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| author | David S. Miller <davem@davemloft.net> | 2009-05-19 06:08:20 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-05-19 06:08:20 +0200 |
| commit | bb803cfbecb03a0cf8dc7e1864f18dda6631af00 (patch) | |
| tree | 6c0989693bea6f50cfa5c6bb14f52ec19668def3 /kernel/time/tick-common.c | |
| parent | The patch adds support for the PCI cards: PCIcan and PCIcanx (1, 2 or 4 chann... (diff) | |
| parent | pkt_sched: gen_estimator: use 64 bit intermediate counters for bps (diff) | |
| download | linux-bb803cfbecb03a0cf8dc7e1864f18dda6631af00.tar.xz linux-bb803cfbecb03a0cf8dc7e1864f18dda6631af00.zip | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/scsi/fcoe/fcoe.c
Diffstat (limited to 'kernel/time/tick-common.c')
| -rw-r--r-- | kernel/time/tick-common.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c index 21a5ca849514..83c4417b6a3c 100644 --- a/kernel/time/tick-common.c +++ b/kernel/time/tick-common.c @@ -93,7 +93,17 @@ void tick_handle_periodic(struct clock_event_device *dev) for (;;) { if (!clockevents_program_event(dev, next, ktime_get())) return; - tick_periodic(cpu); + /* + * Have to be careful here. If we're in oneshot mode, + * before we call tick_periodic() in a loop, we need + * to be sure we're using a real hardware clocksource. + * Otherwise we could get trapped in an infinite + * loop, as the tick_periodic() increments jiffies, + * when then will increment time, posibly causing + * the loop to trigger again and again. + */ + if (timekeeping_valid_for_hres()) + tick_periodic(cpu); next = ktime_add(next, tick_period); } } |