On Tue, Oct 07, 2014 at 03:50:45PM +, Liang, Kan wrote:
> The data is originally from br_stack which is LBR format.
Right, its read from the LBR, therefore this must be.
> What the patch did is to convert it to CALLCHAIN output format in kernel.
I saw that.
> So you'd like to let the kernel
> > > So I don't like this. Why not use the regular
> > > PERF_SAMPLE_BRANCH_STACK output to generate the stuff from? We
> > > already have two different means, with different transport, for callchains
> anyhow, so a third really won't matter.
> >
> > I'm not sure what you mean by using the regul
I think you're going to have to stop using outlook or whatnot, this is
horrible.
On Tue, Oct 07, 2014 at 03:00:00AM +, Liang, Kan wrote:
> > -Original Message-
> > From: Peter Zijlstra [mailto:pet...@infradead.org]
> > So I don't like this. Why not use the regular PERF_SAMPLE_BRANCH_S
el.com; Yan, Zheng
> Subject: Re: [PATCH V5 11/16] perf, core: Pass perf_sample_data to
> perf_callchain()
>
> On Wed, Sep 10, 2014 at 10:09:08AM -0400, kan.li...@intel.com wrote:
> > From: Kan Liang
> >
> > Haswell has a new feature that utilizes the existing Last Branch
On Wed, Sep 10, 2014 at 10:09:08AM -0400, kan.li...@intel.com wrote:
> From: Kan Liang
>
> Haswell has a new feature that utilizes the existing Last Branch Record
> facility to record call chains. When the feature is enabled, function
> call will be collected as normal, but as return instructions
From: Kan Liang
Haswell has a new feature that utilizes the existing Last Branch Record
facility to record call chains. When the feature is enabled, function
call will be collected as normal, but as return instructions are
executed the last captured branch record is popped from the on-chip LBR
re
From: Kan Liang
Haswell has a new feature that utilizes the existing Last Branch Record
facility to record call chains. When the feature is enabled, function
call will be collected as normal, but as return instructions are
executed the last captured branch record is popped from the on-chip LBR
re
Haswell has a new feature that utilizes the existing Last Branch Record
facility to record call chains. When the feature is enabled, function
call will be collected as normal, but as return instructions are executed
the last captured branch record is popped from the on-chip LBR registers.
The LBR c
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