On Monday, October 25, 2010 17:27:53 Jate Sujjavanich wrote:
> +{
> + struct mm_struct *mm = get_task_mm(task);
> +
> + unsigned long stack_length = mm->start_stack - mm->context.end_stack;
> + unsigned char *stack_first_data =
> + (unsigned char *)mm->context.end_stack;
> + unsigned long stack_used;
> +
> + while ((stack_first_data < (unsigned char *)mm->start_stack)
> + && (*stack_first_data == 0))
> + stack_first_data++;
> +
> + stack_used = mm->start_stack - (unsigned long)stack_first_data;
> +
> + /* est stack size, zero zone */
> + seq_printf(m, "%lu %lu\n", stack_length, (unsigned long)stack_used);
> +
> + return 0;
> +}since the app itself knows where its stack is, you should be using that instead of an unreliable scan. simply use the user_stack_pointer() helper from asm/ptrace.h. -mike
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