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-rw-r--r--tools/perf/util/debug.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
index d4536a9e0d8c..155749d74350 100644
--- a/tools/perf/util/debug.c
+++ b/tools/perf/util/debug.c
@@ -57,6 +57,16 @@ void ui__warning(const char *format, ...)
57} 57}
58#endif 58#endif
59 59
60void ui__warning_paranoid(void)
61{
62 ui__warning("Permission error - are you root?\n"
63 "Consider tweaking /proc/sys/kernel/perf_event_paranoid:\n"
64 " -1 - Not paranoid at all\n"
65 " 0 - Disallow raw tracepoint access for unpriv\n"
66 " 1 - Disallow cpu events for unpriv\n"
67 " 2 - Disallow kernel profiling for unpriv\n");
68}
69
60void trace_event(union perf_event *event) 70void trace_event(union perf_event *event)
61{ 71{
62 unsigned char *raw_event = (void *)event; 72 unsigned char *raw_event = (void *)event;