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authorArnaldo Carvalho de Melo <acme@redhat.com>2011-03-28 09:50:11 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-03-29 13:40:27 -0300
commitc286c419c784c238cd699be37fec7a9acc30d89f (patch)
tree3c99ba8a937f97dc02df0962a8a72cb26f9d27b5 /tools/perf/util/debug.h
parent1dfd7b494b3d8fb1e8a7383a8095f77eb058cd83 (diff)
perf tools: Fixup exit path when not able to open events
We have to deal with the TUI mode in perf top, so that we don't end up with a garbled screen when, say, a non root user on a machine with a paranoid setting (the default) tries to use 'perf top'. Introduce a ui__warning_paranoid() routine shared by top and record that tells the user the valid values for /proc/sys/kernel/perf_event_paranoid. Cc: David Ahern <daahern@cisco.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/debug.h')
-rw-r--r--tools/perf/util/debug.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h
index 93516cf4682..fd53db47e3d 100644
--- a/tools/perf/util/debug.h
+++ b/tools/perf/util/debug.h
@@ -36,5 +36,6 @@ int ui_helpline__show_help(const char *format, va_list ap);
#endif
void ui__warning(const char *format, ...) __attribute__((format(printf, 1, 2)));
+void ui__warning_paranoid(void);
#endif /* __PERF_DEBUG_H */