Author: gnn
Date: Tue Feb 14 04:18:59 2012
New Revision: 231634
URL: http://svn.freebsd.org/changeset/base/231634
Log:
Add a rudimentary test to run through all the available counters on a
system and then execute a program with pmcstat in counting mode.
The program will verify that all counters fire and that the code neither
panics the system nor locks it up. This should be considered a first pass
conformance test for new sets of counters being added to hwpmc(4).
Added:
head/tools/test/hwpmc/
head/tools/test/hwpmc/pmctest.py (contents, props changed)
Added: head/tools/test/hwpmc/pmctest.py
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/tools/test/hwpmc/pmctest.py Tue Feb 14 04:18:59 2012
(r231634)
@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+# Copyright (c) 2012, Neville-Neil Consulting
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+#
+# Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# Neither the name of Neville-Neil Consulting nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Author: George V. Neville-Neil
+#
+# $FreeBSD$
+
+# Description: A program to run a simple program against every available
+# pmc counter present in a system.
+#
+# To use:
+#
+# pmctest.py ls > /dev/null
+#
+# This should result in ls being run with every available counter
+# and the system should neither lock up nor panic.
+
+import sys
+import subprocess
+from subprocess import PIPE
+
+# A list of strings that are not really counters, just
+# name tags that are output by pmccontrol -L
+notcounter = ["IAF", "IAP", "TSC", "UNC", "UCF"]
+
+def main():
+
+ if (len(sys.argv) != 2):
+ print ("usage: pmctest.py program")
+
+ program = sys.argv[1]
+
+ p = subprocess.Popen(["pmccontrol", "-L"], stdout=PIPE)
+ counters = p.communicate()[0]
+
+ if len(counters) <= 0:
+ print "no counters found"
+ sys.exit()
+
+ for counter in counters.split():
+ if counter in notcounter:
+ continue
+ p = subprocess.Popen(["pmcstat", "-p", counter, program], stdout=PIPE)
+ result = p.communicate()[0]
+ print result
+
+# The canonical way to make a python module into a script.
+# Remove if unnecessary.
+
+if __name__ == "__main__":
+ main()
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