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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-02-14 21:36:59 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-04-10 00:18:35 (GMT) |
| commit | 7d646711764bb602b8c4b65bd336a83ff5fd3596 (patch) | |
| tree | a502dffd39d5f84a53719551a22199cec9465455 /kernel/time/tick-common.c | |
| parent | cdd19ee3769eea3ce080e383fc490dc14d305c8e (diff) | |
| download | linux-fsl-qoriq-7d646711764bb602b8c4b65bd336a83ff5fd3596.tar.xz | |
timekeeping-split-jiffies-lock.patch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time/tick-common.c')
| -rw-r--r-- | kernel/time/tick-common.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c index 64522ec..1b80eb0 100644 --- a/kernel/time/tick-common.c +++ b/kernel/time/tick-common.c @@ -63,13 +63,15 @@ int tick_is_oneshot_available(void) static void tick_periodic(int cpu) { if (tick_do_timer_cpu == cpu) { - write_seqlock(&jiffies_lock); + raw_spin_lock(&jiffies_lock); + write_seqcount_begin(&jiffies_seq); /* Keep track of the next tick event */ tick_next_period = ktime_add(tick_next_period, tick_period); do_timer(1); - write_sequnlock(&jiffies_lock); + write_seqcount_end(&jiffies_seq); + raw_spin_unlock(&jiffies_lock); } update_process_times(user_mode(get_irq_regs())); @@ -130,9 +132,9 @@ void tick_setup_periodic(struct clock_event_device *dev, int broadcast) ktime_t next; do { - seq = read_seqbegin(&jiffies_lock); + seq = read_seqcount_begin(&jiffies_seq); next = tick_next_period; - } while (read_seqretry(&jiffies_lock, seq)); + } while (read_seqcount_retry(&jiffies_seq, seq)); clockevents_set_mode(dev, CLOCK_EVT_MODE_ONESHOT); |