void show_stack()

in kernel/traps.c [34:78]

• 34 lines of code
• 8 McCabe index (conditional complexity)

void show_stack(struct task_struct *task, unsigned long *sp, const char *loglvl)
{
	unsigned long words_to_show;
	u32 fp = (u32) sp;

	if (fp == 0) {
		if (task) {
			fp = ((struct thread_info *)
				(task->stack))->cpu_context.r1;
		} else {
			/* Pick up caller of dump_stack() */
			fp = (u32)&sp - 8;
		}
	}

	words_to_show = (THREAD_SIZE - (fp & (THREAD_SIZE - 1))) >> 2;
	if (kstack_depth_to_print && (words_to_show > kstack_depth_to_print))
		words_to_show = kstack_depth_to_print;

	printk("%sKernel Stack:\n", loglvl);

	/*
	 * Make the first line an 'odd' size if necessary to get
	 * remaining lines to start at an address multiple of 0x10
	 */
	if (fp & 0xF) {
		unsigned long line1_words = (0x10 - (fp & 0xF)) >> 2;
		if (line1_words < words_to_show) {
			print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, 32,
				       4, (void *)fp, line1_words << 2, 0);
			fp += line1_words << 2;
			words_to_show -= line1_words;
		}
	}
	print_hex_dump(loglvl, "", DUMP_PREFIX_ADDRESS, 32, 4, (void *)fp,
		       words_to_show << 2, 0);
	printk("%s\n\nCall Trace:\n", loglvl);
	microblaze_unwind(task, NULL, loglvl);
	printk("%s\n", loglvl);

	if (!task)
		task = current;

	debug_show_held_locks(task);
}