From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751873AbaLaCNy (ORCPT ); Tue, 30 Dec 2014 21:13:54 -0500 Received: from mail-la0-f49.google.com ([209.85.215.49]:41470 "EHLO mail-la0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750743AbaLaCNv (ORCPT ); Tue, 30 Dec 2014 21:13:51 -0500 From: Rasmus Villemoes To: Andrew Morton Cc: Rasmus Villemoes , linux-kernel@vger.kernel.org Subject: [PATCH 2/2] lib/bitmap.c: Elide bitmap_copy_le on little-endian Date: Wed, 31 Dec 2014 03:13:32 +0100 Message-Id: <1419992012-15545-2-git-send-email-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 2.1.3 In-Reply-To: <1419992012-15545-1-git-send-email-linux@rasmusvillemoes.dk> References: <1419992012-15545-1-git-send-email-linux@rasmusvillemoes.dk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On little-endian, there's no reason to have an extra, presumably less efficient, way of copying a bitmap. Signed-off-by: Rasmus Villemoes --- include/linux/bitmap.h | 4 ++++ lib/bitmap.c | 2 ++ 2 files changed, 6 insertions(+) diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index bd1748919872..a1977e153e63 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -170,7 +170,11 @@ extern void bitmap_fold(unsigned long *dst, const unsigned long *orig, extern int bitmap_find_free_region(unsigned long *bitmap, unsigned int bits, int order); extern void bitmap_release_region(unsigned long *bitmap, unsigned int pos, int order); extern int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order); +#ifdef __BIG_ENDIAN extern void bitmap_copy_le(unsigned long *dst, const unsigned long *src, unsigned int nbits); +#else +#define bitmap_copy_le bitmap_copy +#endif extern int bitmap_ord_to_pos(const unsigned long *bitmap, int n, int bits); extern int bitmap_print_to_pagebuf(bool list, char *buf, const unsigned long *maskp, int nmaskbits); diff --git a/lib/bitmap.c b/lib/bitmap.c index 5ded9180528b..8014996b1531 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -1207,6 +1207,7 @@ EXPORT_SYMBOL(bitmap_allocate_region); * * Require nbits % BITS_PER_LONG == 0. */ +#ifdef __BIG_ENDIAN void bitmap_copy_le(unsigned long *dst, const unsigned long *src, unsigned int nbits) { unsigned int i; @@ -1219,3 +1220,4 @@ void bitmap_copy_le(unsigned long *dst, const unsigned long *src, unsigned int n } } EXPORT_SYMBOL(bitmap_copy_le); +#endif -- 2.1.3