From patchwork Tue Jan 28 07:19:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brendan Higgins X-Patchwork-Id: 11353723 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1971C1395 for ; Tue, 28 Jan 2020 07:20:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DE1FD2468C for ; Tue, 28 Jan 2020 07:20:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="deUb+Dwp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726239AbgA1HUp (ORCPT ); Tue, 28 Jan 2020 02:20:45 -0500 Received: from mail-pj1-f74.google.com ([209.85.216.74]:50793 "EHLO mail-pj1-f74.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726142AbgA1HUX (ORCPT ); Tue, 28 Jan 2020 02:20:23 -0500 Received: by mail-pj1-f74.google.com with SMTP id z12so887780pju.0 for ; Mon, 27 Jan 2020 23:20:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=x21YpalL5LqlkKKEeVGB+luOjkPbn8cAXCEug2TWCEA=; b=deUb+DwpQVonoSZCKQnNTMlQP1Lzh1009+cKfs6ixetvyNNornOu8L8iM6sZCZ1EC1 bCYKufynjbeJXB6mQT5N+rQ80MPGb6Nq5LxtLqw1EuzUInMPOHZLMLJQ323CsWtY+qRE PduOjLakiWcWsm/JYl4yujyUNYWxhK0XgnSWANlyb1HuHAZgoChlWDq7l5tRx8kO1hZP x/+VkMiuaIhKU7O6AkPyqp1FNycJUgjxozfO017LW7yTyFL7y/BKWCid/0DmbvkwswzZ YPaYbO36+IuwVWKxpgvicBc9UUtmiORlykMio3a9p3WNgoru1bsLQuNnqQw72KkQ0tZ+ pqFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=x21YpalL5LqlkKKEeVGB+luOjkPbn8cAXCEug2TWCEA=; b=jvqw/dVIgKz9aOWBFaLJq238ySjqUruIgXCI9cyBOVqyk01NWCmTXgQmlxO3o3lIre XgTug13IAhfZ6UgquumDOX9nyOhZBwR3OFwjNIMbTvE30kDig6YRmpptjKgsmaVFm2aP 6/DOMnrpBcGoVyHGwFiFtHGP5yONQHbQXV9RKxwykGJcbx5f+O8syjDqdJcSZCIiCnsg OyVZE2v9PrzgDHQoV/ajx51HRffIFtLzp5cGPh307V5IrBJ3tU7gi/7TiaGAnu4Yov8y jfMGl4+pBFWdet4ppSXpilVFtFwu9LsiLQHpac2TIkDl/v2KYSglrin+A1wvoim/YyMV i5mA== X-Gm-Message-State: APjAAAUUxhjemH0eioiWoQ/JzMWWcr0g0e6NyoqDkFvyZLsEm7zwftJs Yd5Li5Vawwa06Q6t+bCD+799taH0GkWISRRRNPLibg== X-Google-Smtp-Source: APXvYqyvri48GJhohjVjB6m2tpDcRRU9UPGKXCS7KBHLle1mVLavQCKm9xsShmoyxHcy6AoDRroUfoljdTGdalDX7CBaZQ== X-Received: by 2002:a65:5608:: with SMTP id l8mr24168134pgs.210.1580196022999; Mon, 27 Jan 2020 23:20:22 -0800 (PST) Date: Mon, 27 Jan 2020 23:19:58 -0800 In-Reply-To: <20200128072002.79250-1-brendanhiggins@google.com> Message-Id: <20200128072002.79250-4-brendanhiggins@google.com> Mime-Version: 1.0 References: <20200128072002.79250-1-brendanhiggins@google.com> X-Mailer: git-send-email 2.25.0.341.g760bfbb309-goog Subject: [PATCH v1 3/7] kunit: test: create a single centralized executor for all tests From: Brendan Higgins To: jdike@addtoit.com, richard@nod.at, anton.ivanov@cambridgegreys.com, arnd@arndb.de, keescook@chromium.org, skhan@linuxfoundation.org, alan.maguire@oracle.com, yzaikin@google.com, davidgow@google.com, akpm@linux-foundation.org, rppt@linux.ibm.com, frowand.list@gmail.com Cc: gregkh@linuxfoundation.org, sboyd@kernel.org, logang@deltatee.com, mcgrof@kernel.org, knut.omang@oracle.com, linux-um@lists.infradead.org, linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Brendan Higgins Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Alan Maguire Add a centralized executor to dispatch tests rather than relying on late_initcall to schedule each test suite separately. Centralized execution is for built-in tests only; modules will execute tests when loaded. Signed-off-by: Alan Maguire Co-developed-by: Iurii Zaikin Signed-off-by: Iurii Zaikin Co-developed-by: Brendan Higgins Signed-off-by: Brendan Higgins Reviewed-by: Stephen Boyd --- include/kunit/test.h | 73 +++++++++++++++++++++++++++----------------- lib/kunit/Makefile | 3 +- lib/kunit/executor.c | 36 ++++++++++++++++++++++ 3 files changed, 83 insertions(+), 29 deletions(-) create mode 100644 lib/kunit/executor.c diff --git a/include/kunit/test.h b/include/kunit/test.h index 2dfb550c6723a..8a02f93a6b505 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -197,46 +197,63 @@ void kunit_init_test(struct kunit *test, const char *name); int kunit_run_tests(struct kunit_suite *suite); -/** - * kunit_test_suites() - used to register one or more &struct kunit_suite - * with KUnit. - * - * @suites: a statically allocated list of &struct kunit_suite. - * - * Registers @suites with the test framework. See &struct kunit_suite for - * more information. - * - * When builtin, KUnit tests are all run as late_initcalls; this