[PATCH] Add noinline attribute

[Andi Kleen]

do_test_wp_bit cannot be inlined, otherwise the kernel doesn't boot
because the exception tables get reordered. 

Add a new noinline attribute to compiler.h and use it.

This patch is needed for the next unit-at-a-time patch. 

-Andi

diff -u linux-34/arch/i386/mm/init.c-o linux-34/arch/i386/mm/init.c
--- linux-34/arch/i386/mm/init.c-o	2004-01-09 09:27:09.000000000 +0100
+++ linux-34/arch/i386/mm/init.c	2004-01-13 22:19:19.000000000 +0100
@@ -555,7 +555,7 @@
  * This function cannot be __init, since exceptions don't work in that
  * section.  Put this after the callers, so that it cannot be inlined.
  */
-static int do_test_wp_bit(void)
+static int noinline do_test_wp_bit(void)
 {
 	char tmp_reg;
 	int flag;
diff -u linux-34/include/linux/compiler.h-o linux-34/include/linux/compiler.h
--- linux-34/include/linux/compiler.h-o	2003-11-24 04:46:36.000000000 +0100
+++ linux-34/include/linux/compiler.h	2004-01-13 22:17:26.000000000 +0100
@@ -76,6 +76,10 @@
 # define __attribute_pure__	/* unimplemented */
 #endif
 
+#ifndef noinline
+#define noinline
+#endif
+
 /* Optimization barrier */
 #ifndef barrier
 # define barrier() __memory_barrier()
diff -u linux-34/include/linux/compiler-gcc3.h-o linux-34/include/linux/compiler-gcc3.h
--- linux-34/include/linux/compiler-gcc3.h-o	2003-09-28 10:53:23.000000000 +0200
+++ linux-34/include/linux/compiler-gcc3.h	2004-01-13 22:36:22.000000000 +0100
@@ -20,3 +22,7 @@
 #endif
 
 #define __attribute_pure__	__attribute__((pure))
+
+#if __GNUC_MINOR__ >= 1
+#define  noinline __attribute__((noinline))
+#endif
-
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