On Fri, Jul 28, 2017 at 08:35:16PM -0700, Andy Lutomirski wrote:
> I haven't checked task_work specifically, but a bunch of the exit work
> is permitted to sleep, which is potentially useful.
Yes.
> If this becomes successful enough that we could eventually deprecate
> the old code, I wonder if
On Fri, Jul 28, 2017 at 08:35:16PM -0700, Andy Lutomirski wrote:
> I haven't checked task_work specifically, but a bunch of the exit work
> is permitted to sleep, which is potentially useful.
Yes.
> If this becomes successful enough that we could eventually deprecate
> the old code, I wonder if
> On Jul 25, 2017, at 7:55 AM, Peter Zijlstra wrote:
>
>> On Thu, Jul 13, 2017 at 11:19:11AM +0200, Ingo Molnar wrote:
>>
>> * Peter Zijlstra wrote:
>>
One gloriously ugly hack would be to delay the userspace unwind to
return-to-userspace, at
> On Jul 25, 2017, at 7:55 AM, Peter Zijlstra wrote:
>
>> On Thu, Jul 13, 2017 at 11:19:11AM +0200, Ingo Molnar wrote:
>>
>> * Peter Zijlstra wrote:
>>
One gloriously ugly hack would be to delay the userspace unwind to
return-to-userspace, at which point we have a schedulable context
On Fri, Jul 28, 2017 at 04:13:25PM +0200, Jiri Olsa wrote:
> On Tue, Jul 25, 2017 at 01:55:12PM +0200, Peter Zijlstra wrote:
>
> SNIP
>
> >
> > diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
> > index 1b2be63c8528..c98a12f3592c 100644
> > --- a/kernel/events/callchain.c
> >
On Fri, Jul 28, 2017 at 04:13:25PM +0200, Jiri Olsa wrote:
> On Tue, Jul 25, 2017 at 01:55:12PM +0200, Peter Zijlstra wrote:
>
> SNIP
>
> >
> > diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
> > index 1b2be63c8528..c98a12f3592c 100644
> > --- a/kernel/events/callchain.c
> >
On Tue, Jul 25, 2017 at 01:55:12PM +0200, Peter Zijlstra wrote:
SNIP
>
> diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
> index 1b2be63c8528..c98a12f3592c 100644
> --- a/kernel/events/callchain.c
> +++ b/kernel/events/callchain.c
> @@ -12,6 +12,7 @@
> #include
> #include
On Tue, Jul 25, 2017 at 01:55:12PM +0200, Peter Zijlstra wrote:
SNIP
>
> diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
> index 1b2be63c8528..c98a12f3592c 100644
> --- a/kernel/events/callchain.c
> +++ b/kernel/events/callchain.c
> @@ -12,6 +12,7 @@
> #include
> #include
On Thu, Jul 13, 2017 at 11:19:11AM +0200, Ingo Molnar wrote:
>
> * Peter Zijlstra wrote:
>
> > > One gloriously ugly hack would be to delay the userspace unwind to
> > > return-to-userspace, at which point we have a schedulable context and can
> > > take
> > > faults.
>
On Thu, Jul 13, 2017 at 11:19:11AM +0200, Ingo Molnar wrote:
>
> * Peter Zijlstra wrote:
>
> > > One gloriously ugly hack would be to delay the userspace unwind to
> > > return-to-userspace, at which point we have a schedulable context and can
> > > take
> > > faults.
>
> I don't think it's
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