means - * that they cannot test anything where tests must run at a different init - * phase. One significant restriction resulting from this is that KUnit - * cannot reliably test anything that is initialize in the late_init phase; - * another is that KUnit is useless to test things that need to be run in - * an earlier init phase. - * - * An alternative is to build the tests as a module. Because modules - * do not support multiple late_initcall()s, we need to initialize an - * array of suites for a module. - * - * TODO(brendanhiggins@google.com): Don't run all KUnit tests as - * late_initcalls. I have some future work planned to dispatch all KUnit - * tests from the same place, and at the very least to do so after - * everything else is definitely initialized. +/* + * If a test suite is built-in, module_init() gets translated into + * an initcall which we don't want as the idea is that for builtins + * the executor will manage execution. So ensure we do not define + * module_{init|exit} functions for the builtin case when registering + * suites via kunit_test_suites() below. */ -#define kunit_test_suites(...) \ - static struct kunit_suite *suites[] = { __VA_ARGS__, NULL}; \ - static int kunit_test_suites_init(void) \ +#ifdef MODULE +#define kunit_test_suites_for_module(__suites) \ + static int __init kunit_test_suites_init(void) \ { \ + struct kunit_suite *suites[] = (__suites); \ unsigned int i; \ + \ for (i = 0; suites[i] != NULL; i++) \ kunit_run_tests(suites[i]); \ return 0; \ } \ - late_initcall(kunit_test_suites_init); \ + module_init(kunit_test_suites_init); \ + \ static void __exit kunit_test_suites_exit(void) \ { \ return; \ } \ module_exit(kunit_test_suites_exit) +#else +#define kunit_test_suites_for_module(__suites) +#endif /* MODULE */ + +#define __kunit_test_suites(unique_array, unique_suites, ...) \ + static struct kunit_suite *unique_array[] = { __VA_ARGS__, NULL }; \ + kunit_test_suites_for_module(unique_array); \ + static struct kunit_suite **unique_suites \ + __used __aligned(8) __section(.kunit_test_suites) = unique_array + +/** + * kunit_test_suites() - used to register one or more &struct kunit_suite + * with KUnit. + * + * @suites: a statically allocated list of &struct kunit_suite. + * + * Registers @suites with the test framework. See &struct kunit_suite for + * more information. + * + * When builtin, KUnit tests are all run via executor; this is done + * by placing the array of struct kunit_suite * in the .kunit_test_suites + * ELF section. + * + * An alternative is to build the tests as a module. Because modules do not + * support multiple initcall()s, we need to initialize an array of suites for a + * module. + * + */ +#define kunit_test_suites(...) \ + __kunit_test_suites(__UNIQUE_ID(array), \ + __UNIQUE_ID(suites), \ + __VA_ARGS__) #define kunit_test_suite(suite) kunit_test_suites(&suite) diff --git a/lib/kunit/Makefile b/lib/kunit/Makefile index fab55649b69a5..c282f02ca066b 100644 --- a/lib/kunit/Makefile +++ b/lib/kunit/Makefile @@ -3,7 +3,8 @@ obj-$(CONFIG_KUNIT) += kunit.o kunit-objs += test.o \ string-stream.o \ assert.o \ - try-catch.o + try-catch.o \ + executor.o obj-$(CONFIG_KUNIT_TEST) += kunit-test.o diff --git a/lib/kunit/executor.c b/lib/kunit/executor.c new file mode 100644 index 0000000000000..6429927d598a5 --- /dev/null +++ b/lib/kunit/executor.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include + +/* + * These symbols point to the .kunit_test_suites section and are defined in + * include/asm-generic/vmlinux.lds.h, and consequently must be extern. + */ +extern struct kunit_suite * const * const __kunit_suites_start[]; +extern struct kunit_suite * const * const __kunit_suites_end[]; + +#if IS_BUILTIN(CONFIG_KUNIT) + +static int kunit_run_all_tests(void) +{ + struct kunit_suite * const * const *suites, * const *subsuite; + bool has_test_failed = false; + + for (suites = __kunit_suites_start; + suites < __kunit_suites_end; + suites++) { + for (subsuite = *suites; *subsuite != NULL; subsuite++) { + if (kunit_run_tests(*subsuite)) + has_test_failed = true; + } + } + + if (has_test_failed) + return -EFAULT; + + return 0; +} + +late_initcall(kunit_run_all_tests); + +#endif /* IS_BUILTIN(CONFIG_KUNIT) */