On 17.02.20 15:23, Igor Druzhinin wrote:
On 17/02/2020 12:30, Igor Druzhinin wrote:
On 17/02/2020 12:28, Jürgen Groß wrote:
On 17.02.20 13:26, Igor Druzhinin wrote:
On 17/02/2020 07:20, Juergen Gross wrote:
Today rcu_barrier() is calling stop_machine_run() to synchronize all
physical cpus in
On 17/02/2020 12:30, Igor Druzhinin wrote:
> On 17/02/2020 12:28, Jürgen Groß wrote:
>> On 17.02.20 13:26, Igor Druzhinin wrote:
>>> On 17/02/2020 07:20, Juergen Gross wrote:
Today rcu_barrier() is calling stop_machine_run() to synchronize all
physical cpus in order to ensure all pending
On 17.02.20 14:47, Roger Pau Monné wrote:
On Mon, Feb 17, 2020 at 02:17:23PM +0100, Jürgen Groß wrote:
On 17.02.20 13:49, Roger Pau Monné wrote:
On Mon, Feb 17, 2020 at 01:32:59PM +0100, Jürgen Groß wrote:
On 17.02.20 13:17, Roger Pau Monné wrote:
On Mon, Feb 17, 2020 at 01:11:59PM +0100,
On Mon, Feb 17, 2020 at 02:17:23PM +0100, Jürgen Groß wrote:
> On 17.02.20 13:49, Roger Pau Monné wrote:
> > On Mon, Feb 17, 2020 at 01:32:59PM +0100, Jürgen Groß wrote:
> > > On 17.02.20 13:17, Roger Pau Monné wrote:
> > > > On Mon, Feb 17, 2020 at 01:11:59PM +0100, Jürgen Groß wrote:
> > > > >
On 17.02.20 13:49, Roger Pau Monné wrote:
On Mon, Feb 17, 2020 at 01:32:59PM +0100, Jürgen Groß wrote:
On 17.02.20 13:17, Roger Pau Monné wrote:
On Mon, Feb 17, 2020 at 01:11:59PM +0100, Jürgen Groß wrote:
On 17.02.20 12:49, Julien Grall wrote:
Hi Juergen,
On 17/02/2020 07:20, Juergen Gross
On Mon, Feb 17, 2020 at 01:32:59PM +0100, Jürgen Groß wrote:
> On 17.02.20 13:17, Roger Pau Monné wrote:
> > On Mon, Feb 17, 2020 at 01:11:59PM +0100, Jürgen Groß wrote:
> > > On 17.02.20 12:49, Julien Grall wrote:
> > > > Hi Juergen,
> > > >
> > > > On 17/02/2020 07:20, Juergen Gross wrote:
> >
On 17.02.20 13:17, Roger Pau Monné wrote:
On Mon, Feb 17, 2020 at 01:11:59PM +0100, Jürgen Groß wrote:
On 17.02.20 12:49, Julien Grall wrote:
Hi Juergen,
On 17/02/2020 07:20, Juergen Gross wrote:
+void rcu_barrier(void)
{
- atomic_t cpu_count = ATOMIC_INIT(0);
- return
On 17/02/2020 12:28, Jürgen Groß wrote:
> On 17.02.20 13:26, Igor Druzhinin wrote:
>> On 17/02/2020 07:20, Juergen Gross wrote:
>>> Today rcu_barrier() is calling stop_machine_run() to synchronize all
>>> physical cpus in order to ensure all pending rcu calls have finished
>>> when returning.
>>>
On 17.02.20 13:26, Igor Druzhinin wrote:
On 17/02/2020 07:20, Juergen Gross wrote:
Today rcu_barrier() is calling stop_machine_run() to synchronize all
physical cpus in order to ensure all pending rcu calls have finished
when returning.
As stop_machine_run() is using tasklets this requires
On 17/02/2020 07:20, Juergen Gross wrote:
> Today rcu_barrier() is calling stop_machine_run() to synchronize all
> physical cpus in order to ensure all pending rcu calls have finished
> when returning.
>
> As stop_machine_run() is using tasklets this requires scheduling of
> idle vcpus on all
On Mon, Feb 17, 2020 at 01:11:59PM +0100, Jürgen Groß wrote:
> On 17.02.20 12:49, Julien Grall wrote:
> > Hi Juergen,
> >
> > On 17/02/2020 07:20, Juergen Gross wrote:
> > > +void rcu_barrier(void)
> > > {
> > > - atomic_t cpu_count = ATOMIC_INIT(0);
> > > - return
On 17.02.20 12:49, Julien Grall wrote:
Hi Juergen,
On 17/02/2020 07:20, Juergen Gross wrote:
+void rcu_barrier(void)
{
- atomic_t cpu_count = ATOMIC_INIT(0);
- return stop_machine_run(rcu_barrier_action, _count, NR_CPUS);
+ if ( !atomic_cmpxchg(_count, 0, num_online_cpus()) )
What
Hi Juergen,
On 17/02/2020 07:20, Juergen Gross wrote:
Today rcu_barrier() is calling stop_machine_run() to synchronize all
physical cpus in order to ensure all pending rcu calls have finished
when returning.
As stop_machine_run() is using tasklets this requires scheduling of
idle vcpus on all
Today rcu_barrier() is calling stop_machine_run() to synchronize all
physical cpus in order to ensure all pending rcu calls have finished
when returning.
As stop_machine_run() is using tasklets this requires scheduling of
idle vcpus on all cpus imposing the need to call rcu_barrier() on idle
cpus
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