Re: [PATCH 0/9] perf: Adding better precise_ip field handling

[Peter Zijlstra]

On Thu, May 09, 2013 at 05:20:22PM +0200, Jiri Olsa wrote:
> On Thu, May 09, 2013 at 05:07:44PM +0200, Peter Zijlstra wrote:
> > On Thu, May 09, 2013 at 03:32:15PM +0200, Jiri Olsa wrote:
> > > hi,
> > > adding sysfs attribute to specify the maximum allowed value
> > > for perf_event_attr::precise_ip field.
> > > 
> > > Adding functionality for simple 'p' modifier and 'precise' term
> > > to get the maximum allowed value for perf_event_attr::precise_ip
> > > field.
> > > 
> > 
> > You've seem to lost the part explaining why we want this.. :-)
> 
> well, initially it was an answer when we broke precise event
> monitoring in kernel so I wrote automated test for it (patches 1,2,3)
> https://lkml.org/lkml/2012/12/12/561

Oh urgh 1-3 aren't just tests; they introduce all this nonsense already :/
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