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authortravis@sgi.com <travis@sgi.com>2008-01-30 13:33:22 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:33:22 +0100
commitc49a4955ea504c82f6b690491639bba5b8c1dc47 (patch)
treebadef899e3e3376c1af68b942b7f6c8ff9a36df5 /arch/x86/mm
parent602a54a8cab2759fceb20b3e0c2a27c4eac005df (diff)
x86: add debug of invalid per_cpu map accesses
Provide a means to trap usages of per_cpu map variables before they are setup. Define CONFIG_DEBUG_PER_CPU_MAPS to activate. Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/mm')
-rw-r--r--arch/x86/mm/numa_64.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index 5d24dc1ec23..e157cb274b2 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -37,6 +37,9 @@ u16 x86_cpu_to_node_map_init[NR_CPUS] = {
void *x86_cpu_to_node_map_early_ptr;
DEFINE_PER_CPU(u16, 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
u16 apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE