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Date: Wed, 22 Sep 2021 17:10:24 -0700 From: Ian Rogers <irogers@...gle.com> To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Mark Rutland <mark.rutland@....com>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>, linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org, linux-trace-devel@...r.kernel.org, Tzvetomir Stoyanov <tz.stoyanov@...il.com>, Steven Rostedt <rostedt@...dmis.org> Cc: eranian@...gle.com, Ian Rogers <irogers@...gle.com> Subject: [PATCH v3 4/4] libtraceevent: Increase libtraceevent logging when verbose 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@...gle.com> --- tools/perf/util/debug.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c index 2c06abf6dcd2..c7a9fa0ffae9 100644 --- a/tools/perf/util/debug.c +++ b/tools/perf/util/debug.c @@ -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; } -- 2.33.0.464.g1972c5931b-goog
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