LoongArch: Add STACKTRACE support

[linux-2.6-microblaze.git] / arch / loongarch / include / asm / switch_to.h

diff --git a/arch/loongarch/include/asm/switch_to.h b/arch/loongarch/include/asm/switch_to.h
index 2a8d043..43a5ab1 100644 (file)
--- a/arch/loongarch/include/asm/switch_to.h
+++ b/arch/loongarch/include/asm/switch_to.h
@@ -15,12 +15,15 @@ struct task_struct;
  * @prev:      The task previously executed.
  * @next:      The task to begin executing.
  * @next_ti:   task_thread_info(next).
+ * @sched_ra:  __schedule return address.
+ * @sched_cfa: __schedule call frame address.
  *
  * This function is used whilst scheduling to save the context of prev & load
  * the context of next. Returns prev.
  */
 extern asmlinkage struct task_struct *__switch_to(struct task_struct *prev,
-                       struct task_struct *next, struct thread_info *next_ti);
+                       struct task_struct *next, struct thread_info *next_ti,
+                       void *sched_ra, void *sched_cfa);
 
 /*
  * For newly created kernel threads switch_to() will return to
@@ -28,10 +31,11 @@ extern asmlinkage struct task_struct *__switch_to(struct task_struct *prev,
  * That is, everything following __switch_to() will be skipped for new threads.
  * So everything that matters to new threads should be placed before __switch_to().
  */
-#define switch_to(prev, next, last)                                    \
-do {                                                                   \
-       lose_fpu_inatomic(1, prev);                                     \
-       (last) = __switch_to(prev, next, task_thread_info(next));       \
+#define switch_to(prev, next, last)                                            \
+do {                                                                           \
+       lose_fpu_inatomic(1, prev);                                             \
+       (last) = __switch_to(prev, next, task_thread_info(next),                \
+                __builtin_return_address(0), __builtin_frame_address(0));      \
 } while (0)
 
 #endif /* _ASM_SWITCH_TO_H */