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Date:	Fri,  1 Apr 2016 17:54:14 -0700
From:	Kamal Mostafa <>
Cc:	Borislav Petkov <>,
	Arnaldo Carvalho de Melo <>,
	Alexander Shishkin <>,
	David Ahern <>,
	Davidlohr Bueso <>,
	Jiri Olsa <>, Mel Gorman <>,
	Namhyung Kim <>,
	Peter Zijlstra <>,
	Peter Zijlstra <>,
	Steven Rostedt <>,
	Thomas Gleixner <>,
	Ingo Molnar <>,
	Kamal Mostafa <>
Subject: [PATCH 3.19.y-ckt 168/170] perf stat: Document --detailed option

3.19.8-ckt18 -stable review patch.  If anyone has any objections, please let me know.


From: Borislav Petkov <>

commit f594bae08183fb6b57db55387794ece3e1edf6f6 upstream.

I'm surprised this remained undocumented since at least 2011. And it is
actually a very useful switch, as Steve and I came to realize recently.

Add the text from

  2cba3ffb9a9d ("perf stat: Add -d -d and -d -d -d options to show more CPU events")

which added the incrementing aspect to -d.

Tested-by: Arnaldo Carvalho de Melo <>
Signed-off-by: Borislav Petkov <>
Signed-off-by: Arnaldo Carvalho de Melo <>
Cc: Alexander Shishkin <>
Cc: David Ahern <>
Cc: Davidlohr Bueso <>
Cc: Jiri Olsa <>
Cc: Mel Gorman <>
Cc: Namhyung Kim <>
Cc: Peter Zijlstra <>
Cc: Peter Zijlstra <>
Cc: Steven Rostedt <>
Cc: Thomas Gleixner <>
Fixes: 2cba3ffb9a9d ("perf stat: Add -d -d and -d -d -d options to show more CPU events")
Signed-off-by: Ingo Molnar <>
Signed-off-by: Kamal Mostafa <>
 tools/perf/Documentation/perf-stat.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 29ee857..6f9fbb4 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -50,6 +50,14 @@ OPTIONS
 	scale/normalize counter values
+	print more detailed statistics, can be specified up to 3 times
+	   -d:          detailed events, L1 and LLC data cache
+        -d -d:     more detailed events, dTLB and iTLB events
+     -d -d -d:     very detailed events, adding prefetch events
 	repeat command and print average + stddev (max: 100). 0 means forever.

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