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

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Message-ID: <CANLsYkyxuz+tPrC7wb1omsw+qj=7ZB5t6FRbqZz54994g62q6g@mail.gmail.com>
Date:   Tue, 19 Jun 2018 11:46:02 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Leo Yan <leo.yan@...aro.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.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

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.

Regards,
Mathieu

>
> --
> 2.7.4
>