From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759857AbaGCWnc (ORCPT ); Thu, 3 Jul 2014 18:43:32 -0400 Received: from mail-lb0-f174.google.com ([209.85.217.174]:60869 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759772AbaGCWn2 (ORCPT ); Thu, 3 Jul 2014 18:43:28 -0400 From: Rasmus Villemoes To: linux-kernel@vger.kernel.org Cc: Rasmus Villemoes Subject: [PATCH 03/18] lib: bitmap: Make nbits parameter of bitmap_equal unsigned Date: Fri, 4 Jul 2014 00:42:49 +0200 Message-Id: <1404427384-11422-4-git-send-email-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1404427384-11422-1-git-send-email-linux@rasmusvillemoes.dk> References: <1404427384-11422-1-git-send-email-linux@rasmusvillemoes.dk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The compiler can generate slightly smaller and simpler code when it knows that "nbits" is non-negative. Since no-one passes a negative bit-count, this shouldn't affect the semantics. Signed-off-by: Rasmus Villemoes --- include/linux/bitmap.h | 2 +- lib/bitmap.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index bc7e520..1e0f46c 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -91,7 +91,7 @@ extern int __bitmap_empty(const unsigned long *bitmap, unsigned int nbits); extern int __bitmap_full(const unsigned long *bitmap, unsigned int nbits); extern int __bitmap_equal(const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits); + const unsigned long *bitmap2, unsigned int nbits); extern void __bitmap_complement(unsigned long *dst, const unsigned long *src, int bits); extern void __bitmap_shift_right(unsigned long *dst, diff --git a/lib/bitmap.c b/lib/bitmap.c index 9859f38..d6bb955 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -71,9 +71,9 @@ int __bitmap_full(const unsigned long *bitmap, unsigned int bits) EXPORT_SYMBOL(__bitmap_full); int __bitmap_equal(const unsigned long *bitmap1, - const unsigned long *bitmap2, int bits) + const unsigned long *bitmap2, unsigned int bits) { - int k, lim = bits/BITS_PER_LONG; + unsigned int k, lim = bits/BITS_PER_LONG; for (k = 0; k < lim; ++k) if (bitmap1[k] != bitmap2[k]) return 0; -- 1.9.2