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Commit | Line | Data |
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ee3988c7 SRRH |
1 | |
2 | clear_trace() { # reset trace output | |
3 | echo > trace | |
4 | } | |
5 | ||
6 | disable_tracing() { # stop trace recording | |
7 | echo 0 > tracing_on | |
8 | } | |
9 | ||
10 | enable_tracing() { # start trace recording | |
11 | echo 1 > tracing_on | |
12 | } | |
13 | ||
14 | reset_tracer() { # reset the current tracer | |
15 | echo nop > current_tracer | |
16 | } | |
cfa0963d MH |
17 | |
18 | reset_trigger() { # reset all current setting triggers | |
19 | grep -v ^# events/*/*/trigger | | |
20 | while read line; do | |
21 | cmd=`echo $line | cut -f2- -d: | cut -f1 -d" "` | |
22 | echo "!$cmd" > `echo $line | cut -f1 -d:` | |
23 | done | |
24 | } | |
25 | ||
131f840d MH |
26 | reset_events_filter() { # reset all current setting filters |
27 | grep -v ^none events/*/*/filter | | |
28 | while read line; do | |
29 | echo 0 > `echo $line | cut -f1 -d:` | |
30 | done | |
31 | } | |
32 | ||
8e5e19c1 SRV |
33 | reset_ftrace_filter() { # reset all triggers in set_ftrace_filter |
34 | echo > set_ftrace_filter | |
35 | grep -v '^#' set_ftrace_filter | while read t; do | |
36 | tr=`echo $t | cut -d: -f2` | |
d2ffb8d3 | 37 | if [ "$tr" = "" ]; then |
8e5e19c1 SRV |
38 | continue |
39 | fi | |
d2ffb8d3 | 40 | if [ $tr = "enable_event" -o $tr = "disable_event" ]; then |
8e5e19c1 SRV |
41 | tr=`echo $t | cut -d: -f1-4` |
42 | limit=`echo $t | cut -d: -f5` | |
43 | else | |
44 | tr=`echo $t | cut -d: -f1-2` | |
45 | limit=`echo $t | cut -d: -f3` | |
46 | fi | |
47 | if [ "$limit" != "unlimited" ]; then | |
48 | tr="$tr:$limit" | |
49 | fi | |
50 | echo "!$tr" > set_ftrace_filter | |
51 | done | |
52 | } | |
53 | ||
131f840d MH |
54 | disable_events() { |
55 | echo 0 > events/enable | |
56 | } | |
57 | ||
58 | initialize_ftrace() { # Reset ftrace to initial-state | |
59 | # As the initial state, ftrace will be set to nop tracer, | |
60 | # no events, no triggers, no filters, no function filters, | |
61 | # no probes, and tracing on. | |
62 | disable_tracing | |
63 | reset_tracer | |
64 | reset_trigger | |
65 | reset_events_filter | |
66 | disable_events | |
67 | echo > set_event_pid # event tracer is always on | |
68 | [ -f set_ftrace_filter ] && echo | tee set_ftrace_* | |
69 | [ -f set_graph_function ] && echo | tee set_graph_* | |
70 | [ -f stack_trace_filter ] && echo > stack_trace_filter | |
71 | [ -f kprobe_events ] && echo > kprobe_events | |
72 | [ -f uprobe_events ] && echo > uprobe_events | |
73 | enable_tracing | |
74 | } |