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authorSteven Rostedt <srostedt@redhat.com>2008-12-02 15:34:08 -0500
committerIngo Molnar <mingo@elte.hu>2008-12-03 08:56:21 +0100
commit347fdd9dd4e5d3f3a4e415925c35bdff1d59c3a9 (patch)
treec5556f49791524ae1dee92424afc85d78c700c1d /arch/x86
parent8789a9e7df6bf9b93739c4c7d4e380725bc9e936 (diff)
ftrace: clean up function graph asm
Impact: clean up There exists macros for x86 asm to handle x86_64 and i386. This patch updates function graph asm to use them. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/ftrace.c20
1 files changed, 4 insertions, 16 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 58832478b94..1a5b8f8cb3c 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -467,28 +467,16 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
* ignore such a protection.
*/
asm volatile(
-#ifdef CONFIG_X86_64
- "1: movq (%[parent_old]), %[old]\n"
- "2: movq %[return_hooker], (%[parent_replaced])\n"
-#else
- "1: movl (%[parent_old]), %[old]\n"
- "2: movl %[return_hooker], (%[parent_replaced])\n"
-#endif
+ "1: " _ASM_MOV " (%[parent_old]), %[old]\n"
+ "2: " _ASM_MOV " %[return_hooker], (%[parent_replaced])\n"
" movl $0, %[faulted]\n"
".section .fixup, \"ax\"\n"
"3: movl $1, %[faulted]\n"
".previous\n"
- ".section __ex_table, \"a\"\n"
-#ifdef CONFIG_X86_64
- " .quad 1b, 3b\n"
- " .quad 2b, 3b\n"
-#else
- " .long 1b, 3b\n"
- " .long 2b, 3b\n"
-#endif
- ".previous\n"
+ _ASM_EXTABLE(1b, 3b)
+ _ASM_EXTABLE(2b, 3b)
: [parent_replaced] "=r" (parent), [old] "=r" (old),
[faulted] "=r" (faulted)