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libtraceevent: Increase libtraceevent logging when verbose

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libtraceevent has added more levels of debug printout and with changes
like:

  https://lore.kernel.org/linux-trace-devel/20210507095022.1079364-3-tz.stoyanov@gmail.com

previously generated output like "registering plugin" is no longer
displayed.

This change makes it so that if perf's verbose debug output is enabled
then the debug and info libtraceevent messages can be displayed.

The code is conditionally enabled based on the libtraceevent version as
discussed in the RFC:

  https://lore.kernel.org/lkml/20210610060643.595673-1-irogers@google.com/

v2. Is a rebase and handles the case of building without
    LIBTRACEEVENT_DYNAMIC.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Cc: linux-trace-devel@vger.kernel.org
Link: http://lore.kernel.org/lkml/20210923001024.550263-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2021-09-22 17:10:24 -07:00 committed by Arnaldo Carvalho de Melo
parent 359cad09e4
commit 08efcb4a63
1 changed files with 19 additions and 0 deletions
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19
tools/perf/util/debug.c
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@ -24,6 +24,16 @@
#include "util/parse-sublevel-options.h"
#include <linux/ctype.h>
#include <traceevent/event-parse.h>
#define MAKE_LIBTRACEEVENT_VERSION(a, b, c) ((a)*255*255+(b)*255+(c))
#ifndef LIBTRACEEVENT_VERSION
/*
* If LIBTRACEEVENT_VERSION wasn't computed then set to version 1.1.0 that ships
* with the Linux kernel tools.
*/
#define LIBTRACEEVENT_VERSION MAKE_LIBTRACEEVENT_VERSION(1, 1, 0)
#endif
int verbose;
int debug_peo_args;
@ -228,6 +238,15 @@ int perf_debug_option(const char *str)
/* Allow only verbose value in range (0, 10), otherwise set 0. */
verbose = (verbose < 0) || (verbose > 10) ? 0 : verbose;
#if MAKE_LIBTRACEEVENT_VERSION(1, 3, 0) <= LIBTRACEEVENT_VERSION
if (verbose == 1)
tep_set_loglevel(TEP_LOG_INFO);
else if (verbose == 2)
tep_set_loglevel(TEP_LOG_DEBUG);
else if (verbose >= 3)
tep_set_loglevel(TEP_LOG_ALL);
#endif
return 0;
}