#!/bin/sh# perf stat tests# SPDX-License-Identifier: GPL-2.0 set -e err=0test_default_stat() {  echo "Basic stat command test"  if ! perf stat true 2>&1 | grep -E -q "Performance counter stats for 'true':"  then    echo "Basic stat command test [Failed]"    err=1    return  fi  echo "Basic stat command test [Success]"} test_stat_record_report() {  echo "stat record and report test"  if ! perf stat record -o - true | perf stat report -i - 2>&1 | \    grep -E -q "Performance counter stats for 'pipe':"  then    echo "stat record and report test [Failed]"    err=1    return  fi  echo "stat record and report test [Success]"} test_stat_record_script() {  echo "stat record and script test"  if ! perf stat record -o - true | perf script -i - 2>&1 | \    grep -E -q "CPU[[:space:]]+THREAD[[:space:]]+VAL[[:space:]]+ENA[[:space:]]+RUN[[:space:]]+TIME[[:space:]]+EVENT"  then    echo "stat record and script test [Failed]"    err=1    return  fi  echo "stat record and script test [Success]"} test_stat_repeat_weak_groups() {  echo "stat repeat weak groups test"  if ! perf stat -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}' \     true 2>&1 | grep -q 'seconds time elapsed'  then    echo "stat repeat weak groups test [Skipped event parsing failed]"    return  fi  if ! perf stat -r2 -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}:W' \    true > /dev/null 2>&1  then    echo "stat repeat weak groups test [Failed]"    err=1    return  fi  echo "stat repeat weak groups test [Success]"} test_topdown_groups() {  # Topdown events must be grouped with the slots event first. Test that  # parse-events reorders this.  echo "Topdown event group test"  if ! perf stat -e '{slots,topdown-retiring}' true > /dev/null 2>&1  then    echo "Topdown event group test [Skipped event parsing failed]"    return  fi  if perf stat -e '{slots,topdown-retiring}' true 2>&1 | grep -E -q "<not supported>"  then    echo "Topdown event group test [Failed events not supported]"    err=1    return  fi  if perf stat -e 'instructions,topdown-retiring,slots' true 2>&1 | grep -E -q "<not supported>"  then    echo "Topdown event group test [Failed slots not reordered first in no-group case]"    err=1    return  fi  if perf stat -e '{instructions,topdown-retiring,slots}' true 2>&1 | grep -E -q "<not supported>"  then    echo "Topdown event group test [Failed slots not reordered first in single group case]"    err=1    return  fi  if perf stat -e '{instructions,slots},topdown-retiring' true 2>&1 | grep -E -q "<not supported>"  then    echo "Topdown event group test [Failed topdown metrics event not move into slots group]"    err=1    return  fi  if perf stat -e '{instructions,slots},{topdown-retiring}' true 2>&1 | grep -E -q "<not supported>"  then    echo "Topdown event group test [Failed topdown metrics group not merge into slots group]"    err=1    return  fi  if perf stat -e '{instructions,r400,r8000}' true 2>&1 | grep -E -q "<not supported>"  then    echo "Topdown event group test [Failed raw format slots not reordered first]"    err=1    return  fi  echo "Topdown event group test [Success]"} test_topdown_weak_groups() {  # Weak groups break if the perf_event_open of multiple grouped events  # fails. Breaking a topdown group causes the events to fail. Test a very large  # grouping to see that the topdown events aren't broken out.  echo "Topdown weak groups test"  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"  if ! perf stat --no-merge -e "$ok_grouping" true > /dev/null 2>&1  then    echo "Topdown weak groups test [Skipped event parsing failed]"    return  fi  group_needs_break="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring,branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references}:W"  if perf stat --no-merge -e "$group_needs_break" true 2>&1 | grep -E -q "<not supported>"  then    echo "Topdown weak groups test [Failed events not supported]"    err=1    return  fi  echo "Topdown weak groups test [Success]"} test_cputype() {  # Test --cputype argument.  echo "cputype test"   # Bogus PMU should fail.  if perf stat --cputype="123" -e instructions true > /dev/null 2>&1  then    echo "cputype test [Bogus PMU didn't fail]"    err=1    return  fi   # Find a known PMU for cputype.  pmu=""  devs="/sys/bus/event_source/devices"  for i in $devs/cpu $devs/cpu_atom $devs/armv8_pmuv3_0 $devs/armv8_cortex_*  do    i_base=$(basename "$i")    if test -d "$i"    then      pmu="$i_base"      break    fi    if perf stat -e "$i_base/instructions/" true > /dev/null 2>&1    then      pmu="$i_base"      break    fi  done  if test "x$pmu" = "x"  then    echo "cputype test [Skipped known PMU not found]"    return  fi   # Test running with cputype produces output.  if ! perf stat --cputype="$pmu" -e instructions true 2>&1 | grep -E -q "instructions"  then    echo "cputype test [Failed count missed with given filter]"    err=1    return  fi  echo "cputype test [Success]"} test_hybrid() {  # Test the default stat command on hybrid devices opens one cycles event for  # each CPU type.  echo "hybrid test"   # Count the number of core PMUs, assume minimum of 1  pmus=$(ls /sys/bus/event_source/devices/*/cpus 2>/dev/null | wc -l)  if [ "$pmus" -lt 1 ]  then    pmus=1  fi   # Run default Perf stat  cycles_events=$(perf stat -- true 2>&1 | grep -E "/cycles/[uH]*|  cycles[:uH]*  " -c)   if [ "$pmus" -ne "$cycles_events" ]  then    echo "hybrid test [Found $pmus PMUs but $cycles_events cycles events. Failed]"    err=1    return  fi  echo "hybrid test [Success]"} test_default_stattest_stat_record_reporttest_stat_record_scripttest_stat_repeat_weak_groupstest_topdown_groupstest_topdown_weak_groupstest_cputypetest_hybridexit $err