From: Jack Steiner <steiner@sgi.com>
To: linux-ia64@vger.kernel.org
Subject: [PATCH] - Increase max number of nodes (cpu_to_node_map)
Date: Wed, 05 Nov 2003 19:44:17 +0000 [thread overview]
Message-ID: <marc-linux-ia64-106806288024897@msgid-missing> (raw)
I hit a problem with systems having > 256 nodes. The
cpu_to_node_map array is an array of char - needs to be
bigger.
Here is a patch that changes it to a short.
--- linux_base/arch/ia64/kernel/smpboot.c Wed Nov 5 08:39:40 2003
+++ linux/arch/ia64/kernel/smpboot.c Wed Nov 5 12:30:12 2003
@@ -466,7 +466,7 @@
#ifdef CONFIG_NUMA
/* on which node is each logical CPU (one cacheline even for 64 CPUs) */
-volatile char cpu_to_node_map[NR_CPUS] __cacheline_aligned;
+volatile short cpu_to_node_map[NR_CPUS] __cacheline_aligned;
/* which logical CPUs are on which nodes */
volatile cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;
--- linux_base/include/asm-ia64/numa.h Wed Nov 5 12:49:18 2003
+++ linux/include/asm-ia64/numa.h Wed Nov 5 12:31:04 2003
@@ -24,7 +24,7 @@
#include <asm/mmzone.h>
-extern volatile char cpu_to_node_map[NR_CPUS] __cacheline_aligned;
+extern volatile short cpu_to_node_map[NR_CPUS] __cacheline_aligned;
extern volatile cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;
/* Stuff below this line could be architecture independent */
--
Thanks
Jack Steiner (steiner@sgi.com) 651-683-5302
Principal Engineer SGI - Silicon Graphics, Inc.
next reply other threads:[~2003-11-05 19:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-05 19:44 Jack Steiner [this message]
2003-11-06 17:06 ` [PATCH] - Increase max number of nodes (cpu_to_node_map) Matthew Wilcox
2003-11-06 17:43 ` Jack Steiner
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