linux-kernel - Re: [PATCH 1/2] perf/trace: call machine_

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Date:   Wed, 8 Nov 2017 11:39:27 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Andrei Vagin <avagin@...nvz.org>
Cc:     linux-kernel@...r.kernel.org, Vasily Averin <vvs@...tuozzo.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH 1/2] perf/trace: call machine__exit() at exiting

On Tue, Nov 07, 2017 at 04:22:45PM -0800, Andrei Vagin wrote:
> Otherwise perf trace leaves a temprary file /tmp/perf-vdso.so-XXXXXX.
> 
> $ perf trace -o log true
> $ ls -l /tmp/perf-vdso.*
> -rw------- 1 root root 8192 Nov  8 03:08 /tmp/perf-vdso.so-5bCpD0
> 
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
> Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> Cc: Jiri Olsa <jolsa@...hat.com>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Signed-off-by: Andrei Vagin <avagin@...nvz.org>

for patchset:

Reviewed-by: Jiri Olsa <jolsa@...nel.org>

thanks,
jirka

> ---
>  tools/perf/builtin-trace.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
> index 505b871fdc82..f2757d38c7d7 100644
> --- a/tools/perf/builtin-trace.c
> +++ b/tools/perf/builtin-trace.c
> @@ -1164,6 +1164,14 @@ static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
>  	return err;
>  }
>  
> +static void trace__symbols__exit(struct trace *trace)
> +{
> +	machine__exit(trace->host);
> +	trace->host = NULL;
> +
> +	symbol__exit();
> +}
> +
>  static int syscall__alloc_arg_fmts(struct syscall *sc, int nr_args)
>  {
>  	int idx;
> @@ -2508,6 +2516,8 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
>  	}
>  
>  out_delete_evlist:
> +	trace__symbols__exit(trace);
> +
>  	perf_evlist__delete(evlist);
>  	trace->evlist = NULL;
>  	trace->live = false;
> -- 
> 2.13.6
>