linux-kernel - [PATCH 06/12] perf test: Replace arm callgraph fp test workload with leafloop

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Message-Id: <20221109174635.859406-7-namhyung@kernel.org>
Date:   Wed,  9 Nov 2022 09:46:29 -0800
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-perf-users@...r.kernel.org, Leo Yan <leo.yan@...aro.org>,
        German Gomez <german.gomez@....com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        James Clark <james.clark@....com>
Subject: [PATCH 06/12] perf test: Replace arm callgraph fp test workload with leafloop

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

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 .../perf/tests/shell/test_arm_callgraph_fp.sh | 30 +------------------
 1 file changed, 1 insertion(+), 29 deletions(-)

diff --git a/tools/perf/tests/shell/test_arm_callgraph_fp.sh b/tools/perf/tests/shell/test_arm_callgraph_fp.sh
index ec108d45d3c6..9d6d1b2d99c5 100755
--- a/tools/perf/tests/shell/test_arm_callgraph_fp.sh
+++ b/tools/perf/tests/shell/test_arm_callgraph_fp.sh
@@ -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 -- $TEST_PROGRAM 2> /dev/null &
 PID=$!
-- 
2.38.1.431.g37b22c650d-goog