linux-kernel - Re: [PATCH v2 0/3] perf arm64: Support SDT

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Date:   Mon, 28 Dec 2020 09:54:43 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Leo Yan <leo.yan@...aro.org>
Cc:     John Garry <john.garry@...wei.com>, Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexandre Truong <alexandre.truong@....com>,
        Ian Rogers <irogers@...gle.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        He Zhe <zhe.he@...driver.com>,
        Sumanth Korikkar <sumanthk@...ux.ibm.com>,
        Alexis Berlemont <alexis.berlemont@...il.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/3] perf arm64: Support SDT

Em Fri, Dec 25, 2020 at 01:27:48PM +0800, Leo Yan escreveu:
> This patch is to enable SDT on Arm64.
> 
> Since Arm64 SDT marker in ELF file is different from other archs,
> especially for using stack pointer (sp) to retrieve data for local
> variables, patch 01 is used to fixup the arguments for this special
> case.  Patch 02 is to add argument support for Arm64 SDT.
> 
> This patch set has been verified on Arm64/x86_64 platforms with a
> testing program usdt_test.  The testing approach is described in the
> patch set v1 [1].
> 
> Changes from v1:
> * Added Arnaldo's patch for fixing memory leak (Arnaldo);
> * Refined patch "perf probe: Fixup Arm64 SDT arguments" to use
>   asprintf() and check pointer is valid or not (Arnaldo);
> * Minor changes in patch "perf arm64: Add argument support for SDT"
>   for the regular expression;
> * Added Masami's Ack tag for patch 03.
> 
> [1] https://lore.kernel.org/patchwork/cover/1356212/
> 

This one made it into 5.11
 
> Arnaldo Carvalho de Melo (1):
>   perf probe: Fix memory leak in synthesize_sdt_probe_command()
 
These were now merged in perf/core.

> Leo Yan (2):
>   perf probe: Fixup Arm64 SDT arguments
>   perf arm64: Add argument support for SDT

Thanks,

- Arnaldo