From patchwork Thu Feb 25 02:14:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Axel Rasmussen X-Patchwork-Id: 387456 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9448BC433DB for ; Thu, 25 Feb 2021 02:17:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 55C6164EC8 for ; Thu, 25 Feb 2021 02:17:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236844AbhBYCQ6 (ORCPT ); Wed, 24 Feb 2021 21:16:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37906 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236834AbhBYCQn (ORCPT ); Wed, 24 Feb 2021 21:16:43 -0500 Received: from mail-qv1-xf49.google.com (mail-qv1-xf49.google.com [IPv6:2607:f8b0:4864:20::f49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D7F7C06121D for ; Wed, 24 Feb 2021 18:14:51 -0800 (PST) Received: by mail-qv1-xf49.google.com with SMTP id d15so3038553qvn.16 for ; Wed, 24 Feb 2021 18:14:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=lQ7mB70IC4ojvTJeDVa366V82dbz54zsKMBfnZVy7Ms=; b=lFJ9b0YcGKvqVJcJEUWuytLaGKckdM7KmGvm907xlugk9wxeiWjXhPwfymQVBxp9Q2 IstnBZ8+wjO+/QcGj1MgU+rwbm/UiybZgKvq2fglhsfXqANGr3ud+VEau8tVuHe7Zwq0 EOsAWX7/nPq9KEfZpIga28EXZplEa6KRx3g8oLhVyKHm43f/W6MSgPYdJTGREFCUq9Yk L5dgUKAtfUBQ/hnIfNzSPMRRDfmbVO1hBAZlwAZUFV04WBoUr9vtDP9OMlrp9rrLK11H YD7EYLvmCaGZLJ2TPMNI82UfqLI879FX+YDnAJqPFrpxTtbYACU08rJtMWHFZHY/P+nE r0oA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=lQ7mB70IC4ojvTJeDVa366V82dbz54zsKMBfnZVy7Ms=; b=RYiNPjPp9w5g82/Hj9jKyCZifWfY6lKoGCjUtxLaz0LC2zysUb/LMVaissLlfWavMn dsDpQ9M1BhuuGSITqM6Yz/MqdWigZIQZ3yUuAkp70GuhXAQ1HFCpWAirVSwRt5RZ47zf MXoTB7PSxdB+vyoPvHnHeH261yslEfxE0kNKABvkmD4qWfVUXL5SSaGtnTgLsqxSb9Cx TXHWZd11C4zhrZ6hUG4p0vNVDO5litWZ0o2OuqwOVMeUfrfd9zVPtyeCBBGG+e0bKlDF 4ZQghUxV21H17pq0rKjdJYz5d1A5DGLu7tP7ncpHwtk22zBM0+TTzQ/sbQWIw6GdU6N7 f3/A== X-Gm-Message-State: AOAM531Rlkb4la3hM5UDbAvB94RQkZU2OYqwf1tBFq56nIkvq1Mzby0C +h6dHRa5DIlOzdfjQ6j8IAZTplkJ405Ywz+z9XXa X-Google-Smtp-Source: ABdhPJzSrYbVzMfooR0D4GJVwJWAmLVAkLv5BsZNvFUpe/9PmHmsazV5LOf8VJL8bA6bcXTyCbI+qACA2cxNuhvbX7Xd Sender: "axelrasmussen via sendgmr" X-Received: from ajr0.svl.corp.google.com ([2620:15c:2cd:203:a5fd:f848:2fdf:4651]) (user=axelrasmussen job=sendgmr) by 2002:ad4:5609:: with SMTP id ca9mr615259qvb.58.1614219290463; Wed, 24 Feb 2021 18:14:50 -0800 (PST) Date: Wed, 24 Feb 2021 18:14:20 -0800 In-Reply-To: <20210225021420.2290912-1-axelrasmussen@google.com> Message-Id: <20210225021420.2290912-6-axelrasmussen@google.com> Mime-Version: 1.0 References: <20210225021420.2290912-1-axelrasmussen@google.com> X-Mailer: git-send-email 2.30.0.617.g56c4b15f3c-goog Subject: [PATCH 5/5] userfaultfd/selftests: exercise minor fault handling shmem support From: Axel Rasmussen To: Alexander Viro , Andrea Arcangeli , Andrew Morton , Hugh Dickins , Jerome Glisse , Joe Perches , Lokesh Gidra , Mike Rapoport , Peter Xu , Shaohua Li , Shuah Khan , Wang Qing Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, Axel Rasmussen , Cannon Matthews , "Dr . David Alan Gilbert" , David Rientjes , Michel Lespinasse , Mina Almasry , Oliver Upton Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Enable test_uffdio_minor for test_type == TEST_SHMEM, and modify the test slightly to pass in / check for the right feature flags. Signed-off-by: Axel Rasmussen --- tools/testing/selftests/vm/userfaultfd.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c index 5183ddb3080d..f31e9a4edc55 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -1410,7 +1410,7 @@ static int userfaultfd_minor_test(void) void *expected_page; char c; struct uffd_stats stats = { 0 }; - uint64_t features = UFFD_FEATURE_MINOR_HUGETLBFS; + uint64_t req_features, features_out; if (!test_uffdio_minor) return 0; @@ -1418,10 +1418,18 @@ static int userfaultfd_minor_test(void) printf("testing minor faults: "); fflush(stdout); - if (uffd_test_ctx_clear() || uffd_test_ctx_init_ext(&features)) + if (test_type == TEST_HUGETLB) + req_features = UFFD_FEATURE_MINOR_HUGETLBFS; + else if (test_type == TEST_SHMEM) + req_features = UFFD_FEATURE_MINOR_SHMEM; + else + return 1; + + features_out = req_features; + if (uffd_test_ctx_clear() || uffd_test_ctx_init_ext(&features_out)) return 1; - /* If kernel reports the feature isn't supported, skip the test. */ - if (!(features & UFFD_FEATURE_MINOR_HUGETLBFS)) { + /* If kernel reports required features aren't supported, skip test. */ + if ((features_out & req_features) != req_features) { printf("skipping test due to lack of feature support\n"); fflush(stdout); return 0; @@ -1431,7 +1439,7 @@ static int userfaultfd_minor_test(void) uffdio_register.range.len = nr_pages * page_size; uffdio_register.mode = UFFDIO_REGISTER_MODE_MINOR; if (ioctl(uffd, UFFDIO_REGISTER, &uffdio_register)) { - fprintf(stderr, "register failure\n"); + perror("register failure"); exit(1); } @@ -1695,6 +1703,7 @@ static void set_test_type(const char *type) map_shared = true; test_type = TEST_SHMEM; uffd_test_ops = &shmem_uffd_test_ops; + test_uffdio_minor = true; } else { fprintf(stderr, "Unknown test type: %s\n", type); exit(1); }