From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 11 Oct 2007 09:15:37 +0000 (+0200)
Subject: x86_64: prepare shared lib/rwlock.S
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=42421ce3468d46cd875acd3d87384528f9fe8a39;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

x86_64: prepare shared lib/rwlock.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 4611996706a3..d9d715d3ec9c 100644
--- a/arch/x86_64/lib/Makefile
+++ b/arch/x86_64/lib/Makefile
@@ -10,4 +10,4 @@ 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_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
+lib-y += memcpy.o memmove.o memset.o copy_user.o rwlock_64.o copy_user_nocache.o
diff --git a/arch/x86_64/lib/rwlock.S b/arch/x86_64/lib/rwlock.S
deleted file mode 100644
index 0cde1f807314..000000000000
--- a/arch/x86_64/lib/rwlock.S
+++ /dev/null
@@ -1,38 +0,0 @@
-/* Slow paths of read/write spinlocks. */
-
-#include <linux/linkage.h>
-#include <asm/rwlock.h>
-#include <asm/alternative-asm.i>
-#include <asm/dwarf2.h>
-
-/* rdi:	pointer to rwlock_t */
-ENTRY(__write_lock_failed)
-	CFI_STARTPROC
-	LOCK_PREFIX
-	addl $RW_LOCK_BIAS,(%rdi)
-1:	rep
-	nop
-	cmpl $RW_LOCK_BIAS,(%rdi)
-	jne 1b
-	LOCK_PREFIX
-	subl $RW_LOCK_BIAS,(%rdi)
-	jnz  __write_lock_failed
-	ret
-	CFI_ENDPROC
-END(__write_lock_failed)
-
-/* rdi:	pointer to rwlock_t */
-ENTRY(__read_lock_failed)
-	CFI_STARTPROC
-	LOCK_PREFIX
-	incl (%rdi)
-1:	rep
-	nop
-	cmpl $1,(%rdi)
-	js 1b
-	LOCK_PREFIX
-	decl (%rdi)
-	js __read_lock_failed
-	ret
-	CFI_ENDPROC
-END(__read_lock_failed)
diff --git a/arch/x86_64/lib/rwlock_64.S b/arch/x86_64/lib/rwlock_64.S
new file mode 100644
index 000000000000..0cde1f807314
--- /dev/null
+++ b/arch/x86_64/lib/rwlock_64.S
@@ -0,0 +1,38 @@
+/* Slow paths of read/write spinlocks. */
+
+#include <linux/linkage.h>
+#include <asm/rwlock.h>
+#include <asm/alternative-asm.i>
+#include <asm/dwarf2.h>
+
+/* rdi:	pointer to rwlock_t */
+ENTRY(__write_lock_failed)
+	CFI_STARTPROC
+	LOCK_PREFIX
+	addl $RW_LOCK_BIAS,(%rdi)
+1:	rep
+	nop
+	cmpl $RW_LOCK_BIAS,(%rdi)
+	jne 1b
+	LOCK_PREFIX
+	subl $RW_LOCK_BIAS,(%rdi)
+	jnz  __write_lock_failed
+	ret
+	CFI_ENDPROC
+END(__write_lock_failed)
+
+/* rdi:	pointer to rwlock_t */
+ENTRY(__read_lock_failed)
+	CFI_STARTPROC
+	LOCK_PREFIX
+	incl (%rdi)
+1:	rep
+	nop
+	cmpl $1,(%rdi)
+	js 1b
+	LOCK_PREFIX
+	decl (%rdi)
+	js __read_lock_failed
+	ret
+	CFI_ENDPROC
+END(__read_lock_failed)