Commit 7cf0b4a7 authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
Browse files

perf test: Replace arm callgraph fp test workload with leafloop 



So that it can get rid of requirement of a compiler.

Reviewed-by: default avatarLeo Yan <leo.yan@linaro.org>
Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Tested-by: default avatarJames Clark <james.clark@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221116233854.1596378-7-namhyung@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 41522f74

tools/perf/tests/shell/test_arm_callgraph_fp.sh

+3 −31
Original line number Diff line number Diff line
@@ -4,44 +4,16 @@ 


lscpu | grep -q "aarch64" || exit 2



if ! [ -x "$(command -v cc)" ]; then

	echo "failed: no compiler, install gcc"

	exit 2

fi



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

TEST_PROGRAM_SOURCE=$(mktemp /tmp/test_program.XXXXX.c)

TEST_PROGRAM=$(mktemp /tmp/test_program.XXXXX)

TEST_PROGRAM="perf test -w leafloop"



cleanup_files()

{

	rm -f $PERF_DATA

	rm -f $TEST_PROGRAM_SOURCE

	rm -f $TEST_PROGRAM

}



trap cleanup_files exit term int



cat << EOF > $TEST_PROGRAM_SOURCE

int a = 0;

void leaf(void) {

  for (;;)

    a += a;

}

void parent(void) {

  leaf();

}

int main(void) {

  parent();

  return 0;

}

EOF



echo " + Compiling test program ($TEST_PROGRAM)..."



CFLAGS="-g -O0 -fno-inline -fno-omit-frame-pointer"

cc $CFLAGS $TEST_PROGRAM_SOURCE -o $TEST_PROGRAM || exit 1



# Add a 1 second delay to skip samples that are not in the leaf() function

perf record -o $PERF_DATA --call-graph fp -e cycles//u -D 1000 --user-callchains -- $TEST_PROGRAM 2> /dev/null &

PID=$!
@@ -58,11 +30,11 @@ wait $PID 
# program

# 	728 leaf

# 	753 parent

# 	76c main

# 	76c leafloop

# ...



perf script -i $PERF_DATA -F comm,ip,sym | head -n4

perf script -i $PERF_DATA -F comm,ip,sym | head -n4 | \

	awk '{ if ($2 != "") sym[i++] = $2 } END { if (sym[0] != "leaf" ||

						       sym[1] != "parent" ||

						       sym[2] != "main") exit 1 }'
 
						       sym[2] != "leafloop") exit 1 }'