linux-kernel - [PATCH] FRV: Permit large kmalloc allocations [try #2]

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Date:	Mon, 02 Oct 2006 17:26:57 +0100
From:	David Howells <dhowells@...hat.com>
To:	akpm@...l.org
Cc:	dhowells@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH] FRV: Permit large kmalloc allocations [try #2]

From: David Howells <dhowells@...hat.com>

Permit kmalloc() to make allocations of up to 32MB if so configured.  This may
be useful under NOMMU conditions where vmalloc() can't do this.

Signed-Off-By: David Howells <dhowells@...hat.com>
---

 arch/frv/Kconfig |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index f7b171b..cf1c446 100644
--- a/arch/frv/Kconfig
+++ b/arch/frv/Kconfig
@@ -86,6 +86,14 @@ config HIGHPTE
 	  with a lot of RAM, this can be wasteful of precious low memory.
 	  Setting this option will put user-space page tables in high memory.
 
+config LARGE_ALLOCS
+	bool "Allow allocating large blocks (> 1MB) of memory"
+	help
+	  Allow the slab memory allocator to keep chains for very large memory
+	  sizes - up to 32MB. You may need this if your system has a lot of
+	  RAM, and you need to able to allocate very large contiguous chunks.
+	  If unsure, say N.
+
 source "mm/Kconfig"
 
 choice
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