101 lines
2.5 KiB
Plaintext
101 lines
2.5 KiB
Plaintext
|
|
||
|
|
clear_trace() { # reset trace output
|
||
|
|
echo > trace
|
||
|
|
}
|
||
|
|
|
||
|
|
disable_tracing() { # stop trace recording
|
||
|
|
echo 0 > tracing_on
|
||
|
|
}
|
||
|
|
|
||
|
|
enable_tracing() { # start trace recording
|
||
|
|
echo 1 > tracing_on
|
||
|
|
}
|
||
|
|
|
||
|
|
reset_tracer() { # reset the current tracer
|
||
|
|
echo nop > current_tracer
|
||
|
|
}
|
||
|
|
|
||
|
|
reset_trigger_file() {
|
||
|
|
# remove action triggers first
|
||
|
|
grep -H ':on[^:]*(' $@ |
|
||
|
|
while read line; do
|
||
|
|
cmd=`echo $line | cut -f2- -d: | cut -f1 -d"["`
|
||
|
|
file=`echo $line | cut -f1 -d:`
|
||
|
|
echo "!$cmd" >> $file
|
||
|
|
done
|
||
|
|
grep -Hv ^# $@ |
|
||
|
|
while read line; do
|
||
|
|
cmd=`echo $line | cut -f2- -d: | cut -f1 -d"["`
|
||
|
|
file=`echo $line | cut -f1 -d:`
|
||
|
|
echo "!$cmd" > $file
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
reset_trigger() { # reset all current setting triggers
|
||
|
|
if [ -d events/synthetic ]; then
|
||
|
|
reset_trigger_file events/synthetic/*/trigger
|
||
|
|
fi
|
||
|
|
reset_trigger_file events/*/*/trigger
|
||
|
|
}
|
||
|
|
|
||
|
|
reset_events_filter() { # reset all current setting filters
|
||
|
|
grep -v ^none events/*/*/filter |
|
||
|
|
while read line; do
|
||
|
|
echo 0 > `echo $line | cut -f1 -d:`
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
reset_ftrace_filter() { # reset all triggers in set_ftrace_filter
|
||
|
|
echo > set_ftrace_filter
|
||
|
|
grep -v '^#' set_ftrace_filter | while read t; do
|
||
|
|
tr=`echo $t | cut -d: -f2`
|
||
|
|
if [ "$tr" = "" ]; then
|
||
|
|
continue
|
||
|
|
fi
|
||
|
|
if ! grep -q "$t" set_ftrace_filter; then
|
||
|
|
continue;
|
||
|
|
fi
|
||
|
|
name=`echo $t | cut -d: -f1 | cut -d' ' -f1`
|
||
|
|
if [ $tr = "enable_event" -o $tr = "disable_event" ]; then
|
||
|
|
tr=`echo $t | cut -d: -f2-4`
|
||
|
|
limit=`echo $t | cut -d: -f5`
|
||
|
|
else
|
||
|
|
tr=`echo $t | cut -d: -f2`
|
||
|
|
limit=`echo $t | cut -d: -f3`
|
||
|
|
fi
|
||
|
|
if [ "$limit" != "unlimited" ]; then
|
||
|
|
tr="$tr:$limit"
|
||
|
|
fi
|
||
|
|
echo "!$name:$tr" > set_ftrace_filter
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
disable_events() {
|
||
|
|
echo 0 > events/enable
|
||
|
|
}
|
||
|
|
|
||
|
|
clear_synthetic_events() { # reset all current synthetic events
|
||
|
|
grep -v ^# synthetic_events |
|
||
|
|
while read line; do
|
||
|
|
echo "!$line" >> synthetic_events
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
initialize_ftrace() { # Reset ftrace to initial-state
|
||
|
|
# As the initial state, ftrace will be set to nop tracer,
|
||
|
|
# no events, no triggers, no filters, no function filters,
|
||
|
|
# no probes, and tracing on.
|
||
|
|
disable_tracing
|
||
|
|
reset_tracer
|
||
|
|
reset_trigger
|
||
|
|
reset_events_filter
|
||
|
|
disable_events
|
||
|
|
echo > set_event_pid # event tracer is always on
|
||
|
|
[ -f set_ftrace_filter ] && echo | tee set_ftrace_*
|
||
|
|
[ -f set_graph_function ] && echo | tee set_graph_*
|
||
|
|
[ -f stack_trace_filter ] && echo > stack_trace_filter
|
||
|
|
[ -f kprobe_events ] && echo > kprobe_events
|
||
|
|
[ -f uprobe_events ] && echo > uprobe_events
|
||
|
|
enable_tracing
|
||
|
|
}
|