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-rw-r--r--arch/s390/kernel/mcount.S16
1 files changed, 6 insertions, 10 deletions
diff --git a/arch/s390/kernel/mcount.S b/arch/s390/kernel/mcount.S
index 1e6a55795628..7e2c38ba1373 100644
--- a/arch/s390/kernel/mcount.S
+++ b/arch/s390/kernel/mcount.S
@@ -5,21 +5,19 @@
5 * 5 *
6 */ 6 */
7 7
8#include <linux/linkage.h>
8#include <asm/asm-offsets.h> 9#include <asm/asm-offsets.h>
9 10
10 .section .kprobes.text, "ax" 11 .section .kprobes.text, "ax"
11 12
12 .globl ftrace_stub 13ENTRY(ftrace_stub)
13ftrace_stub:
14 br %r14 14 br %r14
15 15
16 .globl _mcount 16ENTRY(_mcount)
17_mcount:
18#ifdef CONFIG_DYNAMIC_FTRACE 17#ifdef CONFIG_DYNAMIC_FTRACE
19 br %r14 18 br %r14
20 19
21 .globl ftrace_caller 20ENTRY(ftrace_caller)
22ftrace_caller:
23#endif 21#endif
24 stm %r2,%r5,16(%r15) 22 stm %r2,%r5,16(%r15)
25 bras %r1,2f 23 bras %r1,2f
@@ -41,8 +39,7 @@ ftrace_caller:
41#ifdef CONFIG_FUNCTION_GRAPH_TRACER 39#ifdef CONFIG_FUNCTION_GRAPH_TRACER
42 l %r2,100(%r15) 40 l %r2,100(%r15)
43 l %r3,152(%r15) 41 l %r3,152(%r15)
44 .globl ftrace_graph_caller 42ENTRY(ftrace_graph_caller)
45ftrace_graph_caller:
46# The bras instruction gets runtime patched to call prepare_ftrace_return. 43# The bras instruction gets runtime patched to call prepare_ftrace_return.
47# See ftrace_enable_ftrace_graph_caller. The patched instruction is: 44# See ftrace_enable_ftrace_graph_caller. The patched instruction is:
48# bras %r14,prepare_ftrace_return 45# bras %r14,prepare_ftrace_return
@@ -56,8 +53,7 @@ ftrace_graph_caller:
56 53
57#ifdef CONFIG_FUNCTION_GRAPH_TRACER 54#ifdef CONFIG_FUNCTION_GRAPH_TRACER
58 55
59 .globl return_to_handler 56ENTRY(return_to_handler)
60return_to_handler:
61 stm %r2,%r5,16(%r15) 57 stm %r2,%r5,16(%r15)
62 st %r14,56(%r15) 58 st %r14,56(%r15)
63 lr %r0,%r15 59 lr %r0,%r15