1#!/bin/sh 2# description: Kprobe dynamic event with function tracer 3 4[ -f kprobe_events ] || exit_unsupported # this is configurable 5grep function available_tracers || exit_unsupported # this is configurable 6 7# prepare 8echo nop > current_tracer 9echo do_fork > set_ftrace_filter 10echo 0 > events/enable 11echo > kprobe_events 12echo 'p:testprobe do_fork' > kprobe_events 13 14# kprobe on / ftrace off 15echo 1 > events/kprobes/testprobe/enable 16echo > trace 17( echo "forked") 18grep testprobe trace 19! grep 'do_fork <-' trace 20 21# kprobe on / ftrace on 22echo function > current_tracer 23echo > trace 24( echo "forked") 25grep testprobe trace 26grep 'do_fork <-' trace 27 28# kprobe off / ftrace on 29echo 0 > events/kprobes/testprobe/enable 30echo > trace 31( echo "forked") 32! grep testprobe trace 33grep 'do_fork <-' trace 34 35# kprobe on / ftrace on 36echo 1 > events/kprobes/testprobe/enable 37echo function > current_tracer 38echo > trace 39( echo "forked") 40grep testprobe trace 41grep 'do_fork <-' trace 42 43# kprobe on / ftrace off 44echo nop > current_tracer 45echo > trace 46( echo "forked") 47grep testprobe trace 48! grep 'do_fork <-' trace 49 50# cleanup 51echo nop > current_tracer 52echo > set_ftrace_filter 53echo 0 > events/kprobes/testprobe/enable 54echo > kprobe_events 55echo > trace 56