1*4882a593Smuzhiyun#!/bin/sh 2*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 3*4882a593Smuzhiyun# description: Test ftrace direct functions against tracers 4*4882a593Smuzhiyun 5*4882a593Smuzhiyunrmmod ftrace-direct ||: 6*4882a593Smuzhiyunif ! modprobe ftrace-direct ; then 7*4882a593Smuzhiyun echo "No ftrace-direct sample module - please make CONFIG_SAMPLE_FTRACE_DIRECT=m" 8*4882a593Smuzhiyun exit_unresolved; 9*4882a593Smuzhiyunfi 10*4882a593Smuzhiyun 11*4882a593Smuzhiyunecho "Let the module run a little" 12*4882a593Smuzhiyunsleep 1 13*4882a593Smuzhiyun 14*4882a593Smuzhiyungrep -q "my_direct_func: waking up" trace 15*4882a593Smuzhiyun 16*4882a593Smuzhiyunrmmod ftrace-direct 17*4882a593Smuzhiyun 18*4882a593Smuzhiyuntest_tracer() { 19*4882a593Smuzhiyun tracer=$1 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun # tracer -> direct -> no direct > no tracer 22*4882a593Smuzhiyun echo $tracer > current_tracer 23*4882a593Smuzhiyun modprobe ftrace-direct 24*4882a593Smuzhiyun rmmod ftrace-direct 25*4882a593Smuzhiyun echo nop > current_tracer 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun # tracer -> direct -> no tracer > no direct 28*4882a593Smuzhiyun echo $tracer > current_tracer 29*4882a593Smuzhiyun modprobe ftrace-direct 30*4882a593Smuzhiyun echo nop > current_tracer 31*4882a593Smuzhiyun rmmod ftrace-direct 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun # direct -> tracer -> no tracer > no direct 34*4882a593Smuzhiyun modprobe ftrace-direct 35*4882a593Smuzhiyun echo $tracer > current_tracer 36*4882a593Smuzhiyun echo nop > current_tracer 37*4882a593Smuzhiyun rmmod ftrace-direct 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun # direct -> tracer -> no direct > no notracer 40*4882a593Smuzhiyun modprobe ftrace-direct 41*4882a593Smuzhiyun echo $tracer > current_tracer 42*4882a593Smuzhiyun rmmod ftrace-direct 43*4882a593Smuzhiyun echo nop > current_tracer 44*4882a593Smuzhiyun} 45*4882a593Smuzhiyun 46*4882a593Smuzhiyunfor t in `cat available_tracers`; do 47*4882a593Smuzhiyun if [ "$t" != "nop" ]; then 48*4882a593Smuzhiyun test_tracer $t 49*4882a593Smuzhiyun fi 50*4882a593Smuzhiyundone 51*4882a593Smuzhiyun 52*4882a593Smuzhiyunecho nop > current_tracer 53*4882a593Smuzhiyunrmmod ftrace-direct ||: 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun# Now do the same thing with another direct function registered 56*4882a593Smuzhiyunecho "Running with another ftrace direct function" 57*4882a593Smuzhiyun 58*4882a593Smuzhiyunrmmod ftrace-direct-too ||: 59*4882a593Smuzhiyunmodprobe ftrace-direct-too 60*4882a593Smuzhiyun 61*4882a593Smuzhiyunfor t in `cat available_tracers`; do 62*4882a593Smuzhiyun if [ "$t" != "nop" ]; then 63*4882a593Smuzhiyun test_tracer $t 64*4882a593Smuzhiyun fi 65*4882a593Smuzhiyundone 66*4882a593Smuzhiyun 67*4882a593Smuzhiyunecho nop > current_tracer 68*4882a593Smuzhiyunrmmod ftrace-direct ||: 69*4882a593Smuzhiyunrmmod ftrace-direct-too ||: 70