Re: 4.2-rc5 rcu stalls.

2015-08-05 Thread Dave Jones
On Wed, Aug 05, 2015 at 02:37:59PM +0200, Frederic Weisbecker wrote: > On Tue, Aug 04, 2015 at 08:12:50PM -0400, Dave Jones wrote: > > On Tue, Aug 04, 2015 at 12:54:35AM -0400, Sasha Levin wrote: > > > On 08/03/2015 06:03 PM, Paul E. McKenney wrote: > > > >> > Ugh, that doesn't revert cleanly

Re: 4.2-rc5 rcu stalls.

2015-08-05 Thread Dave Jones
On Wed, Aug 05, 2015 at 04:38:14PM +0200, Frederic Weisbecker wrote: > > > Also did you just launch trinity? no specific options? > > > > basically > > > > while [ 1 ]; > > do > > trinity -N 100 -q -l off -C256 -a64 -x fsync -x fdatasync -x syncfs > > -x sync -P INET --enable-f

Re: 4.2-rc5 rcu stalls.

2015-08-05 Thread Frederic Weisbecker
On Wed, Aug 05, 2015 at 09:18:57AM -0400, Dave Jones wrote: > On Wed, Aug 05, 2015 at 02:37:59PM +0200, Frederic Weisbecker wrote: > > On Tue, Aug 04, 2015 at 08:12:50PM -0400, Dave Jones wrote: > > > On Tue, Aug 04, 2015 at 12:54:35AM -0400, Sasha Levin wrote: > > > > On 08/03/2015 06:03 PM, P

Re: 4.2-rc5 rcu stalls.

2015-08-05 Thread Dave Jones
On Wed, Aug 05, 2015 at 02:37:59PM +0200, Frederic Weisbecker wrote: > On Tue, Aug 04, 2015 at 08:12:50PM -0400, Dave Jones wrote: > > On Tue, Aug 04, 2015 at 12:54:35AM -0400, Sasha Levin wrote: > > > On 08/03/2015 06:03 PM, Paul E. McKenney wrote: > > > >> > Ugh, that doesn't revert cleanly

Re: 4.2-rc5 rcu stalls.

2015-08-05 Thread Frederic Weisbecker
On Tue, Aug 04, 2015 at 08:12:50PM -0400, Dave Jones wrote: > On Tue, Aug 04, 2015 at 12:54:35AM -0400, Sasha Levin wrote: > > On 08/03/2015 06:03 PM, Paul E. McKenney wrote: > > >> > Ugh, that doesn't revert cleanly. Got something handy ? > > > I do not, but perhaps either Sasha or Frederic do

Re: 4.2-rc5 rcu stalls.

2015-08-04 Thread Dave Jones
On Tue, Aug 04, 2015 at 12:54:35AM -0400, Sasha Levin wrote: > On 08/03/2015 06:03 PM, Paul E. McKenney wrote: > >> > Ugh, that doesn't revert cleanly. Got something handy ? > > I do not, but perhaps either Sasha or Frederic do. > > I've attached a revert courtesy of Peter. Thanks. At firs

Re: 4.2-rc5 rcu stalls.

2015-08-03 Thread Sasha Levin
On 08/03/2015 06:03 PM, Paul E. McKenney wrote: >> > Ugh, that doesn't revert cleanly. Got something handy ? > I do not, but perhaps either Sasha or Frederic do. I've attached a revert courtesy of Peter. Thanks, Sasha include/linux/preempt.h | 12 kernel/sched/core.c | 34 +++

Re: 4.2-rc5 rcu stalls.

2015-08-03 Thread Paul E. McKenney
On Mon, Aug 03, 2015 at 05:55:35PM -0400, Dave Jones wrote: > Content analysis details: (-2.9 points, 5.0 required) > > pts rule name description > -- > -- > -1.0 ALL_TRUSTEDPassed through tru

Re: 4.2-rc5 rcu stalls.

2015-08-03 Thread Dave Jones
On Mon, Aug 03, 2015 at 02:37:23PM -0700, Paul E. McKenney wrote: > On Mon, Aug 03, 2015 at 05:08:35PM -0400, Dave Jones wrote: > > [ 2120.855128] Tasks blocked on level-0 rcu_node (CPUs 0-3): P1497 > > [ 2120.855263] (detected by 2, t=65002 jiffies, g=78835, c=78834, q=0) > > [ 2120.85

Re: 4.2-rc5 rcu stalls.

2015-08-03 Thread Paul E. McKenney
On Mon, Aug 03, 2015 at 05:08:35PM -0400, Dave Jones wrote: > Content analysis details: (-2.9 points, 5.0 required) > > pts rule name description > -- > -- > -1.0 ALL_TRUSTEDPassed through tru

4.2-rc5 rcu stalls.

2015-08-03 Thread Dave Jones
[ 2120.854974] INFO: rcu_preempt detected stalls on CPUs/tasks: [ 2120.855128] Tasks blocked on level-0 rcu_node (CPUs 0-3): P1497 [ 2120.855263] (detected by 2, t=65002 jiffies, g=78835, c=78834, q=0) [ 2120.855403] trinity-watchdo R running task14336 1497 1496 0x0008 [ 2120.855563]