Commit 1dc86fc7 authored by Leo Yan's avatar Leo Yan Committed by Arnaldo Carvalho de Melo
Browse files

perf test: Introduce script for java symbol testing 



This commit introduces a script for testing java symbols.

The test records java program, inject samples with JIT samples, check
specific JIT symbols in the report, the test will pass only when these
two symbols are detected.

Suggested-by: default avatarIan Rogers <irogers@google.com>
Signed-off-by: default avatarLeo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.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/20220925025835.70364-3-leo.yan@linaro.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 05844393

tools/perf/tests/shell/test_java_symbol.sh

0 → 100755
+75 −0
Original line number Diff line number Diff line 
#!/bin/bash

# Test java symbol



# SPDX-License-Identifier: GPL-2.0

# Leo Yan <leo.yan@linaro.org>, 2022



# skip if there's no jshell

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

	echo "skip: no jshell, install JDK"

	exit 2

fi



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

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



cleanup_files()

{

	echo "Cleaning up files..."

	rm -f ${PERF_DATA}

	rm -f ${PERF_INJ_DATA}

}



trap cleanup_files exit term int



if [ -e "$PWD/tools/perf/libperf-jvmti.so" ]; then

	LIBJVMTI=$PWD/tools/perf/libperf-jvmti.so

elif [ -e "$PWD/libperf-jvmti.so" ]; then

	LIBJVMTI=$PWD/libperf-jvmti.so

elif [ -e "$PREFIX/lib64/libperf-jvmti.so" ]; then

	LIBJVMTI=$PREFIX/lib64/libperf-jvmti.so

elif [ -e "$PREFIX/lib/libperf-jvmti.so" ]; then

	LIBJVMTI=$PREFIX/lib/libperf-jvmti.so

elif [ -e "/usr/lib/linux-tools-$(uname -a | awk '{ print $3 }' | sed -r 's/-generic//')/libperf-jvmti.so" ]; then

	LIBJVMTI=/usr/lib/linux-tools-$(uname -a | awk '{ print $3 }' | sed -r 's/-generic//')/libperf-jvmti.so

else

	echo "Fail to find libperf-jvmti.so"

	# JVMTI is a build option, skip the test if fail to find lib

	exit 2

fi



cat <<EOF | perf record -k 1 -o $PERF_DATA jshell -s -J-agentpath:$LIBJVMTI

int fib(int x) {

	return x > 1 ? fib(x - 2) + fib(x - 1) : 1;

}



int q = 0;



for (int i = 0; i < 10; i++)

	q += fib(i);



System.out.println(q);

EOF



if [ $? -ne 0 ]; then

	echo "Fail to record for java program"

	exit 1

fi



if ! perf inject -i $PERF_DATA -o $PERF_INJ_DATA -j; then

	echo "Fail to inject samples"

	exit 1

fi



# Below is an example of the instruction samples reporting:

#   8.18%  jshell           jitted-50116-29.so    [.] Interpreter

#   0.75%  Thread-1         jitted-83602-1670.so  [.] jdk.internal.jimage.BasicImageReader.getString(int)

perf report --stdio -i ${PERF_INJ_DATA} 2>&1 | \

	egrep " +[0-9]+\.[0-9]+% .* (Interpreter|jdk\.internal).*" > /dev/null 2>&1



if [ $? -ne 0 ]; then

	echo "Fail to find java symbols"

	exit 1

fi



exit 0