Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fix

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fix:
  mm/slab: fix section mismatch warning
  mm: fix section mismatch warnings
  init/main: use __init_refok to fix section mismatch
  kbuild: introduce __init_refok/__initdata_refok to supress section mismatch warnings
  all-archs: consolidate .data section definition in asm-generic
  all-archs: consolidate .text section definition in asm-generic
  kbuild: add "Section mismatch" warning whitelist for powerpc
  kbuild: make better section mismatch reports on i386, arm and mips
  kbuild: make modpost section warnings clearer
  kconfig: search harder for curses library in check-lxdialog.sh
  kbuild: include limits.h in sumversion.c for PATH_MAX
  powerpc: Fix the MODALIAS generation in modpost for of devices

arch/alpha/kernel/vmlinux.lds.S

@@ -15,7 +15,7 @@ SECTIONS
 
   _text = .;					/* Text and read-only data */
   .text : { 
-	*(.text) 
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	*(.fixup)
@@ -89,7 +89,7 @@ SECTIONS
 
   _data = .;
   .data : {					/* Data */
-	*(.data)
+	DATA_DATA
 	CONSTRUCTORS
   }
 

arch/arm/kernel/vmlinux.lds.S

@@ -90,7 +90,7 @@ SECTIONS
 			__exception_text_start = .;
 			*(.exception.text)
 			__exception_text_end = .;
-			*(.text)
+			TEXT_TEXT
 			SCHED_TEXT
 			LOCK_TEXT
 #ifdef CONFIG_MMU
@@ -158,7 +158,7 @@ SECTIONS
 		/*
 		 * and the usual data section
 		 */
-		*(.data)
+		DATA_DATA
 		CONSTRUCTORS
 
 		_edata = .;

arch/arm26/kernel/vmlinux-arm26-xip.lds.in

@@ -64,7 +64,7 @@ SECTIONS
 
 	.text : {			/* Real text segment		*/
 		_text = .;		/* Text and read-only data	*/
-			*(.text)
+			TEXT_TEXT
 			SCHED_TEXT
 			LOCK_TEXT       /* FIXME - borrowed from arm32 - check*/
 			*(.fixup)
@@ -111,7 +111,7 @@ SECTIONS
 		/*
 		 * and the usual data section
 		 */
-		*(.data)
+		DATA_DATA
 		CONSTRUCTORS
 
 		*(.init.data)

arch/arm26/kernel/vmlinux-arm26.lds.in

@@ -65,7 +65,7 @@ SECTIONS
 
 	.text : {			/* Real text segment		*/
 		_text = .;		/* Text and read-only data	*/
-			*(.text)
+			TEXT_TEXT
 			SCHED_TEXT
 			LOCK_TEXT
 			*(.fixup)
@@ -106,7 +106,7 @@ SECTIONS
 		/*
 		 * and the usual data section
 		 */
-		*(.data)
+		DATA_DATA
 		CONSTRUCTORS
 
 		_edata = .;

arch/avr32/kernel/vmlinux.lds.c

@@ -76,7 +76,7 @@ SECTIONS
 		. = 0x100;
 		*(.scall.text)
 		*(.irq.text)
-		*(.text)
+		TEXT_TEXT
 		SCHED_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
@@ -112,7 +112,7 @@ SECTIONS
 
 		/* And the rest... */
 		*(.data.rel*)
-		*(.data)
+		DATA_DATA
 		CONSTRUCTORS
 
 		_edata = .;

arch/blackfin/kernel/vmlinux.lds.S

@@ -54,7 +54,7 @@ SECTIONS
 	{
 		 _text = .;
 		 __stext = .;
-		*(.text)
+		TEXT_TEXT
 		SCHED_TEXT
 		*(.text.lock)
 		. = ALIGN(16);
@@ -200,7 +200,7 @@ SECTIONS
 		 __sdata = .;
 		. = ALIGN(0x2000);
 		*(.data.init_task)
-		*(.data)
+		DATA_DATA
 
 		. = ALIGN(32);
 		*(.data.cacheline_aligned)

arch/frv/kernel/vmlinux.lds.S

@@ -101,13 +101,14 @@ SECTIONS
   _stext = .;
   .text : {
 	*(
-		.text.start .text .text.*
+		.text.start .text.*
 #ifdef CONFIG_DEBUG_INFO
 	.init.text
 	.exit.text
 	.exitcall.exit
 #endif
 	)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	*(.fixup)
@@ -135,7 +136,8 @@ SECTIONS
 
