add asm-generic/extable.h

Al Viro · Al Viro · commit aaa2e7ac80f6 · 2017-03-27T20:27:28.000-04:00
... and make the users of generic uaccess.h use that.

Signed-off-by: Al Viro &lt;viro@zeniv.linux.org.uk&gt;
diff --git a/arch/arc/include/asm/Kbuild b/arch/arc/include/asm/Kbuild
@@ -6,6 +6,7 @@ generic-y += device.h
 generic-y += div64.h
 generic-y += emergency-restart.h
 generic-y += errno.h
+generic-y += extable.h
 generic-y += fb.h
 generic-y += fcntl.h
 generic-y += ftrace.h
diff --git a/arch/arc/include/asm/uaccess.h b/arch/arc/include/asm/uaccess.h
@@ -750,6 +750,4 @@ extern long arc_strnlen_user_noinline(const char __user *src, long n);
 
 #include <asm-generic/uaccess.h>
 
-extern int fixup_exception(struct pt_regs *regs);
-
 #endif
diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild
@@ -12,6 +12,7 @@ generic-y += dma.h
 generic-y += emergency-restart.h
 generic-y += errno.h
 generic-y += exec.h
+generic-y += extable.h
 generic-y += fb.h
 generic-y += fcntl.h
 generic-y += futex.h
diff --git a/arch/h8300/include/asm/Kbuild b/arch/h8300/include/asm/Kbuild
@@ -13,6 +13,7 @@ generic-y += dma.h
 generic-y += emergency-restart.h
 generic-y += errno.h
 generic-y += exec.h
+generic-y += extable.h
 generic-y += fb.h
 generic-y += fcntl.h
 generic-y += ftrace.h
diff --git a/arch/hexagon/include/asm/Kbuild b/arch/hexagon/include/asm/Kbuild
@@ -11,6 +11,7 @@ generic-y += device.h
 generic-y += div64.h
 generic-y += emergency-restart.h
 generic-y += errno.h
+generic-y += extable.h
 generic-y += fb.h
 generic-y += fcntl.h
 generic-y += ftrace.h
diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild
@@ -6,6 +6,7 @@ generic-y += delay.h
 generic-y += device.h
 generic-y += emergency-restart.h
 generic-y += exec.h
+generic-y += extable.h
 generic-y += ftrace.h
 generic-y += futex.h
 generic-y += hardirq.h
diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild
@@ -10,6 +10,7 @@ generic-y += div64.h
 generic-y += emergency-restart.h
 generic-y += errno.h
 generic-y += exec.h
+generic-y += extable.h
 generic-y += fb.h
 generic-y += fcntl.h
 generic-y += ftrace.h
diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h
@@ -38,6 +38,4 @@ __strnlen_user(const char __user *s, long n);
 
 #include <asm-generic/uaccess.h>
 
-extern int fixup_exception(struct pt_regs *regs);
-
 #endif /* __UNICORE_UACCESS_H__ */
diff --git a/include/asm-generic/extable.h b/include/asm-generic/extable.h
@@ -0,0 +1,26 @@
+#ifndef __ASM_GENERIC_EXTABLE_H
+#define __ASM_GENERIC_EXTABLE_H
+
+/*
+ * The exception table consists of pairs of addresses: the first is the
+ * address of an instruction that is allowed to fault, and the second is
+ * the address at which the program should continue.  No registers are
+ * modified, so it is entirely up to the continuation code to figure out
+ * what to do.
+ *
+ * All the routines below use bits of fixup code that are out of line
+ * with the main instruction path.  This means when everything is well,
+ * we don't even have to jump over them.  Further, they do not intrude
+ * on our cache or tlb entries.
+ */
+
+struct exception_table_entry
+{
+	unsigned long insn, fixup;
+};
+
+
+struct pt_regs;
+extern int fixup_exception(struct pt_regs *regs);
+
+#endif
diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h
@@ -47,24 +47,6 @@ static inline int __access_ok(unsigned long addr, unsigned long size)
 }
 #endif
 
-/*
- * The exception table consists of pairs of addresses: the first is the
- * address of an instruction that is allowed to fault, and the second is
- * the address at which the program should continue.  No registers are
- * modified, so it is entirely up to the continuation code to figure out
- * what to do.
- *
- * All the routines below use bits of fixup code that are out of line
- * with the main instruction path.  This means when everything is well,
- * we don't even have to jump over them.  Further, they do not intrude
- * on our cache or tlb entries.
- */
-
-struct exception_table_entry
-{
-	unsigned long insn, fixup;
-};
-
 /*
  * architectures with an MMU should override these two
  */
@@ -344,4 +326,6 @@ clear_user(void __user *to, unsigned long n)
 	return __clear_user(to, n);
 }
 
+#include <asm/extable.h>
+
 #endif /* __ASM_GENERIC_UACCESS_H */
