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authorThomas Gleixner <tglx@linutronix.de>2013-02-21 22:51:40 +0000
committerJohn Stultz <john.stultz@linaro.org>2013-04-04 13:18:32 -0700
commitca4523cda429712fc135c5db50920d90eb776a6c (patch)
tree6a8c260a24bcd5a188d25790984d0aa5a3fb3428 /mm
parent48cdc135d4840aab8efd2fc3bacb5d7dfd94a9c8 (diff)
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timekeeping: Shorten seq_count region
Shorten the seqcount write hold region to the actual update of the timekeeper and the related data (e.g vsyscall). On a contemporary x86 system this reduces the maximum latencies on Preempt-RT from 8us to 4us on the non-timekeeping cores. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: John Stultz <john.stultz@linaro.org>
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