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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-02-14 21:36:59 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2015-02-13 22:20:07 (GMT) |
| commit | fa5f1ad2efe7b9e1b36a37e99b7c99d59b4b92d2 (patch) | |
| tree | d51150032fdfba3ff470032b2181f0cdd4e74909 /kernel/time/jiffies.c | |
| parent | 16b20a879d296a79cda02ab8742c40eb992a0710 (diff) | |
| download | linux-fsl-qoriq-fa5f1ad2efe7b9e1b36a37e99b7c99d59b4b92d2.tar.xz | |
timekeeping-split-jiffies-lock.patch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time/jiffies.c')
| -rw-r--r-- | kernel/time/jiffies.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c index a6a5bf5..23d7203 100644 --- a/kernel/time/jiffies.c +++ b/kernel/time/jiffies.c @@ -73,7 +73,8 @@ static struct clocksource clocksource_jiffies = { .shift = JIFFIES_SHIFT, }; -__cacheline_aligned_in_smp DEFINE_SEQLOCK(jiffies_lock); +__cacheline_aligned_in_smp DEFINE_RAW_SPINLOCK(jiffies_lock); +__cacheline_aligned_in_smp seqcount_t jiffies_seq; #if (BITS_PER_LONG < 64) u64 get_jiffies_64(void) @@ -82,9 +83,9 @@ u64 get_jiffies_64(void) u64 ret; do { - seq = read_seqbegin(&jiffies_lock); + seq = read_seqcount_begin(&jiffies_seq); ret = jiffies_64; - } while (read_seqretry(&jiffies_lock, seq)); + } while (read_seqcount_retry(&jiffies_seq, seq)); return ret; } EXPORT_SYMBOL(get_jiffies_64); |