From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932445Ab1GNVbo (ORCPT ); Thu, 14 Jul 2011 17:31:44 -0400 Received: from hera.kernel.org ([140.211.167.34]:33872 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932345Ab1GNVbm (ORCPT ); Thu, 14 Jul 2011 17:31:42 -0400 Date: Thu, 14 Jul 2011 21:31:34 GMT From: tip-bot for Tejun Heo Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com, benh@kernel.crashing.org, yinghai@kernel.org, tj@kernel.org, tglx@linutronix.de, hpa@linux.intel.com Reply-To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, yinghai@kernel.org, benh@kernel.crashing.org, tj@kernel.org, tglx@linutronix.de, hpa@linux.intel.com In-Reply-To: <1310462166-31469-2-git-send-email-tj@kernel.org> References: <1310462166-31469-2-git-send-email-tj@kernel.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/memblock] memblock: Remove memblock_memory_can_coalesce() Git-Commit-ID: ed7b56a799cade11f458cd83e1150af54a66b7e8 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Thu, 14 Jul 2011 21:31:34 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: ed7b56a799cade11f458cd83e1150af54a66b7e8 Gitweb: http://git.kernel.org/tip/ed7b56a799cade11f458cd83e1150af54a66b7e8 Author: Tejun Heo AuthorDate: Tue, 12 Jul 2011 11:15:54 +0200 Committer: H. Peter Anvin CommitDate: Thu, 14 Jul 2011 11:47:40 -0700 memblock: Remove memblock_memory_can_coalesce() Arch could implement memblock_memor_can_coalesce() to veto merging of adjacent or overlapping memblock regions; however, no arch did and any vetoing would trigger WARN_ON(). Memblock regions are supposed to deal with proper memory anyway. Remove the unused hook. Signed-off-by: Tejun Heo Link: http://lkml.kernel.org/r/1310462166-31469-2-git-send-email-tj@kernel.org Cc: Yinghai Lu Cc: Benjamin Herrenschmidt Signed-off-by: H. Peter Anvin --- include/linux/memblock.h | 4 ---- mm/memblock.c | 29 ----------------------------- 2 files changed, 0 insertions(+), 33 deletions(-) diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 7400d02..aa5df9e 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -92,10 +92,6 @@ extern int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size); extern void memblock_dump_all(void); -/* Provided by the architecture */ -extern int memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1, - phys_addr_t addr2, phys_addr_t size2); - /** * memblock_set_current_limit - Set the current allocation limit to allow * limiting allocations to what is currently diff --git a/mm/memblock.c b/mm/memblock.c index a8edb42..bd3a3a9 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -251,12 +251,6 @@ static int __init_memblock memblock_double_array(struct memblock_type *type) return 0; } -extern int __init_memblock __weak memblock_memory_can_coalesce(phys_addr_t addr1, phys_addr_t size1, - phys_addr_t addr2, phys_addr_t size2) -{ - return 1; -} - static long __init_memblock memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size) { @@ -282,17 +276,6 @@ static long __init_memblock memblock_add_region(struct memblock_type *type, * of a block. */ if (base < rgn->base && end >= rgn->base) { - /* If we can't coalesce, create a new block */ - if (!memblock_memory_can_coalesce(base, size, - rgn->base, - rgn->size)) { - /* Overlap & can't coalesce are mutually - * exclusive, if you do that, be prepared - * for trouble - */ - WARN_ON(end != rgn->base); - goto new_block; - } /* We extend the bottom of the block down to our * base */ @@ -316,17 +299,6 @@ static long __init_memblock memblock_add_region(struct memblock_type *type, * top of a block */ if (base <= rend && end >= rend) { - /* If we can't coalesce, create a new block */ - if (!memblock_memory_can_coalesce(rgn->base, - rgn->size, - base, size)) { - /* Overlap & can't coalesce are mutually - * exclusive, if you do that, be prepared - * for trouble - */ - WARN_ON(rend != base); - goto new_block; - } /* We adjust our base down to enclose the * original block and destroy it. It will be * part of our new allocation. Since we've @@ -349,7 +321,6 @@ static long __init_memblock memblock_add_region(struct memblock_type *type, return 0; } - new_block: /* If we are out of space, we fail. It's too late to resize the array * but then this shouldn't have happened in the first place. */