linux-kernel - [tip:x86/mm] x86, mm: Add RESERVE_BRK

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Message-ID: <tip-161b0275e2311b8bd9609d5f32e2b703cf5d70a8@git.kernel.org>
Date:	Wed, 6 Oct 2010 06:04:48 GMT
From:	tip-bot for Jeremy Fitzhardinge <jeremy@...p.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, jeremy@...p.org, hpa@...or.com,
	mingo@...hat.com, tglx@...utronix.de,
	jeremy.fitzhardinge@...rix.com
Subject: [tip:x86/mm] x86, mm: Add RESERVE_BRK_ARRAY() helper

Commit-ID:  161b0275e2311b8bd9609d5f32e2b703cf5d70a8
Gitweb:     http://git.kernel.org/tip/161b0275e2311b8bd9609d5f32e2b703cf5d70a8
Author:     Jeremy Fitzhardinge <jeremy@...p.org>
AuthorDate: Thu, 2 Sep 2010 19:35:22 -0700
Committer:  H. Peter Anvin <hpa@...or.com>
CommitDate: Tue, 5 Oct 2010 22:16:54 -0700

x86, mm: Add RESERVE_BRK_ARRAY() helper

This is useful when converting static arrays into boot-time brk
allocated objects.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
LKML-Reference: <4C805EEA.1080205@...p.org>
Signed-off-by: H. Peter Anvin <hpa@...or.com>
---
 arch/x86/include/asm/setup.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index ef292c7..d6763b1 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -93,6 +93,11 @@ void *extend_brk(size_t size, size_t align);
 			: : "i" (sz));					\
 	}
 
+/* Helper for reserving space for arrays of things */
+#define RESERVE_BRK_ARRAY(type, name, entries)		\
+	type *name;					\
+	RESERVE_BRK(name, sizeof(type) * entries)
+
 #ifdef __i386__
 
 void __init i386_start_kernel(void);
--
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