From patchwork Tue Sep 17 08:50:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Olsa X-Patchwork-Id: 13806019 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 932EF158550; Tue, 17 Sep 2024 08:53:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726563202; cv=none; b=pucX2nVC1wnCorUFR6678W7T5MzqWAd+1AWSaBRhMIfDeL+LYstGtjx6IM0xVp2kOX61ZTuQDQGyNi4Bf5QBKUiHxvu3/Un97QNxD4z9V2tNjKziPCO6p+sIlnYyDDxvBviRhb1z2HsFtxxOvumP/MC9tKiHHOM1y9BeUTWvIXQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726563202; c=relaxed/simple; bh=7A9EdOCx4qTXb70yo06M1I8B1//8v5dhcqxszDj04s4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qKz/yhdkgvkzK6Md0Nr8eAqTQz8l0S4GE345/cFVE/LBpV1di13UPHOtp7hmRFX3arsXF15YMk2m07czZxkwhPTnhdKo9/y93glCPhNS9LO32oaXfDe6lBlRDz+z/OF7om7S30l8SirajEmAbcM2yzavv5AmRv940FNfGbpnOaY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ichzMza1; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ichzMza1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BE37BC4CEC5; Tue, 17 Sep 2024 08:53:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1726563202; bh=7A9EdOCx4qTXb70yo06M1I8B1//8v5dhcqxszDj04s4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ichzMza1gv5xa4YKI8apJxzftQFN1F+c8zALITGUBXsfUh4JTuP9hE0xFY8d+YRuO 5enrQiEzuvbl/lfetN+Vn8Y5IRsz56oSJF0NCu9FAzeuh+C3GkMoAaME7ZoUp+PKnb z7D/JCrySOAB9YQ2cBKi0dA6uWU7iyLKfSQzNQjJ0S9Hn00+qg1KHXtimcfqMaFnzs nW7mMCu4O4TkvFlCdECDEse2XOKp7lpVlqDPHMMgjUvnnC3Qg38pEuQJQKT0a+fafp lHtu0fZ65EU0m2RpQSPo9btMlab14NymHx058wSRvRUrnoTxDuSRlmLSD3tWkmRPmn tUzFw1VZqmEkA== From: Jiri Olsa To: Oleg Nesterov , Peter Zijlstra , 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 , Steven Rostedt , Masami Hiramatsu , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Subject: [PATCHv4 14/14] selftests/bpf: Add consumers stress test on single uprobe Date: Tue, 17 Sep 2024 10:50:24 +0200 Message-ID: <20240917085024.765883-15-jolsa@kernel.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240917085024.765883-1-jolsa@kernel.org> References: <20240917085024.765883-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 We create multiple threads each trying to attach and detach uprobe consumers on the same uprobe, while main thread is hitting on that uprobe. All that for 5 seconds. Signed-off-by: Jiri Olsa --- .../bpf/prog_tests/uprobe_multi_test.c | 82 +++++++++++++++++++ .../bpf/progs/uprobe_multi_consumer_stress.c | 29 +++++++ 2 files changed, 111 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/uprobe_multi_consumer_stress.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 594aa8c06f58..dcc128507212 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c @@ -3,6 +3,7 @@ #include #include #include +#include #include "uprobe_multi.skel.h" #include "uprobe_multi_bench.skel.h" #include "uprobe_multi_usdt.skel.h" @@ -10,6 +11,7 @@ #include "uprobe_multi_session_single.skel.h" #include "uprobe_multi_session_cookie.skel.h" #include "uprobe_multi_session_recursive.skel.h" +#include "uprobe_multi_consumer_stress.skel.h" #include "uprobe_multi_verifier.skel.h" #include "bpf/libbpf_internal.h" #include "testing_helpers.h" @@ -848,6 +850,84 @@ static void test_bench_attach_usdt(void) printf("%s: detached in %7.3lfs\n", __func__, detach_delta); } +static int done; + +static void *worker(void *p) +{ + struct uprobe_multi_consumer_stress *skel = p; + struct bpf_link *link = NULL; + + srand(time(NULL)); + + while (!done) { + LIBBPF_OPTS(bpf_uprobe_multi_opts, opts); + struct bpf_program *prog; + + switch (rand() % 4) { + case 0: + prog = skel->progs.uprobe_session_0; + opts.session = true; + break; + case 1: + prog = skel->progs.uprobe_session_1; + opts.session = true; + break; + case 2: + prog = skel->progs.uprobe; + break; + case 3: + prog = skel->progs.uretprobe; + opts.retprobe = true; + break; + } + + link = bpf_program__attach_uprobe_multi(prog, -1, "/proc/self/exe", + "uprobe_multi_func_1", &opts); + bpf_link__destroy(link); + } + + return NULL; +} + +#define THREAD_COUNT 4 + +static void test_session_consumer_stress(void) +{ + struct uprobe_multi_consumer_stress *skel; + pthread_t threads[THREAD_COUNT]; + time_t start; + int i, err; + + /* + * We create multiple threads each trying to attach and detach uprobe + * consumer on the same uprobe, while main thread is hitting on that + * uprobe. All that for 5 seconds. + */ + skel = uprobe_multi_consumer_stress__open_and_load(); + if (!ASSERT_OK_PTR(skel, "uprobe_multi_consumer_stress")) + goto cleanup; + + for (i = 0; i < THREAD_COUNT; i++) { + err = pthread_create(threads + i, NULL, worker, skel); + if (!ASSERT_OK(err, "pthread_create")) + goto join; + } + + start = time(NULL); + + while (start + 5 > time(NULL)) + uprobe_multi_func_1(); + + done = 1; + +join: + for (i = 0; i < THREAD_COUNT; i++) + pthread_join(threads[i], NULL); + +cleanup: + uprobe_multi_consumer_stress__destroy(skel); +} + void test_uprobe_multi_test(void) { if (test__start_subtest("skel_api")) @@ -872,5 +952,7 @@ void test_uprobe_multi_test(void) test_session_cookie_skel_api(); if (test__start_subtest("session_cookie_recursive")) test_session_recursive_skel_api(); + if (test__start_subtest("consumer_stress")) + test_session_consumer_stress(); RUN_TESTS(uprobe_multi_verifier); } diff --git a/tools/testing/selftests/bpf/progs/uprobe_multi_consumer_stress.c b/tools/testing/selftests/bpf/progs/uprobe_multi_consumer_stress.c new file mode 100644 index 000000000000..5390108a21ff --- /dev/null +++ b/tools/testing/selftests/bpf/progs/uprobe_multi_consumer_stress.c @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include + +char _license[] SEC("license") = "GPL"; + +SEC("uprobe.session") +int uprobe_session_0(struct pt_regs *ctx) +{ + return 0; +} + +SEC("uprobe.session") +int uprobe_session_1(struct pt_regs *ctx) +{ + return 1; +} + +SEC("uprobe.multi") +int uprobe(struct pt_regs *ctx) +{ + return 0; +} + +SEC("uprobe.multi") +int uretprobe(struct pt_regs *ctx) +{ + return 0; +}