x86, vmlinux.lds: unify percpu

32 bit:
- move __init_end outside the .bss output section
  It really did not belong in there

[ Impact: 64-bit: cleanup, 32-bit: refactor linker script ]

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Tim Abbott <tabbott@MIT.EDU>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1240991249-27117-12-git-send-email-sam@ravnborg.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/vmlinux.lds.S

@@ -330,6 +330,36 @@ SECTIONS
 	}
 #endif
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_SMP)
+	/*
+	 * percpu offsets are zero-based on SMP.  PERCPU_VADDR() changes the
+	 * output PHDR, so the next output section - __data_nosave - should
+	 * start another section data.init2.  Also, pda should be at the head of
+	 * percpu area.  Preallocate it and define the percpu offset symbol
+	 * so that it can be accessed as a percpu variable.
+	 */
+	. = ALIGN(PAGE_SIZE);
+	PERCPU_VADDR(0, :percpu)
+#else
+	PERCPU(PAGE_SIZE)
+#endif
+
+	. = ALIGN(PAGE_SIZE);
+	/* freed after init ends here */
+	__init_end = .;
+
+#ifdef CONFIG_X86_64
+	.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
+		. = ALIGN(PAGE_SIZE);
+		__nosave_begin = .;
+		*(.data.nosave)
+		. = ALIGN(PAGE_SIZE);
+		__nosave_end = .;
+	} :data.init2
+	/* use another section data.init2, see PERCPU_VADDR() above */
+#endif
+
+
 #ifdef CONFIG_X86_32
 # include "vmlinux_32.lds.S"
 #else

arch/x86/kernel/vmlinux_32.lds.S

@@ -1,11 +1,5 @@
-	PERCPU(PAGE_SIZE)
-
-	. = ALIGN(PAGE_SIZE);
-	/* freed after init ends here */
-
 	/* BSS */
 	.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
-		__init_end = .;
 		__bss_start = .;
 		*(.bss.page_aligned)
 		*(.bss)

arch/x86/kernel/vmlinux_64.lds.S

@@ -1,29 +1,3 @@
-#ifdef CONFIG_SMP
-	/*
-	 * percpu offsets are zero-based on SMP.  PERCPU_VADDR() changes the
-	 * output PHDR, so the next output section - __data_nosave - should
-	 * start another section data.init2.  Also, pda should be at the head of
-	 * percpu area.  Preallocate it and define the percpu offset symbol
-	 * so that it can be accessed as a percpu variable.
-	 */
-	. = ALIGN(PAGE_SIZE);
-	PERCPU_VADDR(0, :percpu)
-#else
-	PERCPU(PAGE_SIZE)
-#endif
-
-	. = ALIGN(PAGE_SIZE);
-	__init_end = .;
-
-	.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
-		. = ALIGN(PAGE_SIZE);
-		__nosave_begin = .;
-		*(.data.nosave)
-		. = ALIGN(PAGE_SIZE);
-		__nosave_end = .;
-	} :data.init2
-	/* use another section data.init2, see PERCPU_VADDR() above */
-
 	.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
 		. = ALIGN(PAGE_SIZE);
 		__bss_start = .;		/* BSS */