Commit 144081ef authored by Ian Rogers's avatar Ian Rogers Committed by Arnaldo Carvalho de Melo
Browse files

perf test: Add basic 'perf diff' test 

There are some old bug reports on perf diff crashing:

https://rhaas.blogspot.com/2012/06/perf-good-bad-ugly.html



Happening across them I was prompted to add two very basic tests that
will give some 'perf diff' coverage.

Signed-off-by: default avatarIan Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231120190408.281826-1-irogers@google.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent a4320085

tools/perf/tests/shell/diff.sh

0 → 100755
+101 −0
Original line number Diff line number Diff line 
#!/bin/sh

# perf diff tests

# SPDX-License-Identifier: GPL-2.0



set -e



err=0

perfdata1=$(mktemp /tmp/__perf_test.perf.data.XXXXX)

perfdata2=$(mktemp /tmp/__perf_test.perf.data.XXXXX)

perfdata3=$(mktemp /tmp/__perf_test.perf.data.XXXXX)

testprog="perf test -w thloop"

testsym="test_loop"



cleanup() {

  rm -rf "${perfdata1}"

  rm -rf "${perfdata1}".old

  rm -rf "${perfdata2}"

  rm -rf "${perfdata2}".old

  rm -rf "${perfdata3}"

  rm -rf "${perfdata3}".old



  trap - EXIT TERM INT

}



trap_cleanup() {

  cleanup

  exit 1

}

trap trap_cleanup EXIT TERM INT



make_data() {

  file="$1"

  if ! perf record -o "${file}" ${testprog} 2> /dev/null

  then

    echo "Workload record [Failed record]"

    echo 1

    return

  fi

  if ! perf report -i "${file}" -q | grep -q "${testsym}"

  then

    echo "Workload record [Failed missing output]"

    echo 1

    return

  fi

  echo 0

}



test_two_files() {

  echo "Basic two file diff test"

  err=$(make_data "${perfdata1}")

  if [ $err != 0 ]

  then

    return

  fi

  err=$(make_data "${perfdata2}")

  if [ $err != 0 ]

  then

    return

  fi



  if ! perf diff "${perfdata1}" "${perfdata2}" | grep -q "${testsym}"

  then

    echo "Basic two file diff test [Failed diff]"

    err=1

    return

  fi

  echo "Basic two file diff test [Success]"

}



test_three_files() {

  echo "Basic three file diff test"

  err=$(make_data "${perfdata1}")

  if [ $err != 0 ]

  then

    return

  fi

  err=$(make_data "${perfdata2}")

  if [ $err != 0 ]

  then

    return

  fi

  err=$(make_data "${perfdata3}")

  if [ $err != 0 ]

  then

    return

  fi



  if ! perf diff "${perfdata1}" "${perfdata2}" "${perfdata3}" | grep -q "${testsym}"

  then

    echo "Basic three file diff test [Failed diff]"

    err=1

    return

  fi

  echo "Basic three file diff test [Success]"

}



test_two_files

test_three_files



cleanup

exit $err