[PATCH 35/49] perf tools: Add threads debug variable

Jiri Olsa
2018-01-09T15:37:26Z

To separate thread debug messages from global verbose,
to enable type:

$ perf --debug threads=X record ...

where X is the debug level.

Link: http://lkml.kernel.org/n/tip-tgpv7s1pjnxgfw7c90mg5tpl@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/Documentation/perf.txt | 1 +
tools/perf/util/debug.c | 2 ++
tools/perf/util/debug.h | 1 +
3 files changed, 4 insertions(+)

diff --git a/tools/perf/Documentation/perf.txt b/tools/perf/Documentation/perf.txt
index 864e37597252..5ae38692af64 100644
--- a/tools/perf/Documentation/perf.txt
+++ b/tools/perf/Documentation/perf.txt
@@ -22,6 +22,7 @@ OPTIONS
verbose - general debug messages
ordered-events - ordered events object debug messages
data-convert - data convert command debug messages
+ threads - threads debug/stats messages

--buildid-dir::
Setup buildid cache directory. It has higher priority than
diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
index f3a71db83947..74cc701b9615 100644
--- a/tools/perf/util/debug.c
+++ b/tools/perf/util/debug.c
@@ -28,6 +28,7 @@ bool dump_trace = false, quiet = false;
int debug_ordered_events;
static int redirect_to_stderr;
int debug_data_convert;
+int debug_threads;

int veprintf(int level, int var, const char *fmt, va_list args)
{
@@ -180,6 +181,7 @@ static struct debug_variable {
{ .name = "ordered-events", .ptr = &debug_ordered_events},
{ .name = "stderr", .ptr = &redirect_to_stderr},
{ .name = "data-convert", .ptr = &debug_data_convert },
+ { .name = "threads", .ptr = &debug_threads },
{ .name = NULL, }
};

diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h
index 77445dfc5c7d..96665c66057b 100644
--- a/tools/perf/util/debug.h
+++ b/tools/perf/util/debug.h
@@ -15,6 +15,7 @@ extern int verbose;
extern bool quiet, dump_trace;
extern int debug_ordered_events;
extern int debug_data_convert;
+extern int debug_threads;

#ifndef pr_fmt
#define pr_fmt(fmt) fmt
--
2.13.6