1#!/bin/sh 2# perf stat tests 3# SPDX-License-Identifier: GPL-2.0 4 5set -e 6 7err=0 8test_default_stat() { 9 echo "Basic stat command test" 10 if ! perf stat true 2>&1 | grep -E -q "Performance counter stats for 'true':" 11 then 12 echo "Basic stat command test [Failed]" 13 err=1 14 return 15 fi 16 echo "Basic stat command test [Success]" 17} 18 19test_stat_record_report() { 20 echo "stat record and report test" 21 if ! perf stat record -o - true | perf stat report -i - 2>&1 | \ 22 grep -E -q "Performance counter stats for 'pipe':" 23 then 24 echo "stat record and report test [Failed]" 25 err=1 26 return 27 fi 28 echo "stat record and report test [Success]" 29} 30 31test_stat_record_script() { 32 echo "stat record and script test" 33 if ! perf stat record -o - true | perf script -i - 2>&1 | \ 34 grep -E -q "CPU[[:space:]]+THREAD[[:space:]]+VAL[[:space:]]+ENA[[:space:]]+RUN[[:space:]]+TIME[[:space:]]+EVENT" 35 then 36 echo "stat record and script test [Failed]" 37 err=1 38 return 39 fi 40 echo "stat record and script test [Success]" 41} 42 43test_stat_repeat_weak_groups() { 44 echo "stat repeat weak groups test" 45 if ! perf stat -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}' \ 46 true 2>&1 | grep -q 'seconds time elapsed' 47 then 48 echo "stat repeat weak groups test [Skipped event parsing failed]" 49 return 50 fi 51 if ! perf stat -r2 -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}:W' \ 52 true > /dev/null 2>&1 53 then 54 echo "stat repeat weak groups test [Failed]" 55 err=1 56 return 57 fi 58 echo "stat repeat weak groups test [Success]" 59} 60 61test_topdown_groups() { 62 # Topdown events must be grouped with the slots event first. Test that 63 # parse-events reorders this. 64 echo "Topdown event group test" 65 if ! perf stat -e '{slots,topdown-retiring}' true > /dev/null 2>&1 66 then 67 echo "Topdown event group test [Skipped event parsing failed]" 68 return 69 fi 70 if perf stat -e '{slots,topdown-retiring}' true 2>&1 | grep -E -q "<not supported>" 71 then 72 echo "Topdown event group test [Failed events not supported]" 73 err=1 74 return 75 fi 76 if perf stat -e 'instructions,topdown-retiring,slots' true 2>&1 | grep -E -q "<not supported>" 77 then 78 echo "Topdown event group test [Failed slots not reordered first in no-group case]" 79 err=1 80 return 81 fi 82 if perf stat -e '{instructions,topdown-retiring,slots}' true 2>&1 | grep -E -q "<not supported>" 83 then 84 echo "Topdown event group test [Failed slots not reordered first in single group case]" 85 err=1 86 return 87 fi 88 if perf stat -e '{instructions,slots},topdown-retiring' true 2>&1 | grep -E -q "<not supported>" 89 then 90 echo "Topdown event group test [Failed topdown metrics event not move into slots group]" 91 err=1 92 return 93 fi 94 if perf stat -e '{instructions,slots},{topdown-retiring}' true 2>&1 | grep -E -q "<not supported>" 95 then 96 echo "Topdown event group test [Failed topdown metrics group not merge into slots group]" 97 err=1 98 return 99 fi 100 if perf stat -e '{instructions,r400,r8000}' true 2>&1 | grep -E -q "<not supported>" 101 then 102 echo "Topdown event group test [Failed raw format slots not reordered first]" 103 err=1 104 return 105 fi 106 echo "Topdown event group test [Success]" 107} 108 109test_topdown_weak_groups() { 110 # Weak groups break if the perf_event_open of multiple grouped events 111 # fails. Breaking a topdown group causes the events to fail. Test a very large 112 # grouping to see that the topdown events aren't broken out. 113 echo "Topdown weak groups test" 114 ok_grouping="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring},branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references" 115 if ! perf stat --no-merge -e "$ok_grouping" true > /dev/null 2>&1 116 then 117 echo "Topdown weak groups test [Skipped event parsing failed]" 118 return 119 fi 120 group_needs_break="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring,branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references}:W" 121 if perf stat --no-merge -e "$group_needs_break" true 2>&1 | grep -E -q "<not supported>" 122 then 123 echo "Topdown weak groups test [Failed events not supported]" 124 err=1 125 return 126 fi 127 echo "Topdown weak groups test [Success]" 128} 129 130test_cputype() { 131 # Test --cputype argument. 132 echo "cputype test" 133 134 # Bogus PMU should fail. 135 if perf stat --cputype="123" -e instructions true > /dev/null 2>&1 136 then 137 echo "cputype test [Bogus PMU didn't fail]" 138 err=1 139 return 140 fi 141 142 # Find a known PMU for cputype. 143 pmu="" 144 devs="/sys/bus/event_source/devices" 145 for i in $devs/cpu $devs/cpu_atom $devs/armv8_pmuv3_0 $devs/armv8_cortex_* 146 do 147 i_base=$(basename "$i") 148 if test -d "$i" 149 then 150 pmu="$i_base" 151 break 152 fi 153 if perf stat -e "$i_base/instructions/" true > /dev/null 2>&1 154 then 155 pmu="$i_base" 156 break 157 fi 158 done 159 if test "x$pmu" = "x" 160 then 161 echo "cputype test [Skipped known PMU not found]" 162 return 163 fi 164 165 # Test running with cputype produces output. 166 if ! perf stat --cputype="$pmu" -e instructions true 2>&1 | grep -E -q "instructions" 167 then 168 echo "cputype test [Failed count missed with given filter]" 169 err=1 170 return 171 fi 172 echo "cputype test [Success]" 173} 174 175test_hybrid() { 176 # Test the default stat command on hybrid devices opens one cycles event for 177 # each CPU type. 178 echo "hybrid test" 179 180 # Count the number of core PMUs, assume minimum of 1 181 pmus=$(ls /sys/bus/event_source/devices/*/cpus 2>/dev/null | wc -l) 182 if [ "$pmus" -lt 1 ] 183 then 184 pmus=1 185 fi 186 187 # Run default Perf stat 188 cycles_events=$(perf stat -- true 2>&1 | grep -E "/cycles/[uH]*| cycles[:uH]* " -c) 189 190 if [ "$pmus" -ne "$cycles_events" ] 191 then 192 echo "hybrid test [Found $pmus PMUs but $cycles_events cycles events. Failed]" 193 err=1 194 return 195 fi 196 echo "hybrid test [Success]" 197} 198 199test_default_stat 200test_stat_record_report 201test_stat_record_script 202test_stat_repeat_weak_groups 203test_topdown_groups 204test_topdown_weak_groups 205test_cputype 206test_hybrid 207exit $err 208