Re: INFO: rcu_preempt self-detected stall on CPU with 3.10 kernel

2014-02-24 Thread wyang
On 02/24/2014 11:47 PM, Paul E. McKenney wrote: On Mon, Feb 24, 2014 at 04:25:25PM +0800, wyang wrote: Hi Paul, I ran into a cpu stall warning in a MIPS board with 3.10 kernel, I noted you push a patch(c896054f) to reduce default RCU CPU stall warning timeout to 21s. why is it 21s? what decide

Re: INFO: rcu_preempt self-detected stall on CPU with 3.10 kernel

2014-02-24 Thread Paul E. McKenney
On Mon, Feb 24, 2014 at 04:25:25PM +0800, wyang wrote: > Hi Paul, > > I ran into a cpu stall warning in a MIPS board with 3.10 kernel, I > noted you push a patch(c896054f) to reduce default RCU CPU stall > warning timeout to 21s. > why is it 21s? what decide this time? seems this time is too shor