selftests/bpf: Add uprobe_multi usdt bench test

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Adding test that attaches 50k usdt probes in usdt_multi binary.

After the attach is done we run the binary and make sure we get
proper amount of hits.

With current uprobes:

  # perf stat --null ./test_progs -n 254/6
  #254/6   uprobe_multi_test/bench_usdt:OK
  #254     uprobe_multi_test:OK
  Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED

   Performance counter stats for './test_progs -n 254/6':

      1353.659680562 seconds time elapsed

With uprobe_multi link:

  # perf stat --null ./test_progs -n 254/6
  #254/6   uprobe_multi_test/bench_usdt:OK
  #254     uprobe_multi_test:OK
  Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED

   Performance counter stats for './test_progs -n 254/6':

         0.322046364 seconds time elapsed

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20230809083440.3209381-26-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

...

This commit is contained in:

Jiri Olsa 2023-08-09 10:34:37 +02:00 • committed by Alexei Starovoitov

parent 4cde2d8aa7

commit 85209e839f

2 changed files with 55 additions and 0 deletions

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39

tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c

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16

tools/testing/selftests/bpf/progs/uprobe_multi_usdt.c

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