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| author | Steven Rostedt <srostedt@redhat.com> | 2008-12-02 21:34:08 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-03 08:56:21 +0100 |
| commit | 347fdd9dd4e5d3f3a4e415925c35bdff1d59c3a9 (patch) | |
| tree | c5556f49791524ae1dee92424afc85d78c700c1d /arch/x86/kernel/ftrace.c | |
| parent | ring-buffer: read page interface (diff) | |
| download | linux-347fdd9dd4e5d3f3a4e415925c35bdff1d59c3a9.tar.xz linux-347fdd9dd4e5d3f3a4e415925c35bdff1d59c3a9.zip | |
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/kernel/ftrace.c')
| -rw-r--r-- | arch/x86/kernel/ftrace.c | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 58832478b94e..1a5b8f8cb3cc 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) |