lkml.org 
[lkml]   [2016]   [Oct]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/2] perf, tools: Add documentation for perf user event parameters
Date
From: Andi Kleen <ak@linux.intel.com>

There was no proper documention for the user parameters for
events that the perf parser implements. Document them all
in the perf list manpage.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
tools/perf/Documentation/perf-list.txt | 42 ++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)

diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
index 41857cce5e86..511adc684148 100644
--- a/tools/perf/Documentation/perf-list.txt
+++ b/tools/perf/Documentation/perf-list.txt
@@ -119,6 +119,48 @@ be specified as

perf stat -e cpu/event=0xa8,umask=0x1,name=LSD.UOPS_CYCLES,cmask=1/ ...

+EVENT PARAMETERS
+----------------
+
+The pmu// syntax in perf uses parameters to configure the event for the
+PMU.
+
+For a list of available parameters for each PMU please use
+
+ ls /sys/devices/*/format
+
+Common parameters are
+
+. event=NUM: Event code
+. umask=NUM: Event umask
+
+In addition perf supports some extra parameters to further configure then
+event
+
+. name=name: Use name to display the event in perf
+. period=NUM: Use sampling period NUM for the event. Similar to the -c parameter,
+but only applies to this event. Only valid for perf record and top.
+. freq=NUM: Use sampling frequency NUM for the event. Similar to the -c parameter,
+but only applies to this event. Only valid for perf record and top.
+. branch_type=TYPE: Enable last branch sampling for event. TYPE is the same
+as the argument to perf record's -j option. Use any to be equivalent to -b.
+when no is specified branch sampling is disabled for this event. Only valid
+for perf record and top.
+. time=NUM: When NUM is non zero collect a time stamp for the event.
+. call-graph=type: Enable call graph mode for the event. When no is specified call
+graph is disabled. The parameters are the as to the --call-graph option of
+perf record. Only valid for perf record and top.
+. stack-size=BYTES: For dwarf unwinding call graph mode limit the number of stack
+bytes collected to BYTES.
+. max-stack=NUM: For call graph mode limit the number of entries to NUM.
+. inherit: Inherit the event to child processes.
+. no-inherit: Do not inherit the event to child processes.
+. overwrite: Enable overwrite mode in the perf buffer.
+. no-overwrite: Do not enable overwrite mode in the perf buffer.
+. config=NUM: Configure config parameter in perf event attribute.
+. config1=NUM: Configure config1 parameter in perf event attribute.
+. config2=NUM: Configure config2 parameter in perf event attribute.
+
PER SOCKET PMUS
---------------

--
2.5.5
\
 
 \ /
  Last update: 2016-10-12 23:45    [W:3.412 / U:0.196 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site