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

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

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

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 short for MIPS, can I retore it to 60s? Do you give me any suggesti