tools/perf/tests/shell/stat.sh

   1 #!/bin/sh
   2 # perf stat tests
   3 # SPDX-License-Identifier: GPL-2.0
   4
   5 set -e
   6
   7 err=0
   8 test_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
  19 test_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
  31 test_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
  43 test_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
  61 test_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
 109 test_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
 130 test_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="$pmu" -e instructions true 2>&1 | grep -E -q "instructions"
 167   then
 168     echo "cputype test [Failed count missed with given filter]"
 169     err=1
 170     return
 171   fi
 172   echo "cputype test [Success]"
 173 }
 174
 175 test_hybrid() {
 176   # Test the default stat command on hybrid devices opens one cycles event for
 177   # each CPU type.
 178   echo "hybrid test"
 179
 180   # Count the number of core PMUs, assume minimum of 1
 181   pmus=$(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
 199 test_default_stat
 200 test_stat_record_report
 201 test_stat_record_script
 202 test_stat_repeat_weak_groups
 203 test_topdown_groups
 204 test_topdown_weak_groups
 205 test_cputype
 206 test_hybrid
 207 exit $err