On Fri, Jun 28, 2019 at 02:37:24PM -0500, Scott Wood wrote:
> On Thu, 2019-06-27 at 17:52 -0700, Paul E. McKenney wrote:
> > On Thu, Jun 27, 2019 at 05:46:27PM -0500, Scott Wood wrote:
> > > On Thu, 2019-06-27 at 13:50 -0700, Paul E. McKenney wrote:
> > > > If by IPI-to-self you mean the IRQ work
On Thu, 2019-06-27 at 17:52 -0700, Paul E. McKenney wrote:
> On Thu, Jun 27, 2019 at 05:46:27PM -0500, Scott Wood wrote:
> > On Thu, 2019-06-27 at 13:50 -0700, Paul E. McKenney wrote:
> > > If by IPI-to-self you mean the IRQ work trick, that isn't implemented
> > > across all architectures yet, is
On Thu, Jun 27, 2019 at 05:46:27PM -0500, Scott Wood wrote:
> On Thu, 2019-06-27 at 13:50 -0700, Paul E. McKenney wrote:
> > On Thu, Jun 27, 2019 at 03:16:09PM -0500, Scott Wood wrote:
> > > On Thu, 2019-06-27 at 11:00 -0700, Paul E. McKenney wrote:
> > > > On Wed, Jun 26, 2019 at 11:49:16AM
On Thu, 2019-06-27 at 13:50 -0700, Paul E. McKenney wrote:
> On Thu, Jun 27, 2019 at 03:16:09PM -0500, Scott Wood wrote:
> > On Thu, 2019-06-27 at 11:00 -0700, Paul E. McKenney wrote:
> > > On Wed, Jun 26, 2019 at 11:49:16AM -0500, Scott Wood wrote:
> > > > >
> > > > > On Fri, 21 Jun 2019
On Thu, Jun 27, 2019 at 03:16:09PM -0500, Scott Wood wrote:
> On Thu, 2019-06-27 at 11:00 -0700, Paul E. McKenney wrote:
> > On Wed, Jun 26, 2019 at 11:49:16AM -0500, Scott Wood wrote:
> > > On Wed, 2019-06-26 at 11:08 -0400, Steven Rostedt wrote:
> > > > On Fri, 21 Jun 2019 16:59:55 -0700
> > > >
On Thu, 2019-06-27 at 11:00 -0700, Paul E. McKenney wrote:
> On Wed, Jun 26, 2019 at 11:49:16AM -0500, Scott Wood wrote:
> > On Wed, 2019-06-26 at 11:08 -0400, Steven Rostedt wrote:
> > > On Fri, 21 Jun 2019 16:59:55 -0700
> > > "Paul E. McKenney" wrote:
> > >
> > > > I have no objection to the
On Wed, Jun 26, 2019 at 11:49:16AM -0500, Scott Wood wrote:
> On Wed, 2019-06-26 at 11:08 -0400, Steven Rostedt wrote:
> > On Fri, 21 Jun 2019 16:59:55 -0700
> > "Paul E. McKenney" wrote:
> >
> > > I have no objection to the outlawing of a number of these sequences in
> > > mainline, but am
On Wed, 2019-06-26 at 11:08 -0400, Steven Rostedt wrote:
> On Fri, 21 Jun 2019 16:59:55 -0700
> "Paul E. McKenney" wrote:
>
> > I have no objection to the outlawing of a number of these sequences in
> > mainline, but am rather pointing out that until they really are outlawed
> > and eliminated,
On Fri, 21 Jun 2019 16:59:55 -0700
"Paul E. McKenney" wrote:
> I have no objection to the outlawing of a number of these sequences in
> mainline, but am rather pointing out that until they really are outlawed
> and eliminated, rcutorture must continue to test them in mainline.
> Of course, an
On Fri, Jun 21, 2019 at 06:38:21PM +0200, Sebastian Andrzej Siewior wrote:
> On 2019-06-20 14:18:26 [-0700], Paul E. McKenney wrote:
> > > Example #1:
> > >
> > > 1. preempt_disable()
> > > 2. local_bh_disable()
> > > 3. preempt_enable()
> > > 4. local_bh_enable()
> > >
> > > Example #2:
> > >
On 2019-06-20 14:18:26 [-0700], Paul E. McKenney wrote:
> > Example #1:
> >
> > 1. preempt_disable()
> > 2. local_bh_disable()
> > 3. preempt_enable()
> > 4. local_bh_enable()
> >
> > Example #2:
> >
> > 1. rcu_read_lock()
> > 2. local_irq_disable()
> > 3. rcu_read_unlock()
> > 4.
On Thu, 2019-06-20 at 14:18 -0700, Paul E. McKenney wrote:
> On Tue, Jun 18, 2019 at 08:19:08PM -0500, Scott Wood wrote:
> > rcutorture was generating some nesting scenarios that are not
> > reasonable. Constrain the state selection to avoid them.
> >
> > Example #1:
> >
> > 1.
On Tue, Jun 18, 2019 at 08:19:08PM -0500, Scott Wood wrote:
> rcutorture was generating some nesting scenarios that are not
> reasonable. Constrain the state selection to avoid them.
>
> Example #1:
>
> 1. preempt_disable()
> 2. local_bh_disable()
> 3. preempt_enable()
> 4. local_bh_enable()
>
rcutorture was generating some nesting scenarios that are not
reasonable. Constrain the state selection to avoid them.
Example #1:
1. preempt_disable()
2. local_bh_disable()
3. preempt_enable()
4. local_bh_enable()
On PREEMPT_RT, BH disabling takes a local lock only when called in
non-atomic
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