From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 11 Oct 2007 09:15:36 +0000 (+0200)
Subject: x86_64: prepare shared lib/clear_page.S
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=0068f260578fc54aa7d10bb3e4a25118287f00f7;p=deliverable%2Flinux.git

x86_64: prepare shared lib/clear_page.S

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86_64/lib/Makefile b/arch/x86_64/lib/Makefile
index 4ecc6181db4d..4611996706a3 100644
--- a/arch/x86_64/lib/Makefile
+++ b/arch/x86_64/lib/Makefile
@@ -9,5 +9,5 @@ obj-$(CONFIG_SMP)	+= msr-on-cpu.o
 
 lib-y := csum-partial.o csum-copy_64.o csum-wrappers.o delay.o \
 	usercopy.o getuser.o putuser.o  \
-	thunk_64.o clear_page.o copy_page_64.o bitstr_64.o bitops.o
+	thunk_64.o clear_page_64.o copy_page_64.o bitstr_64.o bitops.o
 lib-y += memcpy.o memmove.o memset.o copy_user.o rwlock.o copy_user_nocache.o
diff --git a/arch/x86_64/lib/clear_page.S b/arch/x86_64/lib/clear_page.S
deleted file mode 100644
index 9a10a78bb4a4..000000000000
--- a/arch/x86_64/lib/clear_page.S
+++ /dev/null
@@ -1,59 +0,0 @@
-#include <linux/linkage.h>
-#include <asm/dwarf2.h>
-
-/*
- * Zero a page. 	
- * rdi	page
- */			
-	ALIGN
-clear_page_c:
-	CFI_STARTPROC
-	movl $4096/8,%ecx
-	xorl %eax,%eax
-	rep stosq
-	ret
-	CFI_ENDPROC
-ENDPROC(clear_page)
-
-ENTRY(clear_page)
-	CFI_STARTPROC
-	xorl   %eax,%eax
-	movl   $4096/64,%ecx
-	.p2align 4
-.Lloop:
-	decl	%ecx
-#define PUT(x) movq %rax,x*8(%rdi)
-	movq %rax,(%rdi)
-	PUT(1)
-	PUT(2)
-	PUT(3)
-	PUT(4)
-	PUT(5)
-	PUT(6)
-	PUT(7)
-	leaq	64(%rdi),%rdi
-	jnz	.Lloop
-	nop
-	ret
-	CFI_ENDPROC
-.Lclear_page_end:
-ENDPROC(clear_page)
-
-	/* Some CPUs run faster using the string instructions.
-	   It is also a lot simpler. Use this when possible */
-
-#include <asm/cpufeature.h>
-
-	.section .altinstr_replacement,"ax"
-1:	.byte 0xeb					/* jmp <disp8> */
-	.byte (clear_page_c - clear_page) - (2f - 1b)	/* offset */
-2:
-	.previous
-	.section .altinstructions,"a"
-	.align 8
-	.quad clear_page
-	.quad 1b
-	.byte X86_FEATURE_REP_GOOD
-	.byte .Lclear_page_end - clear_page
-	.byte 2b - 1b
-	.previous
diff --git a/arch/x86_64/lib/clear_page_64.S b/arch/x86_64/lib/clear_page_64.S
new file mode 100644
index 000000000000..9a10a78bb4a4
--- /dev/null
+++ b/arch/x86_64/lib/clear_page_64.S
@@ -0,0 +1,59 @@
+#include <linux/linkage.h>
+#include <asm/dwarf2.h>
+
+/*
+ * Zero a page. 	
+ * rdi	page
+ */			
+	ALIGN
+clear_page_c:
+	CFI_STARTPROC
+	movl $4096/8,%ecx
+	xorl %eax,%eax
+	rep stosq
+	ret
+	CFI_ENDPROC
+ENDPROC(clear_page)
+
+ENTRY(clear_page)
+	CFI_STARTPROC
+	xorl   %eax,%eax
+	movl   $4096/64,%ecx
+	.p2align 4
+.Lloop:
+	decl	%ecx
+#define PUT(x) movq %rax,x*8(%rdi)
+	movq %rax,(%rdi)
+	PUT(1)
+	PUT(2)
+	PUT(3)
+	PUT(4)
+	PUT(5)
+	PUT(6)
+	PUT(7)
+	leaq	64(%rdi),%rdi
+	jnz	.Lloop
+	nop
+	ret
+	CFI_ENDPROC
+.Lclear_page_end:
+ENDPROC(clear_page)
+
+	/* Some CPUs run faster using the string instructions.
+	   It is also a lot simpler. Use this when possible */
+
+#include <asm/cpufeature.h>
+
+	.section .altinstr_replacement,"ax"
+1:	.byte 0xeb					/* jmp <disp8> */
+	.byte (clear_page_c - clear_page) - (2f - 1b)	/* offset */
+2:
+	.previous
+	.section .altinstructions,"a"
+	.align 8
+	.quad clear_page
+	.quad 1b
+	.byte X86_FEATURE_REP_GOOD
+	.byte .Lclear_page_end - clear_page
+	.byte 2b - 1b
+	.previous