Re: [PATCH v3] perf report: Set PERF_SAMPLE_DATA_SRC bit for Arm SPE event

[Leo Yan]

On Mon, Apr 18, 2022 at 06:56:26PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Thu, Apr 14, 2022 at 08:32:01PM +0800, Leo Yan escreveu:
> > Since commit bb30acae4c4d ("perf report: Bail out --mem-mode if mem info
> > is not available") "perf mem report" and "perf report --mem-mode"
> > don't report result if the PERF_SAMPLE_DATA_SRC bit is missed in sample
> > type.
> > 
> > The commit ffab48705205 ("perf: arm-spe: Fix perf report --mem-mode")
> > partially fixes the issue.  It adds PERF_SAMPLE_DATA_SRC bit for Arm SPE
> > event, this allows the perf data file generated by kernel v5.18-rc1 or
> > later version can be reported properly.
> > 
> > On the other hand, perf tool still fails to be backward compatibility
> > for a data file recorded by an older version's perf which contains Arm
> > SPE trace data.  This patch is a workaround in reporting phase, when
> > detects ARM SPE PMU event and without PERF_SAMPLE_DATA_SRC bit, it will
> > force to set the bit in the sample type and give a warning info.
> 
> Thanks, applied.

Thank you, Arnaldo!

Leo