From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751183AbeFAIb3 (ORCPT ); Fri, 1 Jun 2018 04:31:29 -0400 Received: from mga11.intel.com ([192.55.52.93]:39795 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750968AbeFAIbY (ORCPT ); Fri, 1 Jun 2018 04:31:24 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,465,1520924400"; d="scan'208";a="233516141" From: Andy Shevchenko To: Dmitry Torokhov , Jeffy Chen , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Andy Shevchenko Subject: [PATCH v1 1/3] bitmap: Add bitmap_alloc(), bitmap_zalloc() and bitmap_free() Date: Fri, 1 Jun 2018 11:31:18 +0300 Message-Id: <20180601083120.40352-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.17.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org A lot of code become ugly because of open coding allocations for bitmaps. Introduce three helpers to allow users be more clear of intention and keep their code neat. Signed-off-by: Andy Shevchenko --- include/linux/bitmap.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 1ee46f492267..845822425393 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -6,6 +6,7 @@ #include #include +#include #include #include @@ -104,6 +105,21 @@ * contain all bit positions from 0 to 'bits' - 1. */ +static inline unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags) +{ + return kmalloc_array(BITS_TO_LONGS(nbits), sizeof(unsigned long), flags); +} + +static inline unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags) +{ + return kcalloc(BITS_TO_LONGS(nbits), sizeof(unsigned long), flags); +} + +static inline void bitmap_free(const unsigned long *bitmap) +{ + kfree(bitmap); +} + /* * lib/bitmap.c provides these functions: */ -- 2.17.0