Commit 51235096 authored by Ian Rogers's avatar Ian Rogers Committed by Namhyung Kim
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perf tests stat: Add test for error for an offline CPU 



Add a test that if an offline CPU is requested perf stat will fail.

  $ perf test -vv "perf stat tests"
  101: perf stat tests:
  --- start ---
  test child forked, pid 46965
  Basic stat command test
  Basic stat command test [Success]
  Null stat command test
  Null stat command test [Success]
  Offline CPU stat command test (cpu 8)
  Offline CPU stat command test [Success]
  stat record and report test
  stat record and report test [Success]
  stat record and script test
  stat record and script test [Success]
  stat repeat weak groups test
  stat repeat weak groups test [Success]
  Topdown event group test
  Topdown event group test [Success]
  Topdown weak groups test
  Topdown weak groups test [Skipped event parsing failed]
  cputype test
  cputype test [Success]
  hybrid test
  hybrid test [Success]
  ---- end(0) ----
  101: perf stat tests                                                 : Ok

Reported-by: default avatarThomas Richter <tmricht@linux.ibm.com>
Closes: https://lore.kernel.org/linux-perf-users/94313b82-888b-4f42-9fb0-4585f9e90080@linux.ibm.com/


Signed-off-by: default avatarIan Rogers <irogers@google.com>
Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
parent c9a8c343

tools/perf/tests/shell/stat.sh

+27 −0
Original line number Diff line number Diff line
@@ -27,6 +27,32 @@ test_null_stat() { 
  echo "Null stat command test [Success]"

}



find_offline_cpu() {

  for i in $(seq 1 4096)

  do

    if [[ ! -f /sys/devices/system/cpu/cpu$i/online || \

          $(cat /sys/devices/system/cpu/cpu$i/online) == "0" ]]

    then

      echo $i

      return

    fi

  done

  echo "Failed to find offline CPU"

  exit 1

}



test_offline_cpu_stat() {

  cpu=$(find_offline_cpu)

  echo "Offline CPU stat command test (cpu $cpu)"

  if ! perf stat "-C$cpu" -e cycles true 2>&1 | grep -E -q "No supported events found."

  then

    echo "Offline CPU stat command test [Failed]"

    err=1

    return

  fi

  echo "Offline CPU stat command test [Success]"

}



test_stat_record_report() {

  echo "stat record and report test"

  if ! perf stat record -e task-clock -o - true | perf stat report -i - 2>&1 | \
@@ -224,6 +250,7 @@ test_hybrid() { 


test_default_stat

test_null_stat

test_offline_cpu_stat

test_stat_record_report

test_stat_record_script

test_stat_repeat_weak_groups