selftests/bpf: Add tracing multi attach benchmark test

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Adding benchmark test that attaches to (almost) all allowed tracing
functions and display attach/detach times.

  # ./test_progs -t tracing_multi_bench_attach -v
  bpf_testmod.ko is already unloaded.
  Loading bpf_testmod.ko...
  Successfully loaded bpf_testmod.ko.
  serial_test_tracing_multi_bench_attach:PASS:btf__load_vmlinux_btf 0 nsec
  serial_test_tracing_multi_bench_attach:PASS:tracing_multi_bench__open_and_load 0 nsec
  serial_test_tracing_multi_bench_attach:PASS:get_syms 0 nsec
  serial_test_tracing_multi_bench_attach:PASS:bpf_program__attach_tracing_multi 0 nsec
  serial_test_tracing_multi_bench_attach: found 51186 functions
  serial_test_tracing_multi_bench_attach: attached in   1.295s
  serial_test_tracing_multi_bench_attach: detached in   0.243s
  #507     tracing_multi_bench_attach:OK
  Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED
  Successfully unloaded bpf_testmod.ko.

Exporting skip_entry as is_unsafe_function and using it in the test.

Also updating trace_blacklist with ___migrate_enable to be in sync
with kernel functions deny list.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20260606123955.345967-29-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

...

This commit is contained in:

Jiri Olsa 2026-06-06 14:39:53 +02:00 • committed by Alexei Starovoitov

parent 443c91d08c

commit 4db8f60b6b

4 changed files with 141 additions and 3 deletions

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124

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

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12

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

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7

tools/testing/selftests/bpf/trace_helpers.c

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1

tools/testing/selftests/bpf/trace_helpers.h

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