From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752639AbcEVUaJ (ORCPT ); Sun, 22 May 2016 16:30:09 -0400 Received: from mail.kernel.org ([198.145.29.136]:56549 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752535AbcEVUaH (ORCPT ); Sun, 22 May 2016 16:30:07 -0400 Message-Id: <20160522203000.993605985@goodmis.org> User-Agent: quilt/0.61-1 Date: Sun, 22 May 2016 16:28:47 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Linus Torvalds , Ingo Molnar , Andrew Morton Subject: [PATCH 1/3] ftracetest: Add instance created, delete, read and enable event test References: <20160522202846.576089843@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Disposition: inline; filename=0001-ftracetest-Add-instance-created-delete-read-and-enab.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Steven Rostedt (Red Hat)" Add a new ftrace test that creates three threads. One that creates and removes an ftrace instance, one that reads the instance, and one that enables and disables events in the instance. This is a stress test for accessing and removing instances at the same time. Signed-off-by: Steven Rostedt --- .../ftrace/test.d/instances/instance-event.tc | 143 +++++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/instances/instance-event.tc diff --git a/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc b/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc new file mode 100644 index 000000000000..5f2abd03f16b --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/instances/instance-event.tc @@ -0,0 +1,143 @@ +#!/bin/sh +# description: Test creation and deletion of trace instances while setting an event + +if [ ! -d instances ] ; then + echo "no instance directory with this kernel" + exit_unsupported; +fi + +fail() { # mesg + rmdir foo 2>/dev/null + echo $1 + set -e + exit $FAIL +} + +cd instances + +# we don't want to fail on error +set +e + +mkdir x +rmdir x +result=$? + +if [ $result -ne 0 ]; then + echo "instance rmdir not supported" + exit_unsupported +fi + +instance_slam() { + while :; do + mkdir foo 2> /dev/null + rmdir foo 2> /dev/null + done +} + +instance_read() { + while :; do + cat foo/trace 1> /dev/null 2>&1 + done +} + +instance_set() { + while :; do + echo 1 > foo/events/sched/sched_switch + done 2> /dev/null +} + +instance_slam & +p1=$! +echo $p1 + +instance_set & +p2=$! +echo $p2 + +instance_read & +p3=$! +echo $p3 + +sleep 1 + +kill -1 $p3 +kill -1 $p2 +kill -1 $p1 + +echo "Wait for processes to finish" +wait $p1 $p2 $p3 +echo "all processes finished, wait for cleanup" +sleep 1 + +mkdir foo +ls foo > /dev/null +rmdir foo +if [ -d foo ]; then + fail "foo still exists" +fi +exit 0 + + + + +instance_slam() { + while :; do + mkdir x + mkdir y + mkdir z + rmdir x + rmdir y + rmdir z + done 2>/dev/null +} + +instance_slam & +x=`jobs -l` +p1=`echo $x | cut -d' ' -f2` +echo $p1 + +instance_slam & +x=`jobs -l | tail -1` +p2=`echo $x | cut -d' ' -f2` +echo $p2 + +instance_slam & +x=`jobs -l | tail -1` +p3=`echo $x | cut -d' ' -f2` +echo $p3 + +instance_slam & +x=`jobs -l | tail -1` +p4=`echo $x | cut -d' ' -f2` +echo $p4 + +instance_slam & +x=`jobs -l | tail -1` +p5=`echo $x | cut -d' ' -f2` +echo $p5 + +ls -lR >/dev/null +sleep 1 + +kill -1 $p1 +kill -1 $p2 +kill -1 $p3 +kill -1 $p4 +kill -1 $p5 + +echo "Wait for processes to finish" +wait $p1 $p2 $p3 $p4 $p5 +echo "all processes finished, wait for cleanup" + +mkdir x y z +ls x y z +rmdir x y z +for d in x y z; do + if [ -d $d ]; then + fail "instance $d still exists" + fi +done + +set -e + +exit 0 -- 2.8.0.rc3