Re: rcu_dyntick and suspicious RCU usage

2012-07-17 Thread Paul E. McKenney
On Fri, Jul 13, 2012 at 05:12:30PM +0800, Fengguang Wu wrote: > On Thu, Jul 12, 2012 at 10:02:42AM -0700, Paul E. McKenney wrote: > > On Fri, Jul 13, 2012 at 12:57:38AM +0800, Fengguang Wu wrote: > > > On Thu, Jul 12, 2012 at 09:43:08AM -0700, Paul E. McKenney wrote: > > > > On Wed, Jul 11, 2012

Re: rcu_dyntick and suspicious RCU usage

2012-07-17 Thread Paul E. McKenney
On Fri, Jul 13, 2012 at 05:12:30PM +0800, Fengguang Wu wrote: On Thu, Jul 12, 2012 at 10:02:42AM -0700, Paul E. McKenney wrote: On Fri, Jul 13, 2012 at 12:57:38AM +0800, Fengguang Wu wrote: On Thu, Jul 12, 2012 at 09:43:08AM -0700, Paul E. McKenney wrote: On Wed, Jul 11, 2012 at

Re: rcu_dyntick and suspicious RCU usage

2012-07-13 Thread Fengguang Wu
On Thu, Jul 12, 2012 at 10:02:42AM -0700, Paul E. McKenney wrote: > On Fri, Jul 13, 2012 at 12:57:38AM +0800, Fengguang Wu wrote: > > On Thu, Jul 12, 2012 at 09:43:08AM -0700, Paul E. McKenney wrote: > > > On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: > > > > On Tue, Jul 10,

Re: rcu_dyntick and suspicious RCU usage

2012-07-13 Thread Fengguang Wu
On Thu, Jul 12, 2012 at 10:02:42AM -0700, Paul E. McKenney wrote: On Fri, Jul 13, 2012 at 12:57:38AM +0800, Fengguang Wu wrote: On Thu, Jul 12, 2012 at 09:43:08AM -0700, Paul E. McKenney wrote: On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: On Tue, Jul 10, 2012 at

Re: rcu_dyntick and suspicious RCU usage

2012-07-12 Thread Paul E. McKenney
On Fri, Jul 13, 2012 at 12:57:38AM +0800, Fengguang Wu wrote: > On Thu, Jul 12, 2012 at 09:43:08AM -0700, Paul E. McKenney wrote: > > On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: > > > On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: > > > > Hi Paul, > > > > > >

Re: rcu_dyntick and suspicious RCU usage

2012-07-12 Thread Paul E. McKenney
On Thu, Jul 12, 2012 at 10:11:30PM +0800, Fengguang Wu wrote: > On Wed, Jul 11, 2012 at 08:55:59PM +0800, Fengguang Wu wrote: > > On Wed, Jul 11, 2012 at 08:36:16PM +0800, Fengguang Wu wrote: > > > On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: > > > > On Tue, Jul 10, 2012 at

Re: rcu_dyntick and suspicious RCU usage

2012-07-12 Thread Fengguang Wu
On Thu, Jul 12, 2012 at 09:43:08AM -0700, Paul E. McKenney wrote: > On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: > > On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: > > > Hi Paul, > > > > > > Fortunately this bug is bisectable and the first bad commit is: > > >

Re: rcu_dyntick and suspicious RCU usage

2012-07-12 Thread Paul E. McKenney
On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: > On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: > > Hi Paul, > > > > Fortunately this bug is bisectable and the first bad commit is: > > > > commit 9b2e4f1880b789be1f24f9684f7a54b90310b5c0 > >

Re: rcu_dyntick and suspicious RCU usage

2012-07-12 Thread Fengguang Wu
On Wed, Jul 11, 2012 at 08:55:59PM +0800, Fengguang Wu wrote: > On Wed, Jul 11, 2012 at 08:36:16PM +0800, Fengguang Wu wrote: > > On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: > > > On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: > > > > Hi Paul, > > > > > > > >

Re: rcu_dyntick and suspicious RCU usage

2012-07-12 Thread Fengguang Wu
On Wed, Jul 11, 2012 at 08:55:59PM +0800, Fengguang Wu wrote: On Wed, Jul 11, 2012 at 08:36:16PM +0800, Fengguang Wu wrote: On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: Hi Paul, Fortunately this

Re: rcu_dyntick and suspicious RCU usage

2012-07-12 Thread Paul E. McKenney
On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: Hi Paul, Fortunately this bug is bisectable and the first bad commit is: commit 9b2e4f1880b789be1f24f9684f7a54b90310b5c0 Author: Paul E.

