- base = (unsigned long)task_stack_page(current);
- asm("mov %0, fp" : "=r" (fp));
+ base = (unsigned long)task_stack_page(tsk);
+
+ if (tsk != current) {
+#ifdef CONFIG_SMP
+ /*
+ * What guarantees do we have here that 'tsk'
+ * is not running on another CPU?
+ */
+ BUG();
+#else
+ data.no_sched_functions = 1;
+ fp = thread_saved_fp(tsk);
+#endif
+ } else {
+ data.no_sched_functions = 0;
+ asm("mov %0, fp" : "=r" (fp));
+ }