linux-kernel - Re: [PATCH 1/8] perf tools: Add debug_set

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Message-ID: <20201215153709.GB258566@kernel.org>
Date:   Tue, 15 Dec 2020 12:37:09 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Ian Rogers <irogers@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        Alexei Budankov <abudankov@...wei.com>
Subject: Re: [PATCH 1/8] perf tools: Add debug_set_file function

Em Sat, Dec 12, 2020 at 11:43:51AM +0100, Jiri Olsa escreveu:
> Allow to set debug output file via new debug_set_file function.
> 
> It's called during perf startup in perf_debug_setup to set stderr
> file as default and any perf command can set it later to different
> file.
> 
> It will be used in perf daemon command to get verbose output into
> log file.

Thanks, applied.

- Arnaldo

 
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/perf/util/debug.c | 9 ++++++++-
>  tools/perf/util/debug.h | 2 ++
>  2 files changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
> index 5cda5565777a..50fd6a4be4e0 100644
> --- a/tools/perf/util/debug.c
> +++ b/tools/perf/util/debug.c
> @@ -30,6 +30,12 @@ bool dump_trace = false, quiet = false;
>  int debug_ordered_events;
>  static int redirect_to_stderr;
>  int debug_data_convert;
> +static FILE *debug_file;
> +
> +void debug_set_file(FILE *file)
> +{
> +	debug_file = file;
> +}
>  
>  int veprintf(int level, int var, const char *fmt, va_list args)
>  {
> @@ -39,7 +45,7 @@ int veprintf(int level, int var, const char *fmt, va_list args)
>  		if (use_browser >= 1 && !redirect_to_stderr)
>  			ui_helpline__vshow(fmt, args);
>  		else
> -			ret = vfprintf(stderr, fmt, args);
> +			ret = vfprintf(debug_file, fmt, args);
>  	}
>  
>  	return ret;
> @@ -227,6 +233,7 @@ DEBUG_WRAPPER(debug, 1);
>  
>  void perf_debug_setup(void)
>  {
> +	debug_set_file(stderr);
>  	libapi_set_print(pr_warning_wrapper, pr_warning_wrapper, pr_debug_wrapper);
>  }
>  
> diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h
> index f1734abd98dd..43f712295645 100644
> --- a/tools/perf/util/debug.h
> +++ b/tools/perf/util/debug.h
> @@ -5,6 +5,7 @@
>  
>  #include <stdarg.h>
>  #include <stdbool.h>
> +#include <stdio.h>
>  #include <linux/compiler.h>
>  
>  extern int verbose;
> @@ -62,6 +63,7 @@ int eprintf_time(int level, int var, u64 t, const char *fmt, ...) __printf(4, 5)
>  int veprintf(int level, int var, const char *fmt, va_list args);
>  
>  int perf_debug_option(const char *str);
> +void debug_set_file(FILE *file);
>  void perf_debug_setup(void);
>  int perf_quiet_option(void);
>  
> -- 
> 2.26.2
> 

-- 

- Arnaldo