From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Nicholas Fraser <nfraser@codeweavers.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Ian Rogers <irogers@google.com>,
"Frank Ch. Eigler" <fche@redhat.com>,
Song Liu <songliubraving@fb.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Kim Phillips <kim.phillips@amd.com>,
Tommi Rantala <tommi.t.rantala@nokia.com>,
Remi Bernon <rbernon@codeweavers.com>,
linux-kernel@vger.kernel.org,
Ulrich Czekalla <uczekalla@codeweavers.com>,
Huw Davies <huw@codeweavers.com>
Subject: Re: [PATCH 3/4] perf archive: Fix filtering of empty build-ids
Date: Fri, 12 Feb 2021 09:29:01 -0300 [thread overview]
Message-ID: <20210212122901.GB1398414@kernel.org> (raw)
In-Reply-To: <7708cca1-b8f6-c394-75f1-5f9681d625d0@codeweavers.com>
Em Wed, Feb 10, 2021 at 02:17:49PM -0500, Nicholas Fraser escreveu:
> A non-existent build-id used to be treated as all-zero SHA-1 hash.
> Build-ids are now variable width. A non-existent build-id is an empty
> string and "perf buildid-list" pads this with spaces.
>
> This fixes "perf-archive" to skip missing build-ids by skipping lines
> that start with a padding space rather than with zeroes.
>
> Signed-off-by: Nicholas Fraser <nfraser@codeweavers.com>
> ---
> tools/perf/perf-archive.sh | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/tools/perf/perf-archive.sh b/tools/perf/perf-archive.sh
> index 0cfb3e2cefef..133f0eddbcc4 100644
> --- a/tools/perf/perf-archive.sh
> +++ b/tools/perf/perf-archive.sh
> @@ -20,9 +20,8 @@ else
> fi
>
> BUILDIDS=$(mktemp /tmp/perf-archive-buildids.XXXXXX)
> -NOBUILDID=0000000000000000000000000000000000000000
>
> -perf buildid-list -i $PERF_DATA --with-hits | grep -v "^$NOBUILDID " > $BUILDIDS
> +perf buildid-list -i $PERF_DATA --with-hits | grep -v "^ " > $BUILDIDS
> if [ ! -s $BUILDIDS ] ; then
> echo "perf archive: no build-ids found"
> rm $BUILDIDS || true
What should we do when using older files? We have to support both cases.
- Arnaldo
next prev parent reply other threads:[~2021-02-12 12:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-10 19:17 [PATCH 3/4] perf archive: Fix filtering of empty build-ids Nicholas Fraser
2021-02-12 12:29 ` Arnaldo Carvalho de Melo [this message]
2021-02-12 18:49 ` Nicholas Fraser
2021-02-12 21:07 ` Arnaldo Carvalho de Melo
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