On Wed, 21 Jan 2015, Paul E. McKenney wrote:
> On Wed, Jan 21, 2015 at 10:30:07AM +0100, Thomas Gleixner wrote:
> > On Tue, 20 Jan 2015, Paul E. McKenney wrote:
> > > On Tue, Jan 20, 2015 at 02:21:51PM +0100, Thomas Gleixner wrote:
> > > > The whole rcu_note_context_switch() in run_ksoftirqd() is s
On Wed, Jan 21, 2015 at 10:30:07AM +0100, Thomas Gleixner wrote:
> On Tue, 20 Jan 2015, Paul E. McKenney wrote:
> > On Tue, Jan 20, 2015 at 02:21:51PM +0100, Thomas Gleixner wrote:
> > > The whole rcu_note_context_switch() in run_ksoftirqd() is silly.
> > >
> > > cond_resched()
> > > __preem
On Tue, 20 Jan 2015, Paul E. McKenney wrote:
> On Tue, Jan 20, 2015 at 02:21:51PM +0100, Thomas Gleixner wrote:
> > The whole rcu_note_context_switch() in run_ksoftirqd() is silly.
> >
> > cond_resched()
> > __preempt_count_add(PREEMPT_ACTIVE);
> >
> > __schedule();
> > preem
On Tue, 2015-01-20 at 21:10 -0800, Paul E. McKenney wrote:
> On Wed, Jan 21, 2015 at 04:40:39AM +0100, Mike Galbraith wrote:
> > I've been curious about this for ages, so now is a great time to bite
> > the bullet and ask TheMan. A context switch is not far away, why do we
> > need that quiescen
On Wed, Jan 21, 2015 at 04:40:39AM +0100, Mike Galbraith wrote:
> On Tue, 2015-01-20 at 12:30 -0800, Paul E. McKenney wrote:
> > On Tue, Jan 20, 2015 at 02:21:51PM +0100, Thomas Gleixner wrote:
>
> > > > diff --git a/kernel/softirq.c b/kernel/softirq.c
> > > > index 501baa9..9e787d8 100644
> > >
On Tue, 2015-01-20 at 12:30 -0800, Paul E. McKenney wrote:
> On Tue, Jan 20, 2015 at 02:21:51PM +0100, Thomas Gleixner wrote:
> > > diff --git a/kernel/softirq.c b/kernel/softirq.c
> > > index 501baa9..9e787d8 100644
> > > --- a/kernel/softirq.c
> > > +++ b/kernel/softirq.c
> > > @@ -656,9 +656,1
On Tue, Jan 20, 2015 at 02:21:51PM +0100, Thomas Gleixner wrote:
> On Tue, 13 Jan 2015, Calvin Owens wrote:
>
> > While debugging an issue with excessive softirq usage, I encountered the
> > following note in commit 3e339b5dae24a706 ("softirq: Use hotplug thread
> > infrastructure"):
> >
> >
On Tue, 13 Jan 2015, Calvin Owens wrote:
> While debugging an issue with excessive softirq usage, I encountered the
> following note in commit 3e339b5dae24a706 ("softirq: Use hotplug thread
> infrastructure"):
>
> [ paulmck: Call rcu_note_context_switch() with interrupts enabled. ]
>
> ...bu
On Tue, Jan 13, 2015 at 01:16:18PM -0800, Calvin Owens wrote:
> While debugging an issue with excessive softirq usage, I encountered the
> following note in commit 3e339b5dae24a706 ("softirq: Use hotplug thread
> infrastructure"):
>
> [ paulmck: Call rcu_note_context_switch() with interrupts e
While debugging an issue with excessive softirq usage, I encountered the
following note in commit 3e339b5dae24a706 ("softirq: Use hotplug thread
infrastructure"):
[ paulmck: Call rcu_note_context_switch() with interrupts enabled. ]
...but despite this note, the patch still calls RCU with IRQs
While debugging an issue with excessive softirq usage, I encountered the
following note in commit 3e339b5dae24a706 ("softirq: Use hotplug thread
infrastructure"):
[ paulmck: Call rcu_note_context_switch() with interrupts enabled. ]
...but despite this note, the patch still calls RCU with IRQs
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