From patchwork Tue Nov 14 21:16:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13455967 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 7D5292FC27 for ; Tue, 14 Nov 2023 21:18:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from mail-pl1-f182.google.com (mail-pl1-f182.google.com [209.85.214.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5EF1BFB; Tue, 14 Nov 2023 13:18:44 -0800 (PST) Received: by mail-pl1-f182.google.com with SMTP id d9443c01a7336-1cc34c3420bso47872865ad.3; Tue, 14 Nov 2023 13:18:44 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699996724; x=1700601524; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=u5C8QTqGh/a0Jki+l9qVpbMBnpDJv7ICCSUZf0jmocU=; b=EOB8NZFyVNa6urdrdea1Aibe7UenZylCH3z6bKCdSs6Nzv5PhMVGWhWk4kIZBuzQ4j tsnnzb2ak3Y+8innvquEQGi4mvlCzendDPV6pLWoo/NmqU46CQlpek7esBMwj8vrkf/Q cBuvcKl4QXYUjiLqnM+R1p/hHicTGc5S1KCwwLM4KODdWilIiwwu5xn6mIQCvQnUt+ac 0dEhOIujR8tUrd5DOTgUfKWowm9klhIRoYxiKUS1YhOjjojRLQPTlenSZUCJAh2WEjyu ppmmxKz4Qnz/VHFaGlqpTdQJeiEQkRYr6Msje4FsXru7lGfRM6Zfad8q/9Y0vyYsWklD zUZA== X-Gm-Message-State: AOJu0Yz2Cdf0yV8rwY+/L2wSEQ6MjSUiHd+x2+tv79o/CLl03D/FiBSb hg+hO4LW4sDfHwnFFIer5nMmwZyUIO8= X-Google-Smtp-Source: AGHT+IGuLpK5c0LU1HnWPaHYPG5YSuXxZ0RuTZFXErMNKVuIgISMT1OPYL1QI22cdBlFo57goyPK3w== X-Received: by 2002:a17:902:db03:b0:1cc:32ae:4afd with SMTP id m3-20020a170902db0300b001cc32ae4afdmr4367405plx.46.1699996723778; Tue, 14 Nov 2023 13:18:43 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id ix7-20020a170902f80700b001c71ec1866fsm6169288plb.258.2023.11.14.13.18.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:18:43 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, Jens Axboe , Christoph Hellwig , Bart Van Assche , Damien Le Moal , Ming Lei , "James E.J. Bottomley" Subject: [PATCH v15 09/19] scsi: sd: Add a unit test for sd_cmp_sector() Date: Tue, 14 Nov 2023 13:16:17 -0800 Message-ID: <20231114211804.1449162-10-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114211804.1449162-1-bvanassche@acm.org> References: <20231114211804.1449162-1-bvanassche@acm.org> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Make it easier to test sd_cmp_sector() by adding a unit test for this function. Cc: Martin K. Petersen Cc: Damien Le Moal Cc: Christoph Hellwig Cc: Ming Lei Signed-off-by: Bart Van Assche --- drivers/scsi/Kconfig | 5 +++ drivers/scsi/sd.c | 4 ++ drivers/scsi/sd_test.c | 86 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 95 insertions(+) create mode 100644 drivers/scsi/sd_test.c diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 2e57afdbbc4d..ba2b81ddd7f8 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -237,6 +237,11 @@ config SCSI_ERROR_TEST depends on SCSI && KUNIT default KUNIT_ALL_TESTS +config SD_TEST + tristate "sd.c unit tests" if !KUNIT_ALL_TESTS + depends on SCSI && BLK_DEV_SD && KUNIT + default KUNIT_ALL_TESTS + menu "SCSI Transports" depends on SCSI diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 63bb01ddadde..d52ea605ada8 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -4141,3 +4141,7 @@ void sd_print_result(const struct scsi_disk *sdkp, const char *msg, int result) "%s: Result: hostbyte=0x%02x driverbyte=%s\n", msg, host_byte(result), "DRIVER_OK"); } + +#ifdef CONFIG_SD_TEST +#include "sd_test.c" +#endif diff --git a/drivers/scsi/sd_test.c b/drivers/scsi/sd_test.c new file mode 100644 index 000000000000..b9c3d2bf311e --- /dev/null +++ b/drivers/scsi/sd_test.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2023 Google LLC + */ +#include +#include +#include +#include +#include +#include +#include "sd.h" + +#define ALLOC(type, ...) \ + ({ \ + type *obj; \ + obj = kmalloc(sizeof(*obj), GFP_KERNEL); \ + if (obj) \ + *obj = (type){ __VA_ARGS__ }; \ + obj; \ + }) + +#define ALLOC_Q(...) ALLOC(struct request_queue, __VA_ARGS__) + +#define ALLOC_CMD(...) ALLOC(struct rq_and_cmd, __VA_ARGS__) + +struct rq_and_cmd { + struct request rq; + struct scsi_cmnd cmd; +}; + +/* + * Verify that sd_cmp_sector() does what it is expected to do. + */ +static void test_sd_cmp_sector(struct kunit *test) +{ + struct request_queue *q1 __free(kfree) = + ALLOC_Q(.limits.use_zone_write_lock = true); + struct request_queue *q2 __free(kfree) = + ALLOC_Q(.limits.use_zone_write_lock = false); + struct rq_and_cmd *cmd1 __free(kfree) = ALLOC_CMD(.rq = { + .q = q1, + .__sector = 7, + }); + struct rq_and_cmd *cmd2 __free(kfree) = ALLOC_CMD(.rq = { + .q = q1, + .__sector = 5, + }); + struct rq_and_cmd *cmd3 __free(kfree) = ALLOC_CMD(.rq = { + .q = q2, + .__sector = 7, + }); + struct rq_and_cmd *cmd4 __free(kfree) = ALLOC_CMD(.rq = { + .q = q2, + .__sector = 5, + }); + LIST_HEAD(cmd_list); + + list_add_tail(&cmd1->cmd.eh_entry, &cmd_list); + list_add_tail(&cmd2->cmd.eh_entry, &cmd_list); + list_add_tail(&cmd3->cmd.eh_entry, &cmd_list); + list_add_tail(&cmd4->cmd.eh_entry, &cmd_list); + KUNIT_EXPECT_EQ(test, list_count_nodes(&cmd_list), 4); + list_sort(NULL, &cmd_list, sd_cmp_sector); + KUNIT_EXPECT_EQ(test, list_count_nodes(&cmd_list), 4); + KUNIT_EXPECT_PTR_EQ(test, cmd_list.next, &cmd4->cmd.eh_entry); + KUNIT_EXPECT_PTR_EQ(test, cmd_list.next->next, &cmd3->cmd.eh_entry); + KUNIT_EXPECT_PTR_EQ(test, cmd_list.next->next->next, + &cmd1->cmd.eh_entry); + KUNIT_EXPECT_PTR_EQ(test, cmd_list.next->next->next->next, + &cmd2->cmd.eh_entry); +} + +static struct kunit_case sd_test_cases[] = { + KUNIT_CASE(test_sd_cmp_sector), + {} +}; + +static struct kunit_suite sd_test_suite = { + .name = "sd", + .test_cases = sd_test_cases, +}; +kunit_test_suite(sd_test_suite); + +MODULE_DESCRIPTION("SCSI disk (sd) driver unit tests"); +MODULE_AUTHOR("Bart Van Assche"); +MODULE_LICENSE("GPL");