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| author | Jeff Garzik <jgarzik@pobox.com> | 2005-11-07 22:51:47 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-11-07 22:51:47 -0500 |
| commit | 6b995751c2e851d2bc9c277b5884d0adb519e31d (patch) | |
| tree | 7a15b41b5d8ce612915584a0773c670d5c0ab5b8 /arch/s390/kernel/time.c | |
| parent | 6c2f4267833f453156f8f439cc32eb4c92f357b4 (diff) | |
| parent | d27ba47e7e8c466c18983a1779d611f82d6a354f (diff) | |
Merge branch 'master'
Diffstat (limited to 'arch/s390/kernel/time.c')
| -rw-r--r-- | arch/s390/kernel/time.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 9a1d95894f3..c36353e8c14 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -237,6 +237,8 @@ int sysctl_hz_timer = 1; */ static inline void stop_hz_timer(void) { + unsigned long flags; + unsigned long seq, next; __u64 timer, todval; if (sysctl_hz_timer != 0) @@ -257,7 +259,11 @@ static inline void stop_hz_timer(void) * This cpu is going really idle. Set up the clock comparator * for the next event. */ - timer = (__u64) (next_timer_interrupt() - jiffies) + jiffies_64; + next = next_timer_interrupt(); + do { + seq = read_seqbegin_irqsave(&xtime_lock, flags); + timer = (__u64)(next - jiffies) + jiffies_64; + } while (read_seqretry_irqrestore(&xtime_lock, seq, flags)); todval = -1ULL; /* Be careful about overflows. */ if (timer < (-1ULL / CLK_TICKS_PER_JIFFY)) { |