linux-kernel - Re: [PATCH v1 0/6] perf cs-etm: Fix tracing packet handling and minor refactoring

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Message-ID: <20180619181943.GL20477@kernel.org>
Date:   Tue, 19 Jun 2018 15:19:43 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>
Cc:     Leo Yan <leo.yan@...aro.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Mike Leach <mike.leach@...aro.org>,
        Robert Walker <robert.walker@....com>,
        Kim Phillips <kim.phillips@....com>
Subject: Re: [PATCH v1 0/6] perf cs-etm: Fix tracing packet handling and
 minor refactoring

Em Tue, Jun 19, 2018 at 11:46:02AM -0600, Mathieu Poirier escreveu:
> On Sun, 17 Jun 2018 at 23:10, Leo Yan <leo.yan@...aro.org> wrote:
> >
> > Due the current code is missing to handle cs-etm start tracing packet
> > and CS_ETM_TRACE_ON packet, we fail to generate branch sample for them.
> >
> > This patch series is to fix cs-etm tracing packet handling:
> >
> > Patch 0001 is to add invalid address macro for readable coding;
> >
> > Patch 0002 is one minor fixing to return error code for instruction
> > sample failure;
> >
> > Patches 0003~0006 are fixing patches for start tracing packet
> > and CS_ETM_TRACE_ON packet.
> >
> > This patch series is applied on acme tree [1] on branch perf/core with
> > latest commit: e238cf2e3d2e ("perf intel-pt: Fix packet decoding of CYC
> > packets").  Also applied successfully this patch series on Linus tree
> > on 4.18-rc1.
> >
> > This patch series has been verified on Hikey620 platform with below two
> > commands:
> > perf script --itrace=i10000il128 -F cpu,event,ip,addr,sym -k ./vmlinux
> > perf script -F cpu,event,ip,addr,sym -k ./vmlinux
> >
> > [1] https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git
> >
> >
> > Leo Yan (6):
> >   perf cs-etm: Introduce invalid address macro
> >   perf cs-etm: Bail out immediately for instruction sample failure
> >   perf cs-etm: Fix start tracing packet handling
> >   perf cs-etm: Support dummy address value for CS_ETM_TRACE_ON packet
> >   perf cs-etm: Generate branch sample when receiving a CS_ETM_TRACE_ON
> >     packet
> >   perf cs-etm: Generate branch sample for CS_ETM_TRACE_ON packet
> >
> >  tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 10 ++--
> >  tools/perf/util/cs-etm-decoder/cs-etm-decoder.h |  1 +
> >  tools/perf/util/cs-etm.c                        | 71 +++++++++++++++++++++----
> >  3 files changed, 68 insertions(+), 14 deletions(-)
> 
> Good day Arnaldo,
> 
> I am good with this set:
> 
> Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>
> 
> Please consider for inclusion in your tree if you are satisfied with the work.

I'll take a look and get it into perf/core, now I'm concentrating on
perf/urgent work.

Thanks,

- Arnaldo