perf test: Replace data symbol test workload with datasym

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

  $ sudo ./perf test -v 109
  109: Test data symbol                                                :
  --- start ---
  test child forked, pid 844526
  Recording workload...
  [ perf record: Woken up 2 times to write data ]
  [ perf record: Captured and wrote 0.354 MB /tmp/__perf_test.perf.data.GFeZO (4847 samples) ]
  Cleaning up files...
  test child finished with 0
  ---- end ----
  Test data symbol: Ok

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: James 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: Leo Yan <leo.yan@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221116233854.1596378-13-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/tests/shell/test_data_symbol.sh b/tools/perf/tests/shell/test_data_symbol.sh
index cd6eb54..d871e6c 100755 (executable)
--- a/tools/perf/tests/shell/test_data_symbol.sh
+++ b/tools/perf/tests/shell/test_data_symbol.sh
@@ -11,13 +11,7 @@ skip_if_no_mem_event() {
 
 skip_if_no_mem_event || exit 2
 
-# skip if there's no compiler
-if ! [ -x "$(command -v cc)" ]; then
-       echo "skip: no compiler, install gcc"
-       exit 2
-fi
-
-TEST_PROGRAM=$(mktemp /tmp/__perf_test.program.XXXXX)
+TEST_PROGRAM="perf test -w datasym"
 PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
 
 check_result() {
@@ -45,31 +39,10 @@ cleanup_files()
 {
        echo "Cleaning up files..."
        rm -f ${PERF_DATA}
-       rm -f ${TEST_PROGRAM}
 }
 
 trap cleanup_files exit term int
 
-# compile test program
-echo "Compiling test program..."
-cat << EOF | cc -o ${TEST_PROGRAM} -x c -
-typedef struct _buf {
-       char data1;
-       char reserved[55];
-       char data2;
-} buf __attribute__((aligned(64)));
-
-static buf buf1;
-
-int main(void) {
-       for (;;) {
-               buf1.data1++;
-               buf1.data2 += buf1.data1;
-       }
-       return 0;
-}
-EOF
-
 echo "Recording workload..."
 
 # perf mem/c2c internally uses IBS PMU on AMD CPU which doesn't support