From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 876B84400 for ; Tue, 20 Jun 2023 08:39:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D4839C433C8; Tue, 20 Jun 2023 08:39:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1687250359; bh=BfNxy5P13iMbE7Fn3YYIfXUnUos/78zl3tKv+nobwYM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Gmla9RqpTj236Js133DeDX4/3Eblw6mp9Gt6NNBGJWp01/Mn/DRCG4Q+TEHpHL9Xj aJ4IgtCciK110o4RVb4kZ70nBI2U132NMSKee7dav/AyjYnmxFjOjSj4S+HQKzG6so zFzyM8maqazfWw55k39N90GsYn8vLlP+9Hsl9Wv3VoFoQPMcaANaEE/YdSZKdoIsOC PC7vjrkUM9z/pcuoq5pYkIddNUAHYpAirejW0hgWrjdwJCjXT5yC+SOjaV+fzWZMZ5 PEdJto+u5Cz5dCSLEEMzS6mHSSujHRft9nsh+v0sN6v561VuaA7Hkfpx4GH7c5LJaa +UC2UDMmWfVSQ== From: Jiri Olsa To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: bpf@vger.kernel.org, Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo Subject: [PATCHv2 bpf-next 21/24] selftests/bpf: Add usdt_multi bench test Date: Tue, 20 Jun 2023 10:35:47 +0200 Message-ID: <20230620083550.690426-22-jolsa@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230620083550.690426-1-jolsa@kernel.org> References: <20230620083550.690426-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 --- .../bpf/prog_tests/uprobe_multi_test.c | 50 +++++++++++++++++++ .../selftests/bpf/progs/uprobe_multi_usdt.c | 16 ++++++ 2 files changed, 66 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/uprobe_multi_usdt.c diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c index 9a34c754f1ad..a9d5a1773407 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c @@ -4,6 +4,7 @@ #include #include "uprobe_multi.skel.h" #include "bpf/libbpf_internal.h" +#include "uprobe_multi_usdt.skel.h" static char test_data[] = "test_data"; @@ -256,6 +257,53 @@ static void test_bench_attach_uprobe(void) printf("%s: detached in %7.3lfs\n", __func__, detach_delta); } +static void test_bench_attach_usdt(void) +{ + struct uprobe_multi_usdt *skel = NULL; + long attach_start_ns, attach_end_ns; + long detach_start_ns, detach_end_ns; + double attach_delta, detach_delta; + struct bpf_program *prog; + int err; + + skel = uprobe_multi_usdt__open(); + if (!ASSERT_OK_PTR(skel, "uprobe_multi__open")) + goto cleanup; + + bpf_object__for_each_program(prog, skel->obj) + bpf_program__set_autoload(prog, false); + + bpf_program__set_autoload(skel->progs.usdt0, true); + + err = uprobe_multi_usdt__load(skel); + if (!ASSERT_EQ(err, 0, "uprobe_multi_usdt__load")) + goto cleanup; + + attach_start_ns = get_time_ns(); + + skel->links.usdt0 = bpf_program__attach_usdt(skel->progs.usdt0, -1, "./usdt_multi", + "test", "usdt", NULL); + if (!ASSERT_OK_PTR(skel->links.usdt0, "bpf_program__attach_usdt")) + goto cleanup; + + attach_end_ns = get_time_ns(); + + system("./usdt_multi"); + + ASSERT_EQ(skel->bss->count, 50000, "usdt_count"); + +cleanup: + detach_start_ns = get_time_ns(); + uprobe_multi_usdt__destroy(skel); + detach_end_ns = get_time_ns(); + + attach_delta = (attach_end_ns - attach_start_ns) / 1000000000.0; + detach_delta = (detach_end_ns - detach_start_ns) / 1000000000.0; + + printf("%s: attached in %7.3lfs\n", __func__, attach_delta); + printf("%s: detached in %7.3lfs\n", __func__, detach_delta); +} + void test_uprobe_multi_test(void) { if (test__start_subtest("skel_api")) @@ -268,4 +316,6 @@ void test_uprobe_multi_test(void) test_link_api(); if (test__start_subtest("bench_uprobe")) test_bench_attach_uprobe(); + if (test__start_subtest("bench_usdt")) + test_bench_attach_usdt(); } diff --git a/tools/testing/selftests/bpf/progs/uprobe_multi_usdt.c b/tools/testing/selftests/bpf/progs/uprobe_multi_usdt.c new file mode 100644 index 000000000000..9e1c33d0bd2f --- /dev/null +++ b/tools/testing/selftests/bpf/progs/uprobe_multi_usdt.c @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include "vmlinux.h" +#include +#include + +char _license[] SEC("license") = "GPL"; + +int count; + +SEC("usdt") +int usdt0(struct pt_regs *ctx) +{ + count++; + return 0; +} -- 2.41.0