Commit 5ceedc09 authored by Ian Rogers's avatar Ian Rogers Committed by Namhyung Kim
Browse files

perf test: Add basic callgraph test to record testing 



Give some basic perf record callgraph coverage.

Signed-off-by: default avatarIan Rogers <irogers@google.com>
Reviewed-by: default avatarJames Clark <james.clark@linaro.org>
Tested-by: default avatarThomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20250628015553.1270748-1-irogers@google.com


Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
parent bb986e47

tools/perf/tests/shell/record.sh

+30 −0
Original line number Diff line number Diff line
@@ -12,8 +12,10 @@ shelldir=$(dirname "$0") 
. "${shelldir}"/lib/perf_has_symbol.sh



testsym="test_loop"

testsym2="brstack"



skip_test_missing_symbol ${testsym}

skip_test_missing_symbol ${testsym2}



err=0

perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
@@ -359,6 +361,33 @@ test_precise_max() { 
  fi

}



test_callgraph() {

  echo "Callgraph test"



  case $(uname -m)

  in s390x)

       cmd_flags="--call-graph dwarf -e cpu-clock";;

     *)

       cmd_flags="-g";;

  esac



  if ! perf record -o "${perfdata}" $cmd_flags perf test -w brstack

  then

    echo "Callgraph test [Failed missing output]"

    err=1

    return

  fi



  if ! perf report -i "${perfdata}" 2>&1 | grep "${testsym2}"

  then

    echo "Callgraph test [Failed missing symbol]"

    err=1

    return

  fi



  echo "Callgraph test [Success]"

}



# raise the limit of file descriptors to minimum

if [[ $default_fd_limit -lt $min_fd_limit ]]; then

       ulimit -Sn $min_fd_limit
@@ -374,6 +403,7 @@ test_uid 
test_leader_sampling

test_topdown_leader_sampling

test_precise_max

test_callgraph



# restore the default value

ulimit -Sn $default_fd_limit