perf timechart: Add more options to IO mode

--io-skip-eagain - don't show EAGAIN errors
--io-min-time    - make small io bursts visible
--io-merge-dist  - merge adjacent events

Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/n/1404835423-23098-5-git-send-email-stfomichev@yandex-team.ru
Signed-off-by: Jiri Olsa <jolsa@kernel.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/tools/perf/Documentation/perf-timechart.txt b/tools/perf/Documentation/perf-timechart.txt
index ec6b46c7bca0..df98d1c82688 100644
--- a/tools/perf/Documentation/perf-timechart.txt
+++ b/tools/perf/Documentation/perf-timechart.txt
@@ -64,6 +64,19 @@ TIMECHART OPTIONS
         duration or tasks with given name. If number is given it's interpreted
         as number of nanoseconds. If non-numeric string is given it's
         interpreted as task name.
+--io-skip-eagain::
+        Don't draw EAGAIN IO events.
+--io-min-time=<nsecs>::
+        Draw small events as if they lasted min-time. Useful when you need
+        to see very small and fast IO. It's possible to specify ms or us
+        suffix to specify time in milliseconds or microseconds.
+        Default value is 1ms.
+--io-merge-dist=<nsecs>::
+        Merge events that are merge-dist nanoseconds apart.
+        Reduces number of figures on the SVG and makes it more render-friendly.
+        It's possible to specify ms or us suffix to specify time in
+        milliseconds or microseconds.
+        Default value is 1us.
 
 RECORD OPTIONS
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