From mboxrd@z Thu Jan 1 00:00:00 1970 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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=no 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 40A8FC2D0BE for ; Thu, 5 Dec 2019 00:51:04 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E4290224F8 for ; Thu, 5 Dec 2019 00:51:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="iCw9GNZV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E4290224F8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 922456B0D95; Wed, 4 Dec 2019 19:51:03 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 8D2B46B0D98; Wed, 4 Dec 2019 19:51:03 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7EB7C6B0D99; Wed, 4 Dec 2019 19:51:03 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0006.hostedemail.com [216.40.44.6]) by kanga.kvack.org (Postfix) with ESMTP id 67B766B0D95 for ; Wed, 4 Dec 2019 19:51:03 -0500 (EST) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id 2763480F13C1 for ; Thu, 5 Dec 2019 00:51:03 +0000 (UTC) X-FDA: 76229258406.25.egg32_9232ae555b3b X-HE-Tag: egg32_9232ae555b3b X-Filterd-Recvd-Size: 6041 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf37.hostedemail.com (Postfix) with ESMTP for ; Thu, 5 Dec 2019 00:51:02 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8637B21744; Thu, 5 Dec 2019 00:51:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575507062; bh=W9PWl8TGlWb0RUDlqNIPcGgEL7vW0GfQepe3n0Wb0ZA=; h=Date:From:To:Subject:In-Reply-To:From; b=iCw9GNZV/WmQFwt+3Dd3z0nKPz5RJH15ntjpeLssgw7obAwh7+1aP2o4YULA3qsGG z/I/hpfTznGad5EofPajwkz7IjlqcHGJz7xLMF+aEbRhMZcPA67D47Ya2zvQPYweMC fX1y0voQ0M6zb2FV49GEsBVXPDrEMxrdkVEghxbE= Date: Wed, 04 Dec 2019 16:51:01 -0800 From: Andrew Morton To: akpm@linux-foundation.org, andriy.shevchenko@linux.intel.com, andy.shevchenko@gmail.com, arnd@arndb.de, bgolaszewski@baylibre.com, geert+renesas@glider.be, geert@linux-m68k.org, linus.walleij@linaro.org, linux-mm@kvack.org, linux@rasmusvillemoes.dk, lukas@wunner.de, m.duckeck@kunbus.de, mm-commits@vger.kernel.org, morten.tiljeset@prevas.dk, preid@electromag.com.au, sean.nyekjaer@prevas.dk, torvalds@linux-foundation.org, vilhelm.gray@gmail.com, yamada.masahiro@socionext.com Subject: [patch 25/86] lib/test_bitmap.c: add for_each_set_clump8 test cases Message-ID: <20191205005101._RH8Qpepc%akpm@linux-foundation.org> In-Reply-To: <20191204164858.fe4ed8886e34ad9f3b34ea00@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: William Breathitt Gray Subject: lib/test_bitmap.c: add for_each_set_clump8 test cases The introduction of the for_each_set_clump8 macro warrants test cases to verify the implementation. This patch adds test case checks for whether an out-of-bounds clump index is returned, a zero clump is returned, or the returned clump value differs from the expected clump value. Link: http://lkml.kernel.org/r/febc0fb8151e3e3fdd61c34da9193d1c4d7e6c12.1570641097.git.vilhelm.gray@gmail.com Signed-off-by: William Breathitt Gray Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij Tested-by: Andy Shevchenko Cc: Rasmus Villemoes Cc: Arnd Bergmann Cc: Bartosz Golaszewski Cc: Geert Uytterhoeven Cc: Geert Uytterhoeven Cc: Lukas Wunner Cc: Masahiro Yamada Cc: Mathias Duckeck Cc: Morten Hein Tiljeset Cc: Phil Reid Cc: Sean Nyekjaer Signed-off-by: Andrew Morton --- lib/test_bitmap.c | 65 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) --- a/lib/test_bitmap.c~lib-test_bitmapc-add-for_each_set_clump8-test-cases +++ a/lib/test_bitmap.c @@ -92,6 +92,36 @@ __check_eq_u32_array(const char *srcfile return true; } +static bool __init __check_eq_clump8(const char *srcfile, unsigned int line, + const unsigned int offset, + const unsigned int size, + const unsigned char *const clump_exp, + const unsigned long *const clump) +{ + unsigned long exp; + + if (offset >= size) { + pr_warn("[%s:%u] bit offset for clump out-of-bounds: expected less than %u, got %u\n", + srcfile, line, size, offset); + return false; + } + + exp = clump_exp[offset / 8]; + if (!exp) { + pr_warn("[%s:%u] bit offset for zero clump: expected nonzero clump, got bit offset %u with clump value 0", + srcfile, line, offset); + return false; + } + + if (*clump != exp) { + pr_warn("[%s:%u] expected clump value of 0x%lX, got clump value of 0x%lX", + srcfile, line, exp, *clump); + return false; + } + + return true; +} + #define __expect_eq(suffix, ...) \ ({ \ int result = 0; \ @@ -108,6 +138,7 @@ __check_eq_u32_array(const char *srcfile #define expect_eq_bitmap(...) __expect_eq(bitmap, ##__VA_ARGS__) #define expect_eq_pbl(...) __expect_eq(pbl, ##__VA_ARGS__) #define expect_eq_u32_array(...) __expect_eq(u32_array, ##__VA_ARGS__) +#define expect_eq_clump8(...) __expect_eq(clump8, ##__VA_ARGS__) static void __init test_zero_clear(void) { @@ -404,6 +435,39 @@ static void noinline __init test_mem_opt } } +static const unsigned char clump_exp[] __initconst = { + 0x01, /* 1 bit set */ + 0x02, /* non-edge 1 bit set */ + 0x00, /* zero bits set */ + 0x38, /* 3 bits set across 4-bit boundary */ + 0x38, /* Repeated clump */ + 0x0F, /* 4 bits set */ + 0xFF, /* all bits set */ + 0x05, /* non-adjacent 2 bits set */ +}; + +static void __init test_for_each_set_clump8(void) +{ +#define CLUMP_EXP_NUMBITS 64 + DECLARE_BITMAP(bits, CLUMP_EXP_NUMBITS); + unsigned int start; + unsigned long clump; + + /* set bitmap to test case */ + bitmap_zero(bits, CLUMP_EXP_NUMBITS); + bitmap_set(bits, 0, 1); /* 0x01 */ + bitmap_set(bits, 9, 1); /* 0x02 */ + bitmap_set(bits, 27, 3); /* 0x28 */ + bitmap_set(bits, 35, 3); /* 0x28 */ + bitmap_set(bits, 40, 4); /* 0x0F */ + bitmap_set(bits, 48, 8); /* 0xFF */ + bitmap_set(bits, 56, 1); /* 0x05 - part 1 */ + bitmap_set(bits, 58, 1); /* 0x05 - part 2 */ + + for_each_set_clump8(start, clump, bits, CLUMP_EXP_NUMBITS) + expect_eq_clump8(start, CLUMP_EXP_NUMBITS, clump_exp, &clump); +} + static void __init selftest(void) { test_zero_clear(); @@ -413,6 +477,7 @@ static void __init selftest(void) test_bitmap_parselist(); test_bitmap_parselist_user(); test_mem_optimisations(); + test_for_each_set_clump8(); } KSTM_MODULE_LOADERS(test_bitmap); _