Re: rcu_dyntick and suspicious RCU usage

2012-07-12 Thread Fengguang Wu
On Thu, Jul 12, 2012 at 09:43:08AM -0700, Paul E. McKenney wrote: On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: Hi Paul, Fortunately this bug is bisectable and the first bad commit is:

Re: rcu_dyntick and suspicious RCU usage

2012-07-12 Thread Paul E. McKenney
On Thu, Jul 12, 2012 at 10:11:30PM +0800, Fengguang Wu wrote: On Wed, Jul 11, 2012 at 08:55:59PM +0800, Fengguang Wu wrote: On Wed, Jul 11, 2012 at 08:36:16PM +0800, Fengguang Wu wrote: On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: On Tue, Jul 10, 2012 at 12:47:00PM

Re: rcu_dyntick and suspicious RCU usage

2012-07-12 Thread Paul E. McKenney
On Fri, Jul 13, 2012 at 12:57:38AM +0800, Fengguang Wu wrote: On Thu, Jul 12, 2012 at 09:43:08AM -0700, Paul E. McKenney wrote: On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: Hi Paul, Fortunately

Re: rcu_dyntick and suspicious RCU usage

2012-07-11 Thread Fengguang Wu
On Wed, Jul 11, 2012 at 08:36:16PM +0800, Fengguang Wu wrote: > On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: > > On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: > > > Hi Paul, > > > > > > Fortunately this bug is bisectable and the first bad commit is: > > > > >

Re: rcu_dyntick and suspicious RCU usage

2012-07-11 Thread Fengguang Wu
On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: > On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: > > Hi Paul, > > > > Fortunately this bug is bisectable and the first bad commit is: > > > > commit 9b2e4f1880b789be1f24f9684f7a54b90310b5c0 > >

Re: rcu_dyntick and suspicious RCU usage

2012-07-11 Thread Paul E. McKenney
On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: > Hi Paul, > > Fortunately this bug is bisectable and the first bad commit is: > > commit 9b2e4f1880b789be1f24f9684f7a54b90310b5c0 > Author: Paul E. McKenney > Date: Fri Sep 30 12:10:22 2011 -0700 > >

Re: rcu_dyntick and suspicious RCU usage

2012-07-11 Thread Paul E. McKenney
On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: Hi Paul, Fortunately this bug is bisectable and the first bad commit is: commit 9b2e4f1880b789be1f24f9684f7a54b90310b5c0 Author: Paul E. McKenney paul.mcken...@linaro.org Date: Fri Sep 30 12:10:22 2011

Re: rcu_dyntick and suspicious RCU usage

2012-07-11 Thread Fengguang Wu
On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: Hi Paul, Fortunately this bug is bisectable and the first bad commit is: commit 9b2e4f1880b789be1f24f9684f7a54b90310b5c0 Author: Paul E.

Re: rcu_dyntick and suspicious RCU usage

2012-07-11 Thread Fengguang Wu
On Wed, Jul 11, 2012 at 08:36:16PM +0800, Fengguang Wu wrote: On Wed, Jul 11, 2012 at 12:49:24AM -0700, Paul E. McKenney wrote: On Tue, Jul 10, 2012 at 12:47:00PM +0800, Fengguang Wu wrote: Hi Paul, Fortunately this bug is bisectable and the first bad commit is: commit

Re: rcu_dyntick and suspicious RCU usage

2012-07-09 Thread Fengguang Wu
Hi Paul, Fortunately this bug is bisectable and the first bad commit is: commit 9b2e4f1880b789be1f24f9684f7a54b90310b5c0 Author: Paul E. McKenney Date: Fri Sep 30 12:10:22 2011 -0700 rcu: Track idleness independent of idle tasks However, at that commit,

Re: rcu_dyntick and suspicious RCU usage

2012-07-09 Thread Fengguang Wu
Hi Paul, Fortunately this bug is bisectable and the first bad commit is: commit 9b2e4f1880b789be1f24f9684f7a54b90310b5c0 Author: Paul E. McKenney paul.mcken...@linaro.org Date: Fri Sep 30 12:10:22 2011 -0700 rcu: Track idleness independent of idle tasks