[RFC PATCH] libtraceevent: Increase libtraceevent logging when verbose

Ian Rogers <[email protected]> Wed, 9 Jun 2021 23:06:43 -0700
Newsgroups org.kernel.vger.linux-trace-users,org.kernel.vger.linux-kernel,org.kernel.vger.linux-perf-users
Message-ID <[email protected]>
libtraceevent has added more levels of debug printout and with changes
like:
https://lore.kernel.org/linux-trace-devel/[email protected]
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.
As this API isn't present in the deprecated tools version of
libtracevent I'm uploading this as an RFC.

Signed-off-by: Ian Rogers <[email protected]>
---
 tools/perf/util/debug.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
index 2c06abf6dcd2..700828e92fe1 100644
--- a/tools/perf/util/debug.c
+++ b/tools/perf/util/debug.c
@@ -24,6 +24,7 @@
 #include "util/parse-sublevel-options.h"
 
 #include <linux/ctype.h>
+#include <traceevent/event-parse.h>
 
 int verbose;
 int debug_peo_args;
@@ -228,6 +229,13 @@ 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 (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);
+
 	return 0;
 }
 
-- 
2.32.0.272.g935e593368-goog