On Thu, Oct 03, 2013 at 08:43:51AM +0200, Ingo Molnar wrote:
> If you find time to send an updated version that boots then I can try to
> trace it to figure out where it fails, if it still fails.
Can you give the below a spin?
---
Subject: perf: Fix the perf context switch optimization
From: Pet
* Peter Zijlstra wrote:
> On Wed, Oct 02, 2013 at 02:29:01PM +0200, Ingo Molnar wrote:
> >
> > Btw., this does not seem to be working very well when the perf context is
> > inherited:
>
> https://lkml.org/lkml/2011/7/21/124
>
> Never figured that one out :-(
Hm, maybe the various fixes over
On Wed, Oct 02, 2013 at 02:29:01PM +0200, Ingo Molnar wrote:
>
> Btw., this does not seem to be working very well when the perf context is
> inherited:
https://lkml.org/lkml/2011/7/21/124
Never figured that one out :-(
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* Peter Zijlstra wrote:
> On Wed, Oct 02, 2013 at 12:29:56PM +0200, Frederic Weisbecker wrote:
> > On Wed, Oct 02, 2013 at 12:03:50PM +0200, Peter Zijlstra wrote:
> > > On Tue, Oct 01, 2013 at 10:11:56PM +0300, Adrian Hunter wrote:
> > > > Hi
> > > >
> > > > It does not seem possible to use set
On Wed, Oct 02, 2013 at 01:27:30PM +0200, Peter Zijlstra wrote:
> On Wed, Oct 02, 2013 at 12:29:56PM +0200, Frederic Weisbecker wrote:
> > On Wed, Oct 02, 2013 at 12:03:50PM +0200, Peter Zijlstra wrote:
> > > On Tue, Oct 01, 2013 at 10:11:56PM +0300, Adrian Hunter wrote:
> > > > Hi
> > > >
> > > >
On Wed, Oct 02, 2013 at 12:29:56PM +0200, Frederic Weisbecker wrote:
> On Wed, Oct 02, 2013 at 12:03:50PM +0200, Peter Zijlstra wrote:
> > On Tue, Oct 01, 2013 at 10:11:56PM +0300, Adrian Hunter wrote:
> > > Hi
> > >
> > > It does not seem possible to use set-output between
> > > task contexts of
On Wed, Oct 02, 2013 at 12:03:50PM +0200, Peter Zijlstra wrote:
> On Tue, Oct 01, 2013 at 10:11:56PM +0300, Adrian Hunter wrote:
> > Hi
> >
> > It does not seem possible to use set-output between
> > task contexts of different types (e.g. a software event
> > to a hardware event)
> >
> > If you l
On Tue, Oct 01, 2013 at 10:11:56PM +0300, Adrian Hunter wrote:
> Hi
>
> It does not seem possible to use set-output between
> task contexts of different types (e.g. a software event
> to a hardware event)
>
> If you look at perf_event_set_output():
>
> /*
>* If its not a pe
Hi
It does not seem possible to use set-output between
task contexts of different types (e.g. a software event
to a hardware event)
If you look at perf_event_set_output():
/*
* If its not a per-cpu rb, it must be the same task.
*/
if (output_event->cpu
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