On Tue, Oct 08, 2019 at 11:25:01AM -0400, Liang, Kan wrote:
> > The perf tool bloody sets the perf_event_attr::branch_sample_type value!
> > Of course it knows to expect the TOS field when it asks for it in the
> > first place.
> >
>
> Users may generate the perf.data on one machine, and parse
On 10/8/2019 10:38 AM, Peter Zijlstra wrote:
On Tue, Oct 08, 2019 at 09:53:24AM -0400, Liang, Kan wrote:
On 10/8/2019 4:31 AM, Peter Zijlstra wrote:
On Mon, Oct 07, 2019 at 10:59:01AM -0700, kan.li...@linux.intel.com wrote:
diff --git a/include/linux/perf_event.h
On Tue, Oct 08, 2019 at 09:53:24AM -0400, Liang, Kan wrote:
>
>
> On 10/8/2019 4:31 AM, Peter Zijlstra wrote:
> > On Mon, Oct 07, 2019 at 10:59:01AM -0700, kan.li...@linux.intel.com wrote:
> > > diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
> > > index
On 10/8/2019 4:31 AM, Peter Zijlstra wrote:
On Mon, Oct 07, 2019 at 10:59:01AM -0700, kan.li...@linux.intel.com wrote:
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 61448c19a132..ee9ef0c4cb08 100644
--- a/include/linux/perf_event.h
+++
On Mon, Oct 07, 2019 at 10:59:01AM -0700, kan.li...@linux.intel.com wrote:
> diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
> index 61448c19a132..ee9ef0c4cb08 100644
> --- a/include/linux/perf_event.h
> +++ b/include/linux/perf_event.h
> @@ -100,6 +100,7 @@ struct
From: Kan Liang
In LBR call stack mode, the depth of reconstructed LBR call stack limits
to the number of LBR registers. With LBR Top-of-Stack (TOS) information,
perf tool may stitch the stacks of two samples. The reconstructed LBR
call stack can break the HW limitation.
Add a new sample type
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