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 '{topdown-retiring,slots}' true 2>&1 | grep -E -q "<not supported>" 77 then 78 echo "Topdown event group test [Failed slots not reordered first]" 79 err=1 80 return 81 fi 82 echo "Topdown event group test [Success]" 83} 84 85test_topdown_weak_groups() { 86 # Weak groups break if the perf_event_open of multiple grouped events 87 # fails. Breaking a topdown group causes the events to fail. Test a very large 88 # grouping to see that the topdown events aren't broken out. 89 echo "Topdown weak groups test" 90 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" 91 if ! perf stat --no-merge -e "$ok_grouping" true > /dev/null 2>&1 92 then 93 echo "Topdown weak groups test [Skipped event parsing failed]" 94 return 95 fi 96 group_needs_break="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring,branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references}:W" 97 if perf stat --no-merge -e "$group_needs_break" true 2>&1 | grep -E -q "<not supported>" 98 then 99 echo "Topdown weak groups test [Failed events not supported]" 100 err=1 101 return 102 fi 103 echo "Topdown weak groups test [Success]" 104} 105 106test_cputype() { 107 # Test --cputype argument. 108 echo "cputype test" 109 110 # Bogus PMU should fail. 111 if perf stat --cputype="123" -e instructions true > /dev/null 2>&1 112 then 113 echo "cputype test [Bogus PMU didn't fail]" 114 err=1 115 return 116 fi 117 118 # Find a known PMU for cputype. 119 pmu="" 120 devs="/sys/bus/event_source/devices" 121 for i in $devs/cpu $devs/cpu_atom $devs/armv8_pmuv3_0 $devs/armv8_cortex_* 122 do 123 i_base=$(basename "$i") 124 if test -d "$i" 125 then 126 pmu="$i_base" 127 break 128 fi 129 if perf stat -e "$i_base/instructions/" true > /dev/null 2>&1 130 then 131 pmu="$i_base" 132 break 133 fi 134 done 135 if test "x$pmu" = "x" 136 then 137 echo "cputype test [Skipped known PMU not found]" 138 return 139 fi 140 141 # Test running with cputype produces output. 142 if ! perf stat --cputype="$pmu" -e instructions true 2>&1 | grep -E -q "instructions" 143 then 144 echo "cputype test [Failed count missed with given filter]" 145 err=1 146 return 147 fi 148 echo "cputype test [Success]" 149} 150 151test_hybrid() { 152 # Test the default stat command on hybrid devices opens one cycles event for 153 # each CPU type. 154 echo "hybrid test" 155 156 # Count the number of core PMUs, assume minimum of 1 157 pmus=$(ls /sys/bus/event_source/devices/*/cpus 2>/dev/null | wc -l) 158 if [ "$pmus" -lt 1 ] 159 then 160 pmus=1 161 fi 162 163 # Run default Perf stat 164 cycles_events=$(perf stat -- true 2>&1 | grep -E "/cycles/| cycles " | wc -l) 165 166 if [ "$pmus" -ne "$cycles_events" ] 167 then 168 echo "hybrid test [Found $pmus PMUs but $cycles_events cycles events. Failed]" 169 err=1 170 return 171 fi 172 echo "hybrid test [Success]" 173} 174 175test_default_stat 176test_stat_record_report 177test_stat_record_script 178test_stat_repeat_weak_groups 179test_topdown_groups 180test_topdown_weak_groups 181test_cputype 182test_hybrid 183exit $err 184