From patchwork Tue Mar 8 20:04:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mykola Lysenko X-Patchwork-Id: 12774338 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E520C433EF for ; Tue, 8 Mar 2022 20:05:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350113AbiCHUGg (ORCPT ); Tue, 8 Mar 2022 15:06:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349809AbiCHUGg (ORCPT ); Tue, 8 Mar 2022 15:06:36 -0500 Received: from mx0a-00082601.pphosted.com (mx0a-00082601.pphosted.com [67.231.145.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 976174A3E9 for ; Tue, 8 Mar 2022 12:05:39 -0800 (PST) Received: from pps.filterd (m0109333.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 228IopFf025017 for ; Tue, 8 Mar 2022 12:05:39 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=PozqKVmCONyHBnyS7Bdpuz/RFF2KXoE2Pn4Bv0wNZT4=; b=PdEZWmfAV1W+C8rupHKPV6m7vc3zQJfYhIBiLTFa1ftyVIvbCIknGLdPqT9CwQX7OICt Ht/VQtm6WInNbKmY9S9FHtp0ESHXHU9XYD+WYjKt+3unIKHbvvNksrVZ1YSCu69kpy/l X33HNNJN8COy1LbzGhY0FXwZK2VxOHzBqrQ= Received: from mail.thefacebook.com ([163.114.132.120]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 3enu25y25n-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 08 Mar 2022 12:05:39 -0800 Received: from twshared22811.39.frc1.facebook.com (2620:10d:c085:108::4) by mail.thefacebook.com (2620:10d:c085:11d::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Tue, 8 Mar 2022 12:05:38 -0800 Received: by devvm4897.frc0.facebook.com (Postfix, from userid 537053) id E00D03EBB79B; Tue, 8 Mar 2022 12:05:33 -0800 (PST) From: Mykola Lysenko To: , , , CC: , Mykola Lysenko Subject: [PATCH v4 bpf-next 3/3] Improve stability of find_vma BPF test Date: Tue, 8 Mar 2022 12:04:49 -0800 Message-ID: <20220308200449.1757478-4-mykolal@fb.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220308200449.1757478-1-mykolal@fb.com> References: <20220308200449.1757478-1-mykolal@fb.com> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-GUID: ye1dqFESTi4t3PZBTjwklw3St6ABInk9 X-Proofpoint-ORIG-GUID: ye1dqFESTi4t3PZBTjwklw3St6ABInk9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-03-08_08,2022-03-04_01,2022-02-23_01 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net Remove unneeded spleep and increase length of dummy CPU intensive computation to guarantee test process execution. Also, complete aforemention computation as soon as test success criteria is met Signed-off-by: Mykola Lysenko Acked-by: Yonghong Song --- .../selftests/bpf/prog_tests/find_vma.c | 28 +++++++++++++------ 1 file changed, 19 insertions(+), 9 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/find_vma.c b/tools/testing/selftests/bpf/prog_tests/find_vma.c index 743a094c9510..5165b38f0e59 100644 --- a/tools/testing/selftests/bpf/prog_tests/find_vma.c +++ b/tools/testing/selftests/bpf/prog_tests/find_vma.c @@ -7,12 +7,14 @@ #include "find_vma_fail1.skel.h" #include "find_vma_fail2.skel.h" -static void test_and_reset_skel(struct find_vma *skel, int expected_find_zero_ret) +static void test_and_reset_skel(struct find_vma *skel, int expected_find_zero_ret, bool need_test) { - ASSERT_EQ(skel->bss->found_vm_exec, 1, "found_vm_exec"); - ASSERT_EQ(skel->data->find_addr_ret, 0, "find_addr_ret"); - ASSERT_EQ(skel->data->find_zero_ret, expected_find_zero_ret, "find_zero_ret"); - ASSERT_OK_PTR(strstr(skel->bss->d_iname, "test_progs"), "find_test_progs"); + if (need_test) { + ASSERT_EQ(skel->bss->found_vm_exec, 1, "found_vm_exec"); + ASSERT_EQ(skel->data->find_addr_ret, 0, "find_addr_ret"); + ASSERT_EQ(skel->data->find_zero_ret, expected_find_zero_ret, "find_zero_ret"); + ASSERT_OK_PTR(strstr(skel->bss->d_iname, "test_progs"), "find_test_progs"); + } skel->bss->found_vm_exec = 0; skel->data->find_addr_ret = -1; @@ -36,11 +38,20 @@ static int open_pe(void) return pfd >= 0 ? pfd : -errno; } +static bool find_vma_pe_condition(struct find_vma *skel) +{ + return skel->bss->found_vm_exec == 0 || + skel->data->find_addr_ret != 0 || + skel->data->find_zero_ret == -1 || + strcmp(skel->bss->d_iname, "test_progs") != 0; +} + static void test_find_vma_pe(struct find_vma *skel) { struct bpf_link *link = NULL; volatile int j = 0; int pfd, i; + const int one_bn = 1000000000; pfd = open_pe(); if (pfd < 0) { @@ -57,10 +68,10 @@ static void test_find_vma_pe(struct find_vma *skel) if (!ASSERT_OK_PTR(link, "attach_perf_event")) goto cleanup; - for (i = 0; i < 1000000; ++i) + for (i = 0; i < one_bn && find_vma_pe_condition(skel); ++i) ++j; - test_and_reset_skel(skel, -EBUSY /* in nmi, irq_work is busy */); + test_and_reset_skel(skel, -EBUSY /* in nmi, irq_work is busy */, i == one_bn); cleanup: bpf_link__destroy(link); close(pfd); @@ -75,7 +86,7 @@ static void test_find_vma_kprobe(struct find_vma *skel) return; getpgid(skel->bss->target_pid); - test_and_reset_skel(skel, -ENOENT /* could not find vma for ptr 0 */); + test_and_reset_skel(skel, -ENOENT /* could not find vma for ptr 0 */, true); } static void test_illegal_write_vma(void) @@ -108,7 +119,6 @@ void serial_test_find_vma(void) skel->bss->addr = (__u64)(uintptr_t)test_find_vma_pe; test_find_vma_pe(skel); - usleep(100000); /* allow the irq_work to finish */ test_find_vma_kprobe(skel); find_vma__destroy(skel);