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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/[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.

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

  https://lore.kernel.org/lkml/[email protected]/

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

Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Steven Rostedt (VMware) <[email protected]>
Cc: Tzvetomir Stoyanov (VMware) <[email protected]>
Cc: [email protected]
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Ian Rogers authored and Arnaldo Carvalho de Melo committed 2021-09-28 16:09:16 -03:00
1 parent 359cad09e4
commit 08efcb4a63
1 file changed
+19
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tools/perf/util/debug.c
+19
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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;
}