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From: Ian Rogers <irogers@google.com>
To: Namhyung Kim <namhyung@kernel.org>,
	Jin Yao <yao.jin@linux.intel.com>,
	Andi Kleen <ak@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
	Jiri Olsa <jolsa@redhat.com>, Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Stephane Eranian <eranian@google.com>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCHSET v2 00/11] perf tools: Fix various memory leaks
Date: Mon, 14 Sep 2020 22:15:11 -0700
Message-ID: <CAP-5=fXejVaQa9qfW66cY77qB962+jbe8tT5bsLoOOcFmODnWQ@mail.gmail.com> (raw)
In-Reply-To: <20200915031819.386559-1-namhyung@kernel.org>

On Mon, Sep 14, 2020 at 8:18 PM Namhyung Kim <namhyung@kernel.org> wrote:
>
> Hello,
>
> I've found and fixed a bunch of memory leaks during perf pmu and
> metric tests with address sanitizer.  Before this, the tests were
> mostly failed due to the leaks since ASAN makes it return non-zero.
>
> Now I'm seeing no error with ASAN like below:
>
>   $ ./perf test pmu metric
>    9: Parse perf pmu format                                 : Ok
>   10: PMU events                                            :
>   10.1: PMU event table sanity                              : Ok
>   10.2: PMU event map aliases                               : Ok
>   10.3: Parsing of PMU event table metrics                  : Skip (some metrics failed)
>   10.4: Parsing of PMU event table metrics with fake PMUs   : Ok
>   67: Parse and process metrics                             : Ok
>
> The failure in 10.3 seems due to parse errors like below:
>
>   Multiple errors dropping message: unknown term 'filter_opc' for pmu 'uncore_cbox_0'
>   (valid terms: event,edge,inv,umask,cmask,config,config1,config2,name,period,freq,
>                 branch_type,time,call-graph,stack-size,no-inherit,inherit,max-stack,
>                 nr,no-overwrite,overwrite,driver-config,percore,aux-output,aux-sample-size)
>
>
>   Parse event failed metric 'DRAM_Parallel_Reads' id 'arb/event=0x80,umask=0x2,thresh=1/'
>     expr 'arb@event\=0x80\,umask\=0x2@ / arb@event\=0x80\,umask\=0x2\,thresh\=1@'
>   Error string 'unknown term 'thresh' for pmu 'uncore_arb'' help
>     'valid terms: event,edge,inv,umask,cmask,config,config1,config2,name,period,freq,
>                   branch_type,time,call-graph,stack-size,no-inherit,inherit,max-stack,
>                   nr,no-overwrite,overwrite,driver-config,percore,aux-output,aux-sample-size'

The 10.3 failure seems to be a problem in the skl metric DRAM_Parallel_Reads:
https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/tree/tools/perf/pmu-events/arch/x86/skylake/skl-metrics.json?h=perf/core#n319
arb@event\\=0x80\\,umask\\=0x2@ / arb@event\\=0x80\\,umask\\=0x2\\,thresh\\=1@

The test failure message is:
Parse event failed metric 'DRAM_Parallel_Reads' id
'arb/event=0x80,umask=0x2,thresh=1/' expr
'arb@event\=0x80\,umask\=0x2@ /
arb@event\=0x80\,umask\=0x2\,thresh\=1@'
Error string 'unknown term 'thresh' for pmu 'uncore_arb'' help 'valid
terms: event,edge,inv,umask,cmask,config,config1,config2,name,period,freq,branch_type,time,call-graph,stack-size,no-inherit,inherit,max-stack,nr,no-overwrite,overwrite,driver-config,percore,aux-output,aux-sample-size'

The 01.org version of this from:
https://download.01.org/perfmon/TMA_Metrics.xlsx
is:
UNC_ARB_TRK_OCCUPANCY.DATA_READ / UNC_ARB_TRK_OCCUPANCY.DATA_READ:c1

It seems that :c1 has been translated into thresh=1 but that thresh
doesn't exist as a format option (just "cmask edge event inv umask"
are present). I wonder if Andi or Jin you could look into this broken
metric?

