From: Ingo Molnar Date: Mon, 11 Jun 2012 08:30:23 +0000 (+0200) Subject: Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck... X-Git-Tag: upstream/snapshot3+hdmi~7230^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4a1e001d2bb75c47a9cdbbfb66ae51daff1ddcba;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git Merge branch 'rcu/urgent' of git://git./linux/kernel/git/paulmck/linux-rcu into core/urgent Merge RCU fixes from Paul E. McKenney: " This series has four patches, the major point of which is to eliminate some slowdowns (including boot-time slowdowns) resulting from some RCU_FAST_NO_HZ changes. The issue with the changes is that posting timers from the idle loop has no effect if the CPU has entered dyntick-idle mode because the CPU has already computed its wakeup time, and posting a timer does not cause it to be recomputed. The short-term fix is for RCU to precompute the timeout value so that the CPU's calculation is correct. " Signed-off-by: Ingo Molnar --- 4a1e001d2bb75c47a9cdbbfb66ae51daff1ddcba