From patchwork Tue Mar 28 16:15:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Jacques Hiblot X-Patchwork-Id: 668456 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 2DA3AC6FD18 for ; Tue, 28 Mar 2023 16:35:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230296AbjC1QfW (ORCPT ); Tue, 28 Mar 2023 12:35:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46030 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229532AbjC1QfW (ORCPT ); Tue, 28 Mar 2023 12:35:22 -0400 X-Greylist: delayed 3818 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Tue, 28 Mar 2023 09:35:18 PDT Received: from 2.mo563.mail-out.ovh.net (2.mo563.mail-out.ovh.net [46.105.33.33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38029CDE5 for ; Tue, 28 Mar 2023 09:35:17 -0700 (PDT) Received: from director3.derp.mail-out.ovh.net (director3.derp.mail-out.ovh.net [152.228.215.222]) by mo563.mail-out.ovh.net (Postfix) with ESMTPS id E872A22BCC; Tue, 28 Mar 2023 16:15:54 +0000 (UTC) Received: from director3.derp.mail-out.ovh.net (director3.derp.mail-out.ovh.net. [127.0.0.1]) by director3.derp.mail-out.ovh.net (inspect_sender_mail_agent) with SMTP for ; Tue, 28 Mar 2023 16:15:54 +0000 (UTC) Received: from pro2.mail.ovh.net (unknown [10.108.20.150]) by director3.derp.mail-out.ovh.net (Postfix) with ESMTPS id B41B0FD6C6; Tue, 28 Mar 2023 16:15:54 +0000 (UTC) Received: from localhost.localdomain (88.161.25.233) by DAG1EX1.emp2.local (172.16.2.1) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Tue, 28 Mar 2023 18:15:54 +0200 From: Jean-Jacques Hiblot To: , , , , CC: , , , , , , , Jean-Jacques Hiblot Subject: [PATCH v8 1/6] devres: provide devm_krealloc_array() Date: Tue, 28 Mar 2023 18:15:36 +0200 Message-ID: <20230328161541.599463-2-jjhiblot@traphandler.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230328161541.599463-1-jjhiblot@traphandler.com> References: <20230328161541.599463-1-jjhiblot@traphandler.com> MIME-Version: 1.0 X-Originating-IP: [88.161.25.233] X-ClientProxiedBy: DAG8EX1.emp2.local (172.16.2.81) To DAG1EX1.emp2.local (172.16.2.1) X-Ovh-Tracer-Id: 1349391039146637787 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: 0 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvhedrvdehgedgleekucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecuhedttdenucenucfjughrpefhvfevufffkffojghfggfgtghisehtkeertdertddtnecuhfhrohhmpeflvggrnhdqlfgrtghquhgvshcujfhisghlohhtuceojhhjhhhisghlohhtsehtrhgrphhhrghnughlvghrrdgtohhmqeenucggtffrrghtthgvrhhnpeduteevleevvefggfdvueffffejhfehheeuiedtgedtjeeghfehueduudegfeefueenucfkpheptddrtddrtddrtddpkeekrdduiedurddvhedrvdeffeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhhouggvpehsmhhtphhouhhtpdhhvghlohepughirhgvtghtohhrfedruggvrhhprdhmrghilhdqohhuthdrohhvhhdrnhgvthdpihhnvghtpedtrddtrddtrddtpdhmrghilhhfrhhomhepjhhjhhhisghlohhtsehtrhgrphhhrghnughlvghrrdgtohhmpdhnsggprhgtphhtthhopedupdhrtghpthhtoheplhhinhhugidqlhgvughssehvghgvrhdrkhgvrhhnvghlrdhorhhgpdfovfetjfhoshhtpehmohehieef Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Implement the managed variant of krealloc_array(). This internally uses devm_krealloc() and as such is usable with all memory allocated by devm_kmalloc() (or devres functions using it implicitly like devm_kmemdup(), devm_kstrdup() etc.). Managed realloc'ed chunks can be manually released with devm_kfree(). Signed-off-by: Jean-Jacques Hiblot Reviewed-by: Andy Shevchenko --- include/linux/device.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/linux/device.h b/include/linux/device.h index 44e3acae7b36..a9624478ac24 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -223,6 +223,19 @@ static inline void *devm_kcalloc(struct device *dev, { return devm_kmalloc_array(dev, n, size, flags | __GFP_ZERO); } +static inline void *devm_krealloc_array(struct device *dev, + void *p, + size_t new_n, + size_t new_size, + gfp_t flags) +{ + size_t bytes; + + if (unlikely(check_mul_overflow(new_n, new_size, &bytes))) + return NULL; + + return devm_krealloc(dev, p, bytes, flags); +} void devm_kfree(struct device *dev, const void *p); char *devm_kstrdup(struct device *dev, const char *s, gfp_t gfp) __malloc; const char *devm_kstrdup_const(struct device *dev, const char *s, gfp_t gfp);