90 lines · bash
1#!/bin/sh2# perf ftrace tests3# SPDX-License-Identifier: GPL-2.04 5set -e6 7# perf ftrace commands only works for root8if [ "$(id -u)" != 0 ]; then9 echo "perf ftrace test [Skipped: no permission]"10 exit 211fi12 13output=$(mktemp /tmp/__perf_test.ftrace.XXXXXX)14 15cleanup() {16 rm -f "${output}"17 18 trap - EXIT TERM INT19}20 21trap_cleanup() {22 cleanup23 exit 124}25trap trap_cleanup EXIT TERM INT26 27# this will be set in test_ftrace_trace()28target_function=29 30test_ftrace_list() {31 echo "perf ftrace list test"32 perf ftrace -F > "${output}"33 # this will be used in test_ftrace_trace()34 sleep_functions=$(grep 'sys_.*sleep$' "${output}")35 echo "syscalls for sleep:"36 echo "${sleep_functions}"37 echo "perf ftrace list test [Success]"38}39 40test_ftrace_trace() {41 echo "perf ftrace trace test"42 perf ftrace trace --graph-opts depth=5 sleep 0.1 > "${output}"43 # it should have some function name contains 'sleep'44 grep "^#" "${output}"45 grep -F 'sleep()' "${output}"46 # find actual syscall function name47 for FN in ${sleep_functions}; do48 if grep -q "${FN}" "${output}"; then49 target_function="${FN}"50 echo "perf ftrace trace test [Success]"51 return52 fi53 done54 55 echo "perf ftrace trace test [Failure: sleep syscall not found]"56 exit 157}58 59test_ftrace_latency() {60 echo "perf ftrace latency test"61 echo "target function: ${target_function}"62 perf ftrace latency -T "${target_function}" sleep 0.1 > "${output}"63 grep "^#" "${output}"64 grep "###" "${output}"65 echo "perf ftrace latency test [Success]"66}67 68test_ftrace_profile() {69 echo "perf ftrace profile test"70 perf ftrace profile sleep 0.1 > "${output}"71 grep ^# "${output}"72 grep sleep "${output}"73 grep schedule "${output}"74 grep execve "${output}"75 time_re="[[:space:]]+10[[:digit:]]{4}\.[[:digit:]]{3}"76 # 100283.000 100283.000 100283.000 1 __x64_sys_clock_nanosleep77 # Check for one *clock_nanosleep line with a Count of just 1 that takes a bit more than 0.1 seconds78 # Strip the _x64_sys part to work with other architectures79 grep -E "^${time_re}${time_re}${time_re}[[:space:]]+1[[:space:]]+.*clock_nanosleep" "${output}"80 echo "perf ftrace profile test [Success]"81}82 83test_ftrace_list84test_ftrace_trace85test_ftrace_latency86test_ftrace_profile87 88cleanup89exit 090