selftests/ftrace: Add snapshot and tracing_on test case
Steven Rostedt
maintainerPATCH 3/7 selftests/ftrace: Add snapshot and tracing_on test case
From: Masami Hiramatsu <mhiramat at kernel.org>
Add a testcase for checking snapshot and tracing_on relationship. This ensures that the snapshotting doesn't affect current tracing on/off settings.
Cc Tom Zanussi <tom.zanussi at linux.intel.com>
Cc Hiraku Toyooka <hiraku.toyooka at cybertrust.co.jp>
Signed-off-by Masami Hiramatsu <mhiramat at kernel.org>
Cc Ingo Molnar <mingo at redhat.com>
Cc Shuah Khan <shuah at kernel.org>
Cc linux-kselftest at vger.kernel.org
Signed-off-by Steven Rostedt (VMware) <rostedt at goodmis.org>
--- .../ftrace/test.d/00basic/snapshot.tc | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/snapshot.tc
tools/testing/selftests/ftrace/test.d/00basic/snapshot.tc new file +28 -0
@@ -0,0 +1,28 @@ +#!/bin/sh +# description: Snapshot and tracing setting +# flags: instance + +[ ! -f snapshot ] && exit_unsupported + +echo "Set tracing off" +echo 0 > tracing_on + +echo "Allocate and take a snapshot" +echo 1 > snapshot + +# Since trace buffer is empty, snapshot is also empty, but allocated +grep -q "Snapshot is allocated" snapshot + +echo "Ensure keep tracing off" +test `cat tracing_on` -eq 0 + +echo "Set tracing on" +echo 1 > tracing_on + +echo "Take a snapshot again" +echo 1 > snapshot + +echo "Ensure keep tracing on" +test `cat tracing_on` -eq 1 + +exit 0
Signature · 7 lines
2.17.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html