mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-11-07 01:49:42 +01:00
Leo Yan
1dc86fc731
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: Ian Rogers <[email protected]> Signed-off-by: Leo Yan <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
76 lines
1.9 KiB
Bash
Executable File
76 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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# Test java symbol
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# SPDX-License-Identifier: GPL-2.0
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# Leo Yan <[email protected]>, 2022
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# skip if there's no jshell
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if ! [ -x "$(command -v jshell)" ]; then
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echo "skip: no jshell, install JDK"
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exit 2
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fi
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PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
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PERF_INJ_DATA=$(mktemp /tmp/__perf_test.perf.data.inj.XXXXX)
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cleanup_files()
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{
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echo "Cleaning up files..."
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rm -f ${PERF_DATA}
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rm -f ${PERF_INJ_DATA}
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}
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trap cleanup_files exit term int
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if [ -e "$PWD/tools/perf/libperf-jvmti.so" ]; then
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LIBJVMTI=$PWD/tools/perf/libperf-jvmti.so
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elif [ -e "$PWD/libperf-jvmti.so" ]; then
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LIBJVMTI=$PWD/libperf-jvmti.so
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elif [ -e "$PREFIX/lib64/libperf-jvmti.so" ]; then
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LIBJVMTI=$PREFIX/lib64/libperf-jvmti.so
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elif [ -e "$PREFIX/lib/libperf-jvmti.so" ]; then
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LIBJVMTI=$PREFIX/lib/libperf-jvmti.so
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elif [ -e "/usr/lib/linux-tools-$(uname -a | awk '{ print $3 }' | sed -r 's/-generic//')/libperf-jvmti.so" ]; then
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LIBJVMTI=/usr/lib/linux-tools-$(uname -a | awk '{ print $3 }' | sed -r 's/-generic//')/libperf-jvmti.so
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else
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echo "Fail to find libperf-jvmti.so"
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# JVMTI is a build option, skip the test if fail to find lib
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exit 2
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fi
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cat <<EOF | perf record -k 1 -o $PERF_DATA jshell -s -J-agentpath:$LIBJVMTI
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int fib(int x) {
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return x > 1 ? fib(x - 2) + fib(x - 1) : 1;
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}
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int q = 0;
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for (int i = 0; i < 10; i++)
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q += fib(i);
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System.out.println(q);
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EOF
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if [ $? -ne 0 ]; then
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echo "Fail to record for java program"
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exit 1
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fi
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if ! perf inject -i $PERF_DATA -o $PERF_INJ_DATA -j; then
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echo "Fail to inject samples"
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exit 1
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fi
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# Below is an example of the instruction samples reporting:
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# 8.18% jshell jitted-50116-29.so [.] Interpreter
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# 0.75% Thread-1 jitted-83602-1670.so [.] jdk.internal.jimage.BasicImageReader.getString(int)
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perf report --stdio -i ${PERF_INJ_DATA} 2>&1 | \
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egrep " +[0-9]+\.[0-9]+% .* (Interpreter|jdk\.internal).*" > /dev/null 2>&1
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if [ $? -ne 0 ]; then
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echo "Fail to find java symbols"
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exit 1
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fi
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exit 0
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