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authorJohn Stultz <john.stultz@linaro.org>2012-02-28 16:50:11 -0800
committerJohn Stultz <john.stultz@linaro.org>2012-11-13 14:08:23 -0500
commitd6ad418763888f617ac5b4849823e4cd670df1dd (patch)
tree92d75b05849f98e1a20eb8fa8bb8a26818707cd2 /kernel/time/jiffies.c
parent47c8c91b2d60006df22146effe79ac4cdafd9205 (diff)
downloadlinux-d6ad418763888f617ac5b4849823e4cd670df1dd.tar.bz2
time: Kill xtime_lock, replacing it with jiffies_lock
Now that timekeeping is protected by its own locks, rename the xtime_lock to jifffies_lock to better describe what it protects. CC: Thomas Gleixner <tglx@linutronix.de> CC: Eric Dumazet <eric.dumazet@gmail.com> CC: Richard Cochran <richardcochran@gmail.com> Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'kernel/time/jiffies.c')
-rw-r--r--kernel/time/jiffies.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
index 25f5b2699d37..7a925ba456fb 100644
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -67,6 +67,8 @@ static struct clocksource clocksource_jiffies = {
.shift = JIFFIES_SHIFT,
};
+__cacheline_aligned_in_smp DEFINE_SEQLOCK(jiffies_lock);
+
#if (BITS_PER_LONG < 64)
u64 get_jiffies_64(void)
{
@@ -74,9 +76,9 @@ u64 get_jiffies_64(void)
u64 ret;
do {
- seq = read_seqbegin(&xtime_lock);
+ seq = read_seqbegin(&jiffies_lock);
ret = jiffies_64;
- } while (read_seqretry(&xtime_lock, seq));
+ } while (read_seqretry(&jiffies_lock, seq));
return ret;
}
EXPORT_SYMBOL(get_jiffies_64);