1#!/bin/sh 2# perf record tests 3# SPDX-License-Identifier: GPL-2.0 4 5set -e 6 7shelldir=$(dirname "$0") 8# shellcheck source=lib/waiting.sh 9. "${shelldir}"/lib/waiting.sh 10 11# shellcheck source=lib/perf_has_symbol.sh 12. "${shelldir}"/lib/perf_has_symbol.sh 13 14testsym="test_loop" 15 16skip_test_missing_symbol ${testsym} 17 18err=0 19perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) 20testprog="perf test -w thloop" 21cpu_pmu_dir="/sys/bus/event_source/devices/cpu*" 22br_cntr_file="/caps/branch_counter_nr" 23br_cntr_output="branch stack counters" 24 25cleanup() { 26 rm -rf "${perfdata}" 27 rm -rf "${perfdata}".old 28 29 trap - EXIT TERM INT 30} 31 32trap_cleanup() { 33 cleanup 34 exit 1 35} 36trap trap_cleanup EXIT TERM INT 37 38test_per_thread() { 39 echo "Basic --per-thread mode test" 40 if ! perf record -o /dev/null --quiet ${testprog} 2> /dev/null 41 then 42 echo "Per-thread record [Skipped event not supported]" 43 return 44 fi 45 if ! perf record --per-thread -o "${perfdata}" ${testprog} 2> /dev/null 46 then 47 echo "Per-thread record [Failed record]" 48 err=1 49 return 50 fi 51 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" 52 then 53 echo "Per-thread record [Failed missing output]" 54 err=1 55 return 56 fi 57 58 # run the test program in background (for 30 seconds) 59 ${testprog} 30 & 60 TESTPID=$! 61 62 rm -f "${perfdata}" 63 64 wait_for_threads ${TESTPID} 2 65 perf record -p "${TESTPID}" --per-thread -o "${perfdata}" sleep 1 2> /dev/null 66 kill ${TESTPID} 67 68 if [ ! -e "${perfdata}" ] 69 then 70 echo "Per-thread record [Failed record -p]" 71 err=1 72 return 73 fi 74 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" 75 then 76 echo "Per-thread record [Failed -p missing output]" 77 err=1 78 return 79 fi 80 81 echo "Basic --per-thread mode test [Success]" 82} 83 84test_register_capture() { 85 echo "Register capture test" 86 if ! perf list | grep -q 'br_inst_retired.near_call' 87 then 88 echo "Register capture test [Skipped missing event]" 89 return 90 fi 91 if ! perf record --intr-regs=\? 2>&1 | grep -q 'available registers: AX BX CX DX SI DI BP SP IP FLAGS CS SS R8 R9 R10 R11 R12 R13 R14 R15' 92 then 93 echo "Register capture test [Skipped missing registers]" 94 return 95 fi 96 if ! perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call \ 97 -c 1000 --per-thread ${testprog} 2> /dev/null \ 98 | perf script -F ip,sym,iregs -i - 2> /dev/null \ 99 | grep -q "DI:" 100 then 101 echo "Register capture test [Failed missing output]" 102 err=1 103 return 104 fi 105 echo "Register capture test [Success]" 106} 107 108test_system_wide() { 109 echo "Basic --system-wide mode test" 110 if ! perf record -aB --synth=no -o "${perfdata}" ${testprog} 2> /dev/null 111 then 112 echo "System-wide record [Skipped not supported]" 113 return 114 fi 115 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" 116 then 117 echo "System-wide record [Failed missing output]" 118 err=1 119 return 120 fi 121 if ! perf record -aB --synth=no -e cpu-clock,cs --threads=cpu \ 122 -o "${perfdata}" ${testprog} 2> /dev/null 123 then 124 echo "System-wide record [Failed record --threads option]" 125 err=1 126 return 127 fi 128 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" 129 then 130 echo "System-wide record [Failed --threads missing output]" 131 err=1 132 return 133 fi 134 echo "Basic --system-wide mode test [Success]" 135} 136 137test_workload() { 138 echo "Basic target workload test" 139 if ! perf record -o "${perfdata}" ${testprog} 2> /dev/null 140 then 141 echo "Workload record [Failed record]" 142 err=1 143 return 144 fi 145 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" 146 then 147 echo "Workload record [Failed missing output]" 148 err=1 149 return 150 fi 151 if ! perf record -e cpu-clock,cs --threads=package \ 152 -o "${perfdata}" ${testprog} 2> /dev/null 153 then 154 echo "Workload record [Failed record --threads option]" 155 err=1 156 return 157 fi 158 if ! perf report -i "${perfdata}" -q | grep -q "${testsym}" 159 then 160 echo "Workload record [Failed --threads missing output]" 161 err=1 162 return 163 fi 164 echo "Basic target workload test [Success]" 165} 166 167test_branch_counter() { 168 echo "Basic branch counter test" 169 # Check if the branch counter feature is supported 170 for dir in $cpu_pmu_dir 171 do 172 if [ ! -e "$dir$br_cntr_file" ] 173 then 174 echo "branch counter feature not supported on all core PMUs ($dir) [Skipped]" 175 return 176 fi 177 done 178 if ! perf record -o "${perfdata}" -j any,counter ${testprog} 2> /dev/null 179 then 180 echo "Basic branch counter test [Failed record]" 181 err=1 182 return 183 fi 184 if ! perf report -i "${perfdata}" -D -q | grep -q "$br_cntr_output" 185 then 186 echo "Basic branch record test [Failed missing output]" 187 err=1 188 return 189 fi 190 echo "Basic branch counter test [Success]" 191} 192 193test_per_thread 194test_register_capture 195test_system_wide 196test_workload 197test_branch_counter 198 199cleanup 200exit $err 201