PANIC_CPU_INVALID
atomic_t panic_cpu = ATOMIC_INIT(PANIC_CPU_INVALID);
atomic_t panic_redirect_cpu = ATOMIC_INIT(PANIC_CPU_INVALID);
int old_cpu = PANIC_CPU_INVALID;
atomic_set(&panic_redirect_cpu, PANIC_CPU_INVALID);
old_cpu = PANIC_CPU_INVALID;
atomic_set(&panic_cpu, PANIC_CPU_INVALID);
return unlikely(atomic_read(&panic_cpu) != PANIC_CPU_INVALID);
if (atomic_read(&panic_redirect_cpu) != PANIC_CPU_INVALID &&