* [PATCH] - Increase max kmalloc size for very large systems
@ 2006-03-03 15:52 Jack Steiner
0 siblings, 0 replies; only message in thread
From: Jack Steiner @ 2006-03-03 15:52 UTC (permalink / raw)
To: akpm; +Cc: linux-kernel
Systems with extemely large numbers of nodes or cpus need to
kmalloc structures larger than is currently supported. This
patch increases the maximum supported size for very large systems.
This patch should have no effect on current systems.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Index: linux/include/linux/kmalloc_sizes.h
===================================================================
--- linux.orig/include/linux/kmalloc_sizes.h 2006-03-01 16:07:31.000000000 -0600
+++ linux/include/linux/kmalloc_sizes.h 2006-03-02 13:40:27.000000000 -0600
@@ -19,8 +19,10 @@
CACHE(32768)
CACHE(65536)
CACHE(131072)
-#ifndef CONFIG_MMU
+#if (NR_CPUS > 512) || (MAX_NUMNODES > 256) || !defined(CONFIG_MMU)
CACHE(262144)
+#endif
+#ifndef CONFIG_MMU
CACHE(524288)
CACHE(1048576)
#ifdef CONFIG_LARGE_ALLOCS
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2006-03-03 15:52 [PATCH] - Increase max kmalloc size for very large systems Jack Steiner
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