From: Frederic Weisbecker <fweis...@gmail.com> Ingo,
Please pull the nohz/drop-double-write-v3 branch that can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git nohz/drop-double-write-v3 Although the 1st patch fixes a bug, it was a longstanding issue so that branch doesn't need to be applied in 3.17. The next merge window looks better. -- The tick reschedules itself unconditionally. It's relevant in periodic mode but not in dynticks mode where it results in spurious double clock writes and even spurious periodic behaviour for low-res case. This set fixes that: * 1st patch removes low-res periodic tick rescheduling in nohz mode. This fixes spurious periodic behaviour. * 2nd patch does the same for high-res mode. Here there is no such spurious periodic behaviour but it still spares a double clock write in some cases. --- Thanks, Frederic --- Viresh Kumar (2): nohz: Fix spurious periodic tick behaviour in low-res dynticks mode nohz: Avoid tick's double reprogramming in highres mode kernel/time/tick-sched.c | 8 ++++++++ 1 file changed, 8 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/