Thanks,
Ian

> * Changes from v1:
>  - Add 'Acked-by: Jiri'
>
>
> The patches are also available at 'perf/metric-fix-v2' branch on
>
>   git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git
>
> Thanks
> Namhyung
>
>
> Namhyung Kim (11):
>   perf metric: Fix some memory leaks
>   perf metric: Fix some memory leaks - part 2
>   perf evlist: Fix cpu/thread map leak
>   perf parse-event: Fix cpu map leaks
>   perf parse-event: Fix memory leak in evsel->unit
>   perf test: Fix memory leaks in parse-metric test
>   perf metric: Release expr_parse_ctx after testing
>   perf metric: Free metric when it failed to resolve
>   perf metric: Do not free metric when failed to resolve
>   perf test: Free aliases for PMU event map aliases test
>   perf test: Free formats for perf pmu parse test
>
>  tools/perf/tests/parse-metric.c | 14 ++++++++-----
>  tools/perf/tests/pmu-events.c   |  5 +++++
>  tools/perf/tests/pmu.c          |  1 +
>  tools/perf/util/evlist.c        | 11 ++++++++---
>  tools/perf/util/metricgroup.c   | 35 +++++++++++++++++++++++----------
>  tools/perf/util/parse-events.c  |  9 +++++++--
>  tools/perf/util/pmu.c           | 13 +++++++++++-
>  tools/perf/util/pmu.h           |  2 ++
>  tools/perf/util/stat-shadow.c   |  8 +++++---
>  9 files changed, 74 insertions(+), 24 deletions(-)
>
> --
> 2.28.0.618.gf4bc123cb7-goog
>

  parent reply index

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-15  3:18 Namhyung Kim
2020-09-15  3:18 ` [PATCH 01/11] perf metric: Fix some " Namhyung Kim
2020-09-15 11:58   ` Arnaldo Carvalho de Melo
2020-09-15  3:18 ` [PATCH 02/11] perf metric: Fix some memory leaks - part 2 Namhyung Kim
2020-09-15 11:59   ` Arnaldo Carvalho de Melo
2020-09-15  3:18 ` [PATCH 03/11] perf evlist: Fix cpu/thread map leak Namhyung Kim
2020-09-15  3:18 ` [PATCH 04/11] perf parse-event: Fix cpu map leaks Namhyung Kim
2020-09-15 12:18   ` Arnaldo Carvalho de Melo
2020-09-15 14:39     ` Namhyung Kim
2020-09-15 16:51       ` Arnaldo Carvalho de Melo
2020-09-15  3:18 ` [PATCH 05/11] perf parse-event: Fix memory leak in evsel->unit Namhyung Kim
2020-09-15 12:19   ` Arnaldo Carvalho de Melo
2020-09-15 18:59     ` Ian Rogers
2020-09-15 19:56       ` David Malcolm
2020-09-16  7:12         ` Namhyung Kim
2020-09-16 18:37           ` Ian Rogers
2020-09-15 20:03       ` Arnaldo Carvalho de Melo
2020-09-15  3:18 ` [PATCH 06/11] perf test: Fix memory leaks in parse-metric test Namhyung Kim
2020-09-15 12:23   ` Arnaldo Carvalho de Melo
2020-09-15  3:18 ` [PATCH 07/11] perf metric: Release expr_parse_ctx after testing Namhyung Kim
2020-09-15  3:18 ` [PATCH 08/11] perf metric: Free metric when it failed to resolve Namhyung Kim
2020-09-15 12:24   ` Arnaldo Carvalho de Melo
2020-09-15  3:18 ` [PATCH 09/11] perf metric: Do not free metric when " Namhyung Kim
2020-09-15  3:18 ` [PATCH 10/11] perf test: Free aliases for PMU event map aliases test Namhyung Kim
2020-09-15  7:37   ` John Garry
2020-09-15 11:57     ` Arnaldo Carvalho de Melo
2020-09-15  3:18 ` [PATCH 11/11] perf test: Free formats for perf pmu parse test Namhyung Kim
2020-09-15  5:15 ` Ian Rogers [this message]
2020-09-15 14:49   ` [PATCHSET v2 00/11] perf tools: Fix various memory leaks Namhyung Kim

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