update_debug_stack 490 arch/x86/kernel/nmi.c static DEFINE_PER_CPU(int, update_debug_stack); update_debug_stack 533 arch/x86/kernel/nmi.c this_cpu_write(update_debug_stack, 1); update_debug_stack 547 arch/x86/kernel/nmi.c if (unlikely(this_cpu_read(update_debug_stack))) { update_debug_stack 549 arch/x86/kernel/nmi.c this_cpu_write(update_debug_stack, 0);