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4db8f60b6b
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>
13 lines
212 B
C
13 lines
212 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <vmlinux.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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char _license[] SEC("license") = "GPL";
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SEC("fentry.multi")
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int BPF_PROG(bench)
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{
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return 0;
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}
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