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selftests: ftrace: Check whether snapshot trigger is supported correctly
authorMasami Hiramatsu <mhiramat@kernel.org>
Wed, 16 Nov 2016 08:13:32 +0000 (17:13 +0900)
committerSteven Rostedt <rostedt@goodmis.org>
Tue, 22 Nov 2016 19:24:14 +0000 (14:24 -0500)
If "snapshot" special file doesn't exist, that kernel does
not support snapshot and snapshot trigger too. In that case
snapshot trigger test results to unsupported instead of fail.

Link: http://lkml.kernel.org/r/147928401215.22982.10411665829041109794.stgit@devbox
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc patch | blob | blame | history

diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc
index f84b80d551a2804bc44c29f4392453dd4690bac8..ed94f0c4e0e4610b01025d71c1b0b2d41b7fcc44 100644 (file)
--- a/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc
+++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-snapshot.tc
@@ -23,6 +23,11 @@ if [ ! -f events/sched/sched_process_fork/trigger ]; then
     exit_unsupported
 fi
 
+if [ ! -f snapshot ]; then
+    echo "snapshot is not supported"
+    exit_unsupported
+fi
+
 reset_tracer
 do_reset