lkml.org 
[lkml]   [2021]   [Jul]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] perf cs-etm: Delay decode of non-timeless data until cs_etm__flush_events()
Em Mon, Jun 14, 2021 at 09:54:42AM -0600, Mathieu Poirier escreveu:
> On Wed, Jun 09, 2021 at 04:04:20PM +0300, James Clark wrote:
> > Currently, timeless mode starts the decode on PERF_RECORD_EXIT, and
> > non-timeless mode starts decoding on the fist PERF_RECORD_AUX record.
> >
> > This can cause the "data has no samples!" error if the first
> > PERF_RECORD_AUX record comes before the first (or any relevant)
> > PERF_RECORD_MMAP2 record because the mmaps are required by the decoder
> > to access the binary data.
> >
> > This change pushes the start of non-timeless decoding to the very end of
> > parsing the file. The PERF_RECORD_EXIT event can't be used because it
> > might not exist in system-wide or snapshot modes.

<SNIP>

> This looks good to me but I'd like to have other people testing it.

So Leo reviewed and tested this, I'm taking your "looks good to me" as
an Acked-by, as per Documentation/process/submitting-patches.rst.

- Arnaldo

> Thanks,
> Mathieu

\
 
 \ /
  Last update: 2021-07-01 19:16    [W:0.118 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site