Merge tag 'ftracetest-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull ftrace test code from Steven Rostedt:
 "This patch series starts a new selftests section in the
  tools/testing/selftest directory called "ftrace" that holds tests
  aimed at testing ftrace and subsystems that use ftrace (like kprobes).

  So far only a few tests were written (by Masami Hiramatsu), but more
  will be added in the near future (3.19)"

* tag 'ftracetest-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/kprobes: Add selftest scripts testing kprobe-tracer as startup test
  ftracetest: Add POSIX.3 standard and XFAIL result codes
  ftracetest: Add kprobe basic testcases
  ftracetest: Add ftrace basic testcases
  ftracetest: Initial commit for ftracetest

18 files changed, 445 insertions, 0 deletions

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 36ff2e4c7b6f..45f145c6f843 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -14,6 +14,7 @@ TARGETS += powerpc
 TARGETS += user
 TARGETS += sysctl
 TARGETS += firmware
+TARGETS += ftrace
 
 TARGETS_HOTPLUG = cpu-hotplug
 TARGETS_HOTPLUG += memory-hotplug
diff --git a/tools/testing/selftests/ftrace/Makefile b/tools/testing/selftests/ftrace/Makefile
new file mode 100644
index 000000000000..76cc9f156267
--- /dev/null
+++ b/tools/testing/selftests/ftrace/Makefile
@@ -0,0 +1,7 @@
+all:
+
+run_tests:
+        @/bin/sh ./ftracetest || echo "ftrace selftests: [FAIL]"
+
+clean:
+        rm -rf logs/*
diff --git a/tools/testing/selftests/ftrace/README b/tools/testing/selftests/ftrace/README
new file mode 100644
index 000000000000..182e76fa4b82
--- /dev/null
+++ b/tools/testing/selftests/ftrace/README
@@ -0,0 +1,82 @@
+Linux Ftrace Testcases
+
+This is a collection of testcases for ftrace tracing feature in the Linux
+kernel. Since ftrace exports interfaces via the debugfs, we just need
+shell scripts for testing. Feel free to add new test cases.
+
+Running the ftrace testcases
+============================
+
+At first, you need to be the root user to run this script.
+To run all testcases:
+
+  $ sudo ./ftracetest
+
+To run specific testcases:
+
+  # ./ftracetest test.d/basic3.tc
+
+Or you can also run testcases under given directory:
+
+  # ./ftracetest test.d/kprobe/
+
+Contributing new testcases
+==========================
+
+Copy test.d/template to your testcase (whose filename must have *.tc
+extension) and rewrite the test description line.
+
+ * The working directory of the script is <debugfs>/tracing/.
+
+ * Take care with side effects as the tests are run with root privilege.
+
+ * The tests should not run for a long period of time (more than 1 min.)
+   These are to be unit tests.
+
+ * You can add a directory for your testcases under test.d/ if needed.
+
+ * The test cases should run on dash (busybox shell) for testing on
+   minimal cross-build environments.
+
+ * Note that the tests are run with "set -e" (errexit) option. If any
+   command fails, the test will be terminated immediately.
+
+ * The tests can return some result codes instead of pass or fail by
+   using exit_unresolved, exit_untested, exit_unsupported and exit_xfail.
+
+Result code
+===========
+
+Ftracetest supports following result codes.
+
+ * PASS: The test succeeded as expected. The test which exits with 0 is
+         counted as passed test.
+
+ * FAIL: The test failed, but was expected to succeed. The test which exits
+         with !0 is counted as failed test.
+
+ * UNRESOLVED: The test produced unclear or intermidiate results.
+             for example, the test was interrupted
+                       or the test depends on a previous test, which failed.
+                       or the test was set up incorrectly
+             The test which is in above situation, must call exit_unresolved.
+
+ * UNTESTED: The test was not run, currently just a placeholder.
+             In this case, the test must call exit_untested.
+
+ * UNSUPPORTED: The test failed because of lack of feature.
+               In this case, the test must call exit_unsupported.
+
+ * XFAIL: The test failed, and was expected to fail.
+          To return XFAIL, call exit_xfail from the test.
+
+There are some sample test scripts for result code under samples/.
+You can also run samples as below:
+
+  # ./ftracetest samples/
+
+TODO
+====
+
+ * Fancy colored output :)
+
diff --git a/tools/testing/selftests/ftrace/ftracetest b/tools/testing/selftests/ftrace/ftracetest
new file mode 100755
index 000000000000..a8f81c782856
--- /dev/null
+++ b/tools/testing/selftests/ftrace/ftracetest
@@ -0,0 +1,253 @@
+#!/bin/sh
+
+# ftracetest - Ftrace test shell scripts
+#
+# Copyright (C) Hitachi Ltd., 2014
+#  Written by Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
+#
+# Released under the terms of the GPL v2.
+
+usage() { # errno [message]
+[ "$2" ] && echo $2
+echo "Usage: ftracetest [options] [testcase(s)] [testcase-directory(s)]"
+echo " Options:"
+echo "          -h|--help  Show help message"
+echo "          -k|--keep  Keep passed test logs"
+echo "          -d|--debug Debug mode (trace all shell commands)"
+exit $1
+}
+
+errexit() { # message
+  echo "Error: $1" 1>&2
+  exit 1
+}
+
+# Ensuring user privilege
+if [ `id -u` -ne 0 ]; then
+  errexit "this must be run by root user"
+fi
+
+# Utilities
+absdir() { # file_path
+  (cd `dirname $1`; pwd)
+}
+
+abspath() {
+  echo `absdir $1`/`basename $1`
+}
+
+find_testcases() { #directory
+  echo `find $1 -name \*.tc`
+}
+
+parse_opts() { # opts
+  local OPT_TEST_CASES=
+  local OPT_TEST_DIR=
+
+  while [ "$1" ]; do
+    case "$1" in
+    --help|-h)
+      usage 0
+    ;;
+    --keep|-k)
+      KEEP_LOG=1