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perf test: Replace pipe test workload with noploop

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So that it can get rid of requirement of a compiler.
Also define and use more local symbols to ease future changes.

  $ sudo ./perf test -v pipe
   87: perf pipe recording and injection test                          :
  --- start ---
  test child forked, pid 748003
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.000 MB - ]
      748014   748014       -1 |perf
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.000 MB - ]
      99.83%  perf     perf                  [.] noploop
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.000 MB - ]
      99.85%  perf     perf                  [.] noploop
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.160 MB /tmp/perf.data.2XYPdw (4007 samples) ]
      99.83%  perf     perf                  [.] noploop
  test child finished with 0
  ---- end ----
  perf pipe recording and injection test: 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/20221116233854.1596378-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2022-11-16 15:38:44 -08:00 committed by Arnaldo Carvalho de Melo
parent f215054d74
commit 24e733b29f
1 changed files with 10 additions and 45 deletions
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55
tools/perf/tests/shell/pipe_test.sh
View file

@ -2,68 +2,33 @@
# perf pipe recording and injection test
# SPDX-License-Identifier: GPL-2.0
# skip if there's no compiler
if ! [ -x "$(command -v cc)" ]; then
echo "failed: no compiler, install gcc"
exit 2
fi
file=$(mktemp /tmp/test.file.XXXXXX)
data=$(mktemp /tmp/perf.data.XXXXXX)
prog="perf test -w noploop"
task="perf"
sym="noploop"
cat <<EOF | cc -o ${file} -x c -
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
volatile int done;
void sigalrm(int sig) {
done = 1;
}
__attribute__((noinline)) void noploop(void) {
while (!done)
continue;
}
int main(int argc, char *argv[]) {
int sec = 1;
if (argc > 1)
sec = atoi(argv[1]);
signal(SIGALRM, sigalrm);
alarm(sec);
noploop();
return 0;
}
EOF
if ! perf record -e task-clock:u -o - ${file} | perf report -i - --task | grep test.file; then
if ! perf record -e task-clock:u -o - ${prog} | perf report -i - --task | grep ${task}; then
echo "cannot find the test file in the perf report"
exit 1
fi
if ! perf record -e task-clock:u -o - ${file} | perf inject -b | perf report -i - | grep noploop; then
if ! perf record -e task-clock:u -o - ${prog} | perf inject -b | perf report -i - | grep ${sym}; then
echo "cannot find noploop function in pipe #1"
exit 1
fi
perf record -e task-clock:u -o - ${file} | perf inject -b -o ${data}
if ! perf report -i ${data} | grep noploop; then
perf record -e task-clock:u -o - ${prog} | perf inject -b -o ${data}
if ! perf report -i ${data} | grep ${sym}; then
echo "cannot find noploop function in pipe #2"
exit 1
fi
perf record -e task-clock:u -o ${data} ${file}
if ! perf inject -b -i ${data} | perf report -i - | grep noploop; then
perf record -e task-clock:u -o ${data} ${prog}
if ! perf inject -b -i ${data} | perf report -i - | grep ${sym}; then
echo "cannot find noploop function in pipe #3"
exit 1
fi
rm -f ${file} ${data} ${data}.old
rm -f ${data} ${data}.old
exit 0