#ifdef CONFIG_MAGIC_SYSRQ 
#ifdef CONFIG_DEBUG_STACK_USAGE 
struct thread_info *alloc_thread_info(struct task_struct *task){	struct thread_info *thread = NULL;	if (EXTRA_TASK_STRUCT) {		unsigned long *p = thread_info_head;		if (p) {			thread_info_head = (unsigned long *)p[0];			nr_thread_info -= 1;		}		thread = (struct thread_info *)p;	}	if (!thread)		thread = ll_alloc_task_struct();#ifdef CONFIG_MAGIC_SYSRQ	/*	 * The stack must be cleared if you want SYSRQ-T to	 * give sensible stack usage information	 */	if (thread) {		char *p = (char *)thread;		memzero(p+KERNEL_STACK_SIZE, KERNEL_STACK_SIZE);	}#endif	return thread;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/4f7a18124c1a44858fb74a1c4234015009952959/process.c/clean/arch/arm/kernel/process.c