Commit 831d06c8 authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
Browse files

perf test: Add a basic offcpu profiling test 



  $ sudo ./perf test -v offcpu
   88: perf record offcpu profiling tests                              :
  --- start ---
  test child forked, pid 685966
  Basic off-cpu test
  Basic off-cpu test [Success]
  test child finished with 0
  ---- end ----
  perf record offcpu profiling tests: Ok

Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: default avatarIan Rogers <irogers@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Blake Jones <blakejones@google.com>
Cc: Hao Luo <haoluo@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: bpf@vger.kernel.org
Link: https://lore.kernel.org/r/20220518224725.742882-7-namhyung@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 685439a7

tools/perf/tests/shell/record_offcpu.sh

0 → 100755
+60 −0
Original line number Diff line number Diff line 
#!/bin/sh

# perf record offcpu profiling tests

# SPDX-License-Identifier: GPL-2.0



set -e



err=0

perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)



cleanup() {

  rm -f ${perfdata}

  rm -f ${perfdata}.old

  trap - exit term int

}



trap_cleanup() {

  cleanup

  exit 1

}

trap trap_cleanup exit term int



test_offcpu() {

  echo "Basic off-cpu test"

  if [ `id -u` != 0 ]

  then

    echo "Basic off-cpu test [Skipped permission]"

    err=2

    return

  fi

  if perf record --off-cpu -o ${perfdata} --quiet true 2>&1 | grep BUILD_BPF_SKEL

  then

    echo "Basic off-cpu test [Skipped missing BPF support]"

    err=2

    return

  fi

  if ! perf record --off-cpu -e dummy -o ${perfdata} sleep 1 2> /dev/null

  then

    echo "Basic off-cpu test [Failed record]"

    err=1

    return

  fi

  if ! perf evlist -i ${perfdata} | grep -q "offcpu-time"

  then

    echo "Basic off-cpu test [Failed record]"

    err=1

    return

  fi

  if ! perf report -i ${perfdata} -q --percent-limit=90 | egrep -q sleep

  then

    echo "Basic off-cpu test [Failed missing output]"

    err=1

    return

  fi

  echo "Basic off-cpu test [Success]"

}



test_offcpu



cleanup

exit $err