2 clear_trace() { # reset trace output
6 disable_tracing() { # stop trace recording
10 enable_tracing() { # start trace recording
14 reset_tracer() { # reset the current tracer
15 echo nop > current_tracer
18 reset_trigger_file() {
19 # remove action triggers first
20 grep -H ':on[^:]*(' $@ |
22 cmd=`echo $line | cut -f2- -d: | cut -f1 -d" "`
23 file=`echo $line | cut -f1 -d:`
28 cmd=`echo $line | cut -f2- -d: | cut -f1 -d" "`
29 file=`echo $line | cut -f1 -d:`
34 reset_trigger() { # reset all current setting triggers
35 if [ -d events/synthetic ]; then
36 reset_trigger_file events/synthetic/*/trigger
38 reset_trigger_file events/*/*/trigger
41 reset_events_filter() { # reset all current setting filters
42 grep -v ^none events/*/*/filter |
44 echo 0 > `echo $line | cut -f1 -d:`
48 reset_ftrace_filter() { # reset all triggers in set_ftrace_filter
49 echo > set_ftrace_filter
50 grep -v '^#' set_ftrace_filter | while read t; do
51 tr=`echo $t | cut -d: -f2`
52 if [ "$tr" = "" ]; then
55 if [ $tr = "enable_event" -o $tr = "disable_event" ]; then
56 tr=`echo $t | cut -d: -f1-4`
57 limit=`echo $t | cut -d: -f5`
59 tr=`echo $t | cut -d: -f1-2`
60 limit=`echo $t | cut -d: -f3`
62 if [ "$limit" != "unlimited" ]; then
65 echo "!$tr" > set_ftrace_filter
70 echo 0 > events/enable
73 initialize_ftrace() { # Reset ftrace to initial-state
74 # As the initial state, ftrace will be set to nop tracer,
75 # no events, no triggers, no filters, no function filters,
76 # no probes, and tracing on.
82 echo > set_event_pid # event tracer is always on
83 [ -f set_ftrace_filter ] && echo | tee set_ftrace_*
84 [ -f set_graph_function ] && echo | tee set_graph_*
85 [ -f stack_trace_filter ] && echo > stack_trace_filter
86 [ -f kprobe_events ] && echo > kprobe_events
87 [ -f uprobe_events ] && echo > uprobe_events