[for-next][PATCH 17/19] tracing/selftest: Add test to test simple snapshot trigger for trace_marker

From: Steven Rostedt
Date: Tue May 29 2018 - 11:25:48 EST


From: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx>

Several complex trigger tests were added for trace_marker, but not a simple
one. This could be used to help diagnose a problem with the code by giving a
reference between how complex a trigger is that fails.

Suggested-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
---
.../trigger/trigger-trace-marker-snapshot.tc | 74 +++++++++++++++++++
1 file changed, 74 insertions(+)
create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-snapshot.tc

diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-snapshot.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-snapshot.tc
new file mode 100644
index 000000000000..6748e8cb42d0
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-trace-marker-snapshot.tc
@@ -0,0 +1,74 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: trace_marker trigger - test snapshot trigger
+# flags: instance
+
+do_reset() {
+ reset_trigger
+ echo > set_event
+ echo 0 > snapshot
+ clear_trace
+}
+
+fail() { #msg
+ do_reset
+ echo $1
+ exit_fail
+}
+
+if [ ! -f set_event ]; then
+ echo "event tracing is not supported"
+ exit_unsupported
+fi
+
+if [ ! -f snapshot ]; then
+ echo "snapshot is not supported"
+ exit_unsupported
+fi
+
+if [ ! -d events/ftrace/print ]; then
+ echo "event trace_marker is not supported"
+ exit_unsupported
+fi
+
+if [ ! -f events/ftrace/print/trigger ]; then
+ echo "event trigger is not supported"
+ exit_unsupported
+fi
+
+test_trace() {
+ file=$1
+ x=$2
+
+ cat $file | while read line; do
+ comment=`echo $line | sed -e 's/^#//'`
+ if [ "$line" != "$comment" ]; then
+ continue
+ fi
+ echo "testing $line for >$x<"
+ match=`echo $line | sed -e "s/>$x<//"`
+ if [ "$line" == "$match" ]; then
+ fail "$line does not have >$x< in it"
+ fi
+ let x=$x+2
+ done
+}
+
+do_reset
+
+echo "Test snapshot trace_marker tigger"
+
+echo 'snapshot' > events/ftrace/print/trigger
+
+# make sure the snapshot is allocated
+
+grep -q 'Snapshot is allocated' snapshot
+
+for i in `seq 1 10` ; do echo "hello >$i<" > trace_marker; done
+
+test_trace trace 1
+test_trace snapshot 2
+
+do_reset
+
+exit 0
--
2.17.0