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authorMasami Hiramatsu <mhiramat@kernel.org>2019-11-26 17:34:16 +0900
committerShuah Khan <skhan@linuxfoundation.org>2019-12-09 10:53:04 -0700
commitfd1baf6ca2ea3550ea47f2bb0bdcf34ec764a779 (patch)
tree7b9bcaa90ad33c33403cd6947405984d66df82ea /tools/testing/selftests/ftrace
parentLinux 5.5-rc1 (diff)
downloadwireguard-linux-fd1baf6ca2ea3550ea47f2bb0bdcf34ec764a779.tar.xz
wireguard-linux-fd1baf6ca2ea3550ea47f2bb0bdcf34ec764a779.zip
selftests/ftrace: Fix to check the existence of set_ftrace_filter
If we run ftracetest on the kernel with CONFIG_DYNAMIC_FTRACE=n, there is no set_ftrace_filter and all test cases are failed, because reset_ftrace_filter() returns an error. Let's check whether set_ftrace_filter exists in reset_ftrace_filter() and clean up only set_ftrace_notrace in initialize_ftrace(). Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools/testing/selftests/ftrace')
-rw-r--r--tools/testing/selftests/ftrace/test.d/functions5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions
index 86986c4bba54..5d4550591ff9 100644
--- a/tools/testing/selftests/ftrace/test.d/functions
+++ b/tools/testing/selftests/ftrace/test.d/functions
@@ -46,6 +46,9 @@ reset_events_filter() { # reset all current setting filters
}
reset_ftrace_filter() { # reset all triggers in set_ftrace_filter
+ if [ ! -f set_ftrace_filter ]; then
+ return 0
+ fi
echo > set_ftrace_filter
grep -v '^#' set_ftrace_filter | while read t; do
tr=`echo $t | cut -d: -f2`
@@ -93,7 +96,7 @@ initialize_ftrace() { # Reset ftrace to initial-state
disable_events
[ -f set_event_pid ] && echo > set_event_pid
[ -f set_ftrace_pid ] && echo > set_ftrace_pid
- [ -f set_ftrace_filter ] && echo | tee set_ftrace_*
+ [ -f set_ftrace_notrace ] && echo > set_ftrace_notrace
[ -f set_graph_function ] && echo | tee set_graph_*
[ -f stack_trace_filter ] && echo > stack_trace_filter
[ -f kprobe_events ] && echo > kprobe_events