diff mbox series

[BUGFIX,v4,1/4] selftests/ftrace: Fix to check the existence of set_ftrace_filter

Message ID 157475725551.3389.16908546371847626653.stgit@devnote2 (mailing list archive)
State New
Headers show
Series selftests/ftrace: Fix ftracetest testcases for non-function tracer case | expand

Commit Message

Masami Hiramatsu (Google) Nov. 26, 2019, 8:34 a.m. UTC
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>
---
 Changes in v4:
 - Clear set_ftrace_notrace
---
 tools/testing/selftests/ftrace/test.d/functions |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Comments

Steven Rostedt Nov. 26, 2019, 5:24 p.m. UTC | #1
On Tue, 26 Nov 2019 17:34:16 +0900
Masami Hiramatsu <mhiramat@kernel.org> wrote:

> 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>

-- Steve
diff mbox series

Patch

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