From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: <20080121230647.038245000@sgi.com> References: <20080121230644.752379000@sgi.com> Date: Mon, 21 Jan 2008 15:06:45 -0800 From: travis@sgi.com Subject: [PATCH 1/1] x86: fix early cpu_to_node panic from nr_free_zone_pages Content-Disposition: inline; filename=fix-cpu_to_node-panic Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton , Andi Kleen , mingo@elte.hu Cc: Christoph Lameter , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: An early call to nr_free_zone_pages() calls numa_node_id() which needs to call early_cpu_to_node() since per_cpu(cpu_to_node_map) might not be setup yet. I also had to export x86_cpu_to_node_map_early_ptr because of some calls from the network code to numa_node_id(): net/ipv4/netfilter/arp_tables.c: net/ipv4/netfilter/ip_tables.c: net/ipv4/netfilter/ip_tables.c: Applies to both: 2.6.24-rc8-mm1 2.6.24-rc8-mm1 + latest (08/01/21) git-x86 patch Signed-off-by: Mike Travis --- arch/x86/mm/numa_64.c | 2 -- include/asm-x86/topology.h | 2 ++ 2 files changed, 2 insertions(+), 2 deletions(-) --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -37,9 +37,7 @@ int x86_cpu_to_node_map_init[NR_CPUS] = void *x86_cpu_to_node_map_early_ptr; DEFINE_PER_CPU(int, x86_cpu_to_node_map) = NUMA_NO_NODE; EXPORT_PER_CPU_SYMBOL(x86_cpu_to_node_map); -#ifdef CONFIG_DEBUG_PER_CPU_MAPS EXPORT_SYMBOL(x86_cpu_to_node_map_early_ptr); -#endif s16 apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = { [0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE --- a/include/asm-x86/topology.h +++ b/include/asm-x86/topology.h @@ -37,6 +37,8 @@ extern int cpu_to_node_map[]; DECLARE_PER_CPU(int, x86_cpu_to_node_map); extern int x86_cpu_to_node_map_init[]; extern void *x86_cpu_to_node_map_early_ptr; +/* Returns the number of the current Node. */ +#define numa_node_id() (early_cpu_to_node(raw_smp_processor_id())) #endif extern cpumask_t node_to_cpumask_map[]; -- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org