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Date: Sun, 16 Oct 2011 18:51:02 -0700 From: Josh Triplett <josh@...htriplett.org> To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> Cc: linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com, akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca, niv@...ibm.com, tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu, dhowells@...hat.com, eric.dumazet@...il.com, darren@...art.com, patches@...aro.org, "Paul E. McKenney" <paul.mckenney@...aro.org> Subject: Re: [PATCH tip/core/rcu 38/55] rcu: Prohibit grace periods during early boot On Tue, Sep 06, 2011 at 11:00:32AM -0700, Paul E. McKenney wrote: > From: Paul E. McKenney <paul.mckenney@...aro.org> > > Greater use of RCU during early boot (before the scheduler is operating) > is causing RCU to attempt to start grace periods during that time, which > in turn is resulting in both RCU and the callback functions attempting > to use the scheduler before it is ready. > > This commit prevents these problems by prohibiting RCU grace periods > until after the scheduler has spawned the first non-idle task. As with patch 36, this seems like a good candidate for jump labels. - Josh Triplett -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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