From: Paul E. McKenney Date: Sat, 27 Feb 2010 00:38:58 +0000 (-0800) Subject: rcu: Fix accelerated GPs for last non-dynticked CPU X-Git-Tag: v2.6.34-rc1~265^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=71da81324c83ef65bb196c7f874ac1c6996d8287;p=pandora-kernel.git rcu: Fix accelerated GPs for last non-dynticked CPU This patch disables irqs across the call to rcu_needs_cpu(). It also enforces a hold-off period so that the idle loop doesn't softirq itself to death when there are lots of RCU callbacks in flight on the last non-dynticked CPU. Signed-off-by: Paul E. McKenney Cc: laijs@cn.fujitsu.com Cc: dipankar@in.ibm.com Cc: mathieu.desnoyers@polymtl.ca Cc: josh@joshtriplett.org Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org Cc: rostedt@goodmis.org Cc: Valdis.Kletnieks@vt.edu Cc: dhowells@redhat.com LKML-Reference: <1267231138-27856-3-git-send-email-paulmck@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar --- Reading git-diff-tree failed