From patchwork Fri Mar 12 09:56:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1451824 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=bHHoNDW3; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Dxh8j6yplz9sVw for ; Fri, 12 Mar 2021 20:58:29 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233357AbhCLJ5t (ORCPT ); Fri, 12 Mar 2021 04:57:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233517AbhCLJ5a (ORCPT ); Fri, 12 Mar 2021 04:57:30 -0500 Received: from mail-wm1-x32a.google.com (mail-wm1-x32a.google.com [IPv6:2a00:1450:4864:20::32a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22849C061574 for ; Fri, 12 Mar 2021 01:57:30 -0800 (PST) Received: by mail-wm1-x32a.google.com with SMTP id n11-20020a05600c4f8bb029010e5cf86347so4249192wmq.1 for ; Fri, 12 Mar 2021 01:57:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=b9JrBKuO/UMxqLp0dR5QODxDjy8Sowg28gDkd3Cd158=; b=bHHoNDW3JRGsD6bPfO5HboJCO/DehCeddkWOaLZ9vSGTsmAg0oVXJ9+gQtURgmNP7I n++im+iQ6YWB0vmkGEf745KDWKRrqSgfZ2KLo90Sh6oTjTmK/FFUc+zLbD2hJagMHfS0 mMqCprQNRAx3IcXo4YFwXB9+6XguRg+BvDxD9hPgPIsoufWytlSgkWOHa0/8bkC+kjJl PtbolL+SFbeuNgQAyzAQzkjF+Sp1aIj+DI9sOurvCX/BcpHVPPvWX8OfIwtrzFurZ8cF 9Fiw+P72fYeXix3mf/tpg0ZllBC6xQjA4ZKLcB/oOgpcgqGNFMR/HYzhe0B77++Qg/dA RiUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=b9JrBKuO/UMxqLp0dR5QODxDjy8Sowg28gDkd3Cd158=; b=hJK7q8NA63JsE4Bf5PTt5BC6807YaOQdQC/x4Dn35eFTSXe+lyEGaLTtiGfBdrM7Pg OFz64ekxDZ/Rji6zf3nkZoY6IYO5G01CxNEUsYascbAer8P+gQYyaEWH1iA2OPr4Qe9R am88ldwXfBkETUkNy2jhp12mIw6u3XxXs4BJFa+fj3F4lQzuUQ5wuGYRLLmiybKJU3Fr +Fv8WR2gJyLT3nQRVlgjIRUG/8ROxy6Z8sc9huIWNMvLc/zCzlxPaT4ku5ifjqcpmyzn OQ4xD0AOYakYWNPmKVvkj3AKXyzewRF6T4J2/air3U4TkXSvNDAz/fwgfGpiZo7sUbHa wxwQ== X-Gm-Message-State: AOAM533jjP4RE3k3AG/O10T6Hqc2L8O+cXQ+UK9unokIFTKGdrZmUaEA NZnPBTeh8NBu4+RyupqR3oZbeg== X-Google-Smtp-Source: ABdhPJz/VCNVA1h2Dh1IIDQLX4482piL9UIP1+SIueczxwwCxKy9iyV8C1qVEFLMrj0+PNukBJKO2g== X-Received: by 2002:a1c:1f04:: with SMTP id f4mr12505897wmf.12.1615543048903; Fri, 12 Mar 2021 01:57:28 -0800 (PST) Received: from debian-brgl.home (amarseille-656-1-4-167.w90-8.abo.wanadoo.fr. [90.8.158.167]) by smtp.gmail.com with ESMTPSA id x13sm7031630wrt.75.2021.03.12.01.57.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Mar 2021 01:57:28 -0800 (PST) From: Bartosz Golaszewski To: Joel Becker , Christoph Hellwig , Shuah Khan , Linus Walleij , Andy Shevchenko , =?utf-8?q?Uwe_Kleine-K?= =?utf-8?q?=C3=B6nig?= , Geert Uytterhoeven , Kent Gibson , Jonathan Corbet , Greg Kroah-Hartman Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v4 07/11] lib: bitmap: provide devm_bitmap_alloc() and devm_bitmap_zalloc() Date: Fri, 12 Mar 2021 10:56:56 +0100 Message-Id: <20210312095700.16277-8-brgl@bgdev.pl> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210312095700.16277-1-brgl@bgdev.pl> References: <20210312095700.16277-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Bartosz Golaszewski Provide managed variants of bitmap_alloc() and bitmap_zalloc(). Signed-off-by: Bartosz Golaszewski Reviewed-by: Andy Shevchenko --- include/linux/bitmap.h | 8 ++++++++ lib/bitmap.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+) diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 3282db97e06c..73d039476fa4 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -9,6 +9,8 @@ #include #include +struct device; + /* * bitmaps provide bit arrays that consume one or more unsigned * longs. The bitmap interface and available operations are listed @@ -122,6 +124,12 @@ unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags); unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags); void bitmap_free(const unsigned long *bitmap); +/* Managed variants of the above. */ +unsigned long *devm_bitmap_alloc(struct device *dev, + unsigned int nbits, gfp_t flags); +unsigned long *devm_bitmap_zalloc(struct device *dev, + unsigned int nbits, gfp_t flags); + /* * lib/bitmap.c provides these functions: */ diff --git a/lib/bitmap.c b/lib/bitmap.c index 78f70d9007ad..b4fd7fd084c6 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -1263,6 +1264,38 @@ void bitmap_free(const unsigned long *bitmap) } EXPORT_SYMBOL(bitmap_free); +static void devm_bitmap_free(void *data) +{ + unsigned long *bitmap = data; + + bitmap_free(bitmap); +} + +unsigned long *devm_bitmap_alloc(struct device *dev, + unsigned int nbits, gfp_t flags) +{ + unsigned long *bitmap; + int ret; + + bitmap = bitmap_alloc(nbits, flags); + if (!bitmap) + return NULL; + + ret = devm_add_action_or_reset(dev, devm_bitmap_free, bitmap); + if (ret) + return NULL; + + return bitmap; +} +EXPORT_SYMBOL(devm_bitmap_alloc); + +unsigned long *devm_bitmap_zalloc(struct device *dev, + unsigned int nbits, gfp_t flags) +{ + return devm_bitmap_alloc(dev, nbits, flags | __GFP_ZERO); +} +EXPORT_SYMBOL(devm_bitmap_zalloc); + #if BITS_PER_LONG == 64 /** * bitmap_from_arr32 - copy the contents of u32 array of bits to bitmap