned long seq; do { seq = read_seqbegin(&xtime_lock); - xtim = timespec_to_ktime(xtime); - tomono = timespec_to_ktime(wall_to_monotonic); - +#ifdef CONFIG_NO_HZ + getnstimeofday(&xts); +#else + xts = xtime; +#endif } while (read_seqretry(&xtime_lock, seq)); + xtim = timespec_to_ktime(xts); + tomono = timespec_to_ktime(wall_to_monotonic); base[CLOCK_REALTIME].softirq_time = xtim; base[CLOCK_MONOTONIC].softirq_time = ktime_add(xtim, tomono); } |