On Wed, Dec 09, 2020 at 10:14:49AM +0800, Boqun Feng wrote:
> Hi Frederic,
>
> On Tue, Dec 08, 2020 at 11:04:38PM +0100, Frederic Weisbecker wrote:
> > On Tue, Dec 08, 2020 at 10:24:09AM -0800, Paul E. McKenney wrote:
> > > > It reduces the code scope running with BH disabled.
> > > > Also
Hi Frederic,
On Tue, Dec 08, 2020 at 11:04:38PM +0100, Frederic Weisbecker wrote:
> On Tue, Dec 08, 2020 at 10:24:09AM -0800, Paul E. McKenney wrote:
> > > It reduces the code scope running with BH disabled.
> > > Also narrowing down helps to understand what it actually protects.
> >
> > I
On Tue, Dec 08, 2020 at 11:04:38PM +0100, Frederic Weisbecker wrote:
> On Tue, Dec 08, 2020 at 10:24:09AM -0800, Paul E. McKenney wrote:
> > > It reduces the code scope running with BH disabled.
> > > Also narrowing down helps to understand what it actually protects.
> >
> > I thought that you
On Tue, Dec 08, 2020 at 10:24:09AM -0800, Paul E. McKenney wrote:
> > It reduces the code scope running with BH disabled.
> > Also narrowing down helps to understand what it actually protects.
>
> I thought that you would call out unnecessarily delaying other softirq
> handlers. ;-)
>
> But if
On Tue, Dec 08, 2020 at 06:52:30PM +0100, Frederic Weisbecker wrote:
> On Tue, Dec 08, 2020 at 09:19:27AM -0800, Paul E. McKenney wrote:
> > On Tue, Dec 08, 2020 at 04:54:57PM +0100, Frederic Weisbecker wrote:
> > > On Tue, Dec 08, 2020 at 06:58:10AM -0800, Paul E. McKenney wrote:
> > > > Hello,
On Tue, Dec 08, 2020 at 09:19:27AM -0800, Paul E. McKenney wrote:
> On Tue, Dec 08, 2020 at 04:54:57PM +0100, Frederic Weisbecker wrote:
> > On Tue, Dec 08, 2020 at 06:58:10AM -0800, Paul E. McKenney wrote:
> > > Hello, Frederic,
> > >
> > > Boqun just asked if RCU callbacks ran in BH-disabled
On Tue, Dec 08, 2020 at 04:54:57PM +0100, Frederic Weisbecker wrote:
> On Tue, Dec 08, 2020 at 06:58:10AM -0800, Paul E. McKenney wrote:
> > Hello, Frederic,
> >
> > Boqun just asked if RCU callbacks ran in BH-disabled context to avoid
> > concurrent execution of the same callback. Of course,
On Tue, Dec 08, 2020 at 06:58:10AM -0800, Paul E. McKenney wrote:
> Hello, Frederic,
>
> Boqun just asked if RCU callbacks ran in BH-disabled context to avoid
> concurrent execution of the same callback. Of course, this raises the
> question of whether a self-posting callback can have two
Hello, Frederic,
Boqun just asked if RCU callbacks ran in BH-disabled context to avoid
concurrent execution of the same callback. Of course, this raises the
question of whether a self-posting callback can have two instances of
itself running concurrently while a CPU is in the process of
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