1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3# description: Kprobe dynamic event with function tracer 4# requires: kprobe_events stack_trace_filter function:tracer 5 6# prepare 7echo nop > current_tracer 8echo $FUNCTION_FORK > set_ftrace_filter 9echo "p:testprobe $FUNCTION_FORK" > kprobe_events 10 11# kprobe on / ftrace off 12echo 1 > events/kprobes/testprobe/enable 13echo > trace 14( echo "forked") 15grep testprobe trace 16! grep "$FUNCTION_FORK <-" trace 17 18# kprobe on / ftrace on 19echo function > current_tracer 20echo > trace 21( echo "forked") 22grep testprobe trace 23grep "$FUNCTION_FORK <-" trace 24 25# kprobe off / ftrace on 26echo 0 > events/kprobes/testprobe/enable 27echo > trace 28( echo "forked") 29! grep testprobe trace 30grep "$FUNCTION_FORK <-" trace 31 32# kprobe on / ftrace on 33echo 1 > events/kprobes/testprobe/enable 34echo function > current_tracer 35echo > trace 36( echo "forked") 37grep testprobe trace 38grep "$FUNCTION_FORK <-" trace 39 40# kprobe on / ftrace off 41echo nop > current_tracer 42echo > trace 43( echo "forked") 44grep testprobe trace 45! grep "$FUNCTION_FORK <-" trace 46