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authorJin Yao <yao.jin@linux.intel.com>2018-06-01 17:01:03 +0800
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-06-06 15:40:10 -0300
commitac56aa4549cdfd9c56387b35e99e3c868cfc7bd0 (patch)
tree30213aabe32613fbae423bfe759e05d9474c023f /tools
parent48a1f565261d2ab1e17f9a3ad532cf6d9e07748d (diff)
downloadop-kernel-dev-ac56aa4549cdfd9c56387b35e99e3c868cfc7bd0.zip
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perf script python: Add dict fields introduction to Documentation
Add a brief introduction about fields to perf-script-python.txt. It should help python script developers in easily finding what fields are supported. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1527843663-32288-4-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/Documentation/perf-script-python.txt26
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-script-python.txt b/tools/perf/Documentation/perf-script-python.txt
index 51ec2d2..0fb9eda 100644
--- a/tools/perf/Documentation/perf-script-python.txt
+++ b/tools/perf/Documentation/perf-script-python.txt
@@ -610,6 +610,32 @@ Various utility functions for use with perf script:
nsecs_str(nsecs) - returns printable string in the form secs.nsecs
avg(total, n) - returns average given a sum and a total number of values
+SUPPORTED FIELDS
+----------------
+
+Currently supported fields:
+
+ev_name, comm, pid, tid, cpu, ip, time, period, phys_addr, addr,
+symbol, dso, time_enabled, time_running, values, callchain,
+brstack, brstacksym, datasrc, datasrc_decode, iregs, uregs,
+weight, transaction, raw_buf, attr.
+
+Some fields have sub items:
+
+brstack:
+ from, to, from_dsoname, to_dsoname, mispred,
+ predicted, in_tx, abort, cycles.
+
+brstacksym:
+ items: from, to, pred, in_tx, abort (converted string)
+
+For example,
+We can use this code to print brstack "from", "to", "cycles".
+
+if 'brstack' in dict:
+ for entry in dict['brstack']:
+ print "from %s, to %s, cycles %s" % (entry["from"], entry["to"], entry["cycles"])
+
SEE ALSO
--------
linkperf:perf-script[1]
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