linux-kernel - Re: [PATCH v5 09/10] perf inject: enable COMPRESSED records decompression

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Message-ID: <20190305122655.GM16615@krava>
Date:   Tue, 5 Mar 2019 13:26:55 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Alexey Budankov <alexey.budankov@...ux.intel.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Andi Kleen <ak@...ux.intel.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 09/10] perf inject: enable COMPRESSED records
 decompression

On Fri, Mar 01, 2019 at 07:07:49PM +0300, Alexey Budankov wrote:
> 
> Initialized decompression API so COMPRESSED record would be
> decompressed into the resulting output data file.
> 
> Signed-off-by: Alexey Budankov <alexey.budankov@...ux.intel.com>
> ---
>  tools/perf/builtin-inject.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
> index 24086b7f1b14..8e0e06d3edfc 100644
> --- a/tools/perf/builtin-inject.c
> +++ b/tools/perf/builtin-inject.c
> @@ -837,6 +837,9 @@ int cmd_inject(int argc, const char **argv)
>  	if (inject.session == NULL)
>  		return -1;
>  
> +	if (zstd_init(&(inject.session->zstd_data), 0) < 0)
> +		pr_warning("Decompression initialization failed.\n");

hum, I wonder we should put this inside perf_session__new/perf_session__delete

jirka

> +
>  	if (inject.build_ids) {
>  		/*
>  		 * to make sure the mmap records are ordered correctly
> @@ -867,6 +870,7 @@ int cmd_inject(int argc, const char **argv)
>  	ret = __cmd_inject(&inject);
>  
>  out_delete:
> +	zstd_fini(&(inject.session->zstd_data));
>  	perf_session__delete(inject.session);
>  	return ret;
>  }
> -- 
> 2.20.1
>