ftrace: show unlimited when traceon or traceoff has no counter
Impact: clean up
The traceon and traceoff function probes are confusing to developers
to what happens when a counter is not specified. This should help
clear things up.
# echo "*:traceoff" > set_ftrace_filter
# cat /debug/tracing/set_ftrace_filter
#### all functions enabled ####
do_fork:traceoff:unlimited
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index 6ea73ed..4c113a8 100644
--- a/kernel/trace/trace_functions.c
+++ b/kernel/trace/trace_functions.c
@@ -296,7 +296,9 @@
else
seq_printf(m, "traceoff");
- if (count != -1)
+ if (count == -1)
+ seq_printf(m, ":unlimited\n");
+ else
seq_printf(m, ":count=%ld", count);
seq_putc(m, '\n');