diff options
Diffstat (limited to 'tools/perf/util/debug.c')
-rw-r--r-- | tools/perf/util/debug.c | 10 |
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 | ||
60 | void 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 | |||
60 | void trace_event(union perf_event *event) | 70 | void trace_event(union perf_event *event) |
61 | { | 71 | { |
62 | unsigned char *raw_event = (void *)event; | 72 | unsigned char *raw_event = (void *)event; |