add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/sh/kernel/dwarf.c
..
..
@@ -1,9 +1,6 @@
1
+// SPDX-License-Identifier: GPL-2.0
1
2
 /*
2
3
  * Copyright (C) 2009 Matt Fleming <matt@console-pimps.org>
3
- *
4
- * This file is subject to the terms and conditions of the GNU General Public
5
- * License.  See the file "COPYING" in the main directory of this archive
6
- * for more details.
7
4
  *
8
5
  * This is an implementation of a DWARF unwinder. Its main purpose is
9
6
  * for generating stacktrace information. Based on the DWARF 3
..
..
@@ -608,17 +605,18 @@
608
605
 	 * expected to find the real return address.
609
606
 	 */
610
607
 	if (pc == (unsigned long)&return_to_handler) {
611
-		int index = current->curr_ret_stack;
608
+		struct ftrace_ret_stack *ret_stack;
612
609
 
610
+		ret_stack = ftrace_graph_get_ret_stack(current, 0);
611
+		if (ret_stack)
612
+			pc = ret_stack->ret;
613
613
 		/*
614
614
 		 * We currently have no way of tracking how many
615
615
 		 * return_to_handler()'s we've seen. If there is more
616
616
 		 * than one patched return address on our stack,
617
617
 		 * complain loudly.
618
618
 		 */
619
-		WARN_ON(index > 0);
620
-
621
-		pc = current->ret_stack[index].ret;
619
+		WARN_ON(ftrace_graph_get_ret_stack(current, 1));
622
620
 	}
623
621
 #endif
624
622