From patchwork Mon Mar 15 09:13:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 402034 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 7AF4FC433E0 for ; Mon, 15 Mar 2021 09:15:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5BD1C64E6B for ; Mon, 15 Mar 2021 09:15:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229746AbhCOJOi (ORCPT ); Mon, 15 Mar 2021 05:14:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39566 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229686AbhCOJOV (ORCPT ); Mon, 15 Mar 2021 05:14:21 -0400 Received: from mail-wr1-x42e.google.com (mail-wr1-x42e.google.com [IPv6:2a00:1450:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C626CC061762 for ; Mon, 15 Mar 2021 02:14:19 -0700 (PDT) Received: by mail-wr1-x42e.google.com with SMTP id j18so5284782wra.2 for ; Mon, 15 Mar 2021 02:14:19 -0700 (PDT) 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=I//Q3Rak1EpVNRDtRGeww40WUlM2LbS/M05ekONU4GQ=; b=f1gaT8JOF07kfR1GIVt3bonS3qRiBTNvSrfnLU1MmbY4X4lmKobMadPhA7/RJHvntX vHqhaEUhh37jioU2zjGZ9KwpS8T21BakJizbqkFr1gLTdA5wlidamYFv2KF4k1jGBJ6g IqiLpigO9f+o7l2+urpFnArW8+nop+4rkPlBKo2T30Lj7vYU7EWZcTannlhJMleMXLXY rJrjSqyVDyxTobKo47ZCta1N/GMyzNRAlNw1+2tb3HJjyrIKXxHtIT8U468ZxnEfUiKc fSDGZJATEReXAAr1hfNms+W4TOsxGoQdhcCiP32hJDtrg68IbYACwqtr/V1QV9SqzGSW DddQ== 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=I//Q3Rak1EpVNRDtRGeww40WUlM2LbS/M05ekONU4GQ=; b=PX0Db8MeJYJ/E2rC0RvTWFBPEVqNM82/g4a8As8rR9kWw4WDmIAFnX+Q4rfB8Nyqyf 6eNmRP50VPwPe9cLY2xsSkas+TeZk1xtRrvs0pIHNudKaZCvIMhFCIovpkADnjD8ntWx e8hAnS/W8AzJi4kwTzJYC+spuKvQjsYYtCdhcmHnX5SPvBdIBI5k2DHjFNuUcBq7q5tF rPVwNSIVhI2B3Y6z4HRB4N7QMrqI1i8UI93bFPG6iAv9fA1k85KZSoYeVuNXKZz9nD0S ngP0AzogLlNA7IcKeOqUH3sXjVqF3HATasXrLlDxQu1ZlddZ0BfP2zl+nticgCMXMfNj 50Ng== X-Gm-Message-State: AOAM530KCM0R5aNr3N8JC+tukFGUOc4RydT9z1jd9POTc1AbTJDGemEc gP2i0M/RN8EYGio083SFQmauXg== X-Google-Smtp-Source: ABdhPJytTVmPESyI06mXakLaYibH4Ja9idFeJCFiv7lL4WnfKbAG4SwqOFVWwSVYqr/Wjhj+1PQQ4g== X-Received: by 2002:a5d:6684:: with SMTP id l4mr26313900wru.381.1615799657607; Mon, 15 Mar 2021 02:14:17 -0700 (PDT) Received: from debian-brgl.home (lfbn-nic-1-149-6.w2-15.abo.wanadoo.fr. [2.15.231.6]) by smtp.gmail.com with ESMTPSA id z3sm17978822wrw.96.2021.03.15.02.14.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Mar 2021 02:14:17 -0700 (PDT) From: Bartosz Golaszewski To: Joel Becker , Christoph Hellwig , Shuah Khan , Linus Walleij , Andy Shevchenko , =?utf-8?q?Uwe_Kleine-K=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 v5 07/11] lib: bitmap: provide devm_bitmap_alloc() and devm_bitmap_zalloc() Date: Mon, 15 Mar 2021 10:13:56 +0100 Message-Id: <20210315091400.13772-8-brgl@bgdev.pl> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210315091400.13772-1-brgl@bgdev.pl> References: <20210315091400.13772-1-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..27e08c0e547e 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_GPL(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_GPL(devm_bitmap_zalloc); + #if BITS_PER_LONG == 64 /** * bitmap_from_arr32 - copy the contents of u32 array of bits to bitmap