Messages in this thread | | | Date | Tue, 2 Dec 2014 09:17:04 -0800 | From | "Paul E. McKenney" <> | Subject | Re: frequent lockups in 3.18rc4 |
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On Tue, Dec 02, 2014 at 02:58:38PM -0200, Dâniel Fraga wrote: > On Tue, 2 Dec 2014 16:40:37 +0800 > Lai Jiangshan <laijs@cn.fujitsu.com> wrote: > > > It is needed at lest for testing. > > > > CONFIG_TREE_PREEMPT_RCU=y with CONFIG_PREEMPT=n is needed for testing too. > > > > Please enable them (or enable them under CONFIG_RCU_TRACE=y) > > Lai, sorry but I didn't understand. Do you mean both of them > enabled? Because how can CONFIG_TREE_PREEMPT_RCU be enabled without > CONFIG_PREEMPT ?
Hmmm... I did misread that in my reply. A similar Kconfig edit will enable that, but I am even less happy about the thought of pushing that to mainline! ;-)
Thanx, Paul
> If you mean both enabled, I already reported a call trace with > both enabled: > > https://bugzilla.kernel.org/show_bug.cgi?id=85941 > > Please see my previous answer to Linus and Paul too. > > Regarding CONFIG_RCU_TRACE, do you mean > "CONFIG_TREE_RCU_TRACE"? I couldn't find CONFIG_RCU_TRACE. > > Thanks. > > -- > Linux 3.17.0-dirty: Shuffling Zombie Juror > http://www.youtube.com/DanielFragaBR > http://exchangewar.info > Bitcoin: 12H6661yoLDUZaYPdah6urZS5WiXwTAUgL >
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