diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:33:23 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:33:23 +0100 |
| commit | 5f5cd8fd60c71ce47d2ce4e60e7ccbc306e91c64 (patch) | |
| tree | d41e31a278f4e70ce4d9cc2ad88d298058f673bf | |
| parent | c49a4955ea504c82f6b690491639bba5b8c1dc47 (diff) | |
x86: add debug of invalid per_cpu map accesses
dont crash survivable situations.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/asm-x86/topology.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h index f1e12329078..9a8228a177c 100644 --- a/include/asm-x86/topology.h +++ b/include/asm-x86/topology.h @@ -66,14 +66,15 @@ static inline int early_cpu_to_node(int cpu) static inline int cpu_to_node(int cpu) { -#ifdef CONFIG_DEBUG_PER_CPU_MAPS - if(x86_cpu_to_node_map_early_ptr) { +#ifdef CONFIG_DEBUG_PER_CPU_MAPS + if (x86_cpu_to_node_map_early_ptr) { printk("KERN_NOTICE cpu_to_node(%d): usage too early!\n", (int)cpu); - BUG(); + dump_stack(); + return ((int *)x86_cpu_to_node_map_early_ptr)[cpu]; } #endif - if(per_cpu_offset(cpu)) + if (per_cpu_offset(cpu)) return per_cpu(x86_cpu_to_node_map, cpu); else return NUMA_NO_NODE; |