   _sdata = .;
   .data : {			/* Data */
-	*(.data .data.*)
+	DATA_DATA
+	*(.data.*)
 	*(.exit.data)
 	CONSTRUCTORS
 	}

arch/h8300/kernel/vmlinux.lds.S

@@ -75,7 +75,7 @@ SECTIONS
 	*(.int_redirect)
 #endif
 	__stext = . ;
-        	*(.text)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	__etext = . ;
@@ -103,7 +103,7 @@ SECTIONS
 	. = ALIGN(0x2000) ;
 		*(.data.init_task)
 	. = ALIGN(0x4) ;
-		*(.data)
+		DATA_DATA
 	. = ALIGN(0x4) ;
 		*(.data.*)	
 

arch/i386/kernel/vmlinux.lds.S

@@ -44,7 +44,7 @@ SECTIONS
 
   /* read-only */
   .text : AT(ADDR(.text) - LOAD_OFFSET) {
-	*(.text)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	KPROBES_TEXT
@@ -74,7 +74,7 @@ SECTIONS
   /* writeable */
   . = ALIGN(4096);
   .data : AT(ADDR(.data) - LOAD_OFFSET) {	/* Data */
-	*(.data)
+	DATA_DATA
 	CONSTRUCTORS
 	} :data
 

arch/ia64/kernel/vmlinux.lds.S

@@ -44,7 +44,7 @@ SECTIONS
   .text : AT(ADDR(.text) - LOAD_OFFSET)
     {
 	IVT_TEXT
-	*(.text)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	KPROBES_TEXT
@@ -214,7 +214,12 @@ SECTIONS
 
   data : { } :data
   .data : AT(ADDR(.data) - LOAD_OFFSET)
-	{ *(.data) *(.data1) *(.gnu.linkonce.d*) CONSTRUCTORS }
+	{
+		DATA_DATA
+		*(.data1)
+		*(.gnu.linkonce.d*)
+		CONSTRUCTORS
+	}
 
   . = ALIGN(16);	/* gp must be 16-byte aligned for exc. table */
   .got : AT(ADDR(.got) - LOAD_OFFSET)

arch/m32r/kernel/vmlinux.lds.S

@@ -27,7 +27,7 @@ SECTIONS
   _text = .;			/* Text and read-only data */
   .boot : { *(.boot) } = 0
   .text : {
-	*(.text)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	*(.fixup)
@@ -50,7 +50,7 @@ SECTIONS
   .data : {			/* Data */
 	*(.spu)
 	*(.spi)
-	*(.data)
+	DATA_DATA
 	CONSTRUCTORS
 	}
 

arch/m68k/kernel/vmlinux-std.lds

@@ -11,7 +11,7 @@ SECTIONS
   . = 0x1000;
   _text = .;			/* Text and read-only data */
   .text : {
-	*(.text)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	*(.fixup)
@@ -28,7 +28,7 @@ SECTIONS
   _etext = .;			/* End of text section */
 
   .data : {			/* Data */
-	*(.data)
+	DATA_DATA
 	CONSTRUCTORS
 	}
 

arch/m68k/kernel/vmlinux-sun3.lds

@@ -12,7 +12,7 @@ SECTIONS
   _text = .;			/* Text and read-only data */
   .text : {
 	*(.head)
-	*(.text)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	*(.fixup)
@@ -23,7 +23,7 @@ SECTIONS
   _etext = .;			/* End of text section */
 
   .data : {			/* Data */
-	*(.data)
+	DATA_DATA
 	CONSTRUCTORS
 	. = ALIGN(16);		/* Exception table */
 	__start___ex_table = .;

arch/m68knommu/kernel/vmlinux.lds.S

@@ -62,7 +62,7 @@ SECTIONS {
 	.text : {
 		_text = .;
 		_stext = . ;
-        	*(.text)
+		TEXT_TEXT
 		SCHED_TEXT
         	*(.text.lock)
 
@@ -133,7 +133,7 @@ SECTIONS {
 	.data DATA_ADDR : {
 		. = ALIGN(4);
 		_sdata = . ;
-		*(.data)
+		DATA_DATA
 		. = ALIGN(8192) ;
 		*(.data.init_task)
 		_edata = . ;

arch/mips/kernel/vmlinux.lds.S

@@ -27,7 +27,7 @@ SECTIONS
   /* read-only */
   _text = .;			/* Text and read-only data */
   .text : {
-    *(.text)
+    TEXT_TEXT
     SCHED_TEXT
     LOCK_TEXT
     *(.fixup)
@@ -62,7 +62,7 @@ SECTIONS
     . = ALIGN(_PAGE_SIZE);
     *(.data.init_task)
 
-    *(.data)
+    DATA_DATA
 
     CONSTRUCTORS
   }

arch/parisc/kernel/vmlinux.lds.S

@@ -51,7 +51,7 @@ SECTIONS
 
   _text = .;			/* Text and read-only data */
   .text ALIGN(16) : {
-	*(.text)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	*(.text.do_softirq)
@@ -91,7 +91,7 @@ SECTIONS
 
   . = ALIGN(L1_CACHE_BYTES);
   .data : {			/* Data */
-	*(.data)
+	DATA_DATA
 	CONSTRUCTORS
 	}
 

arch/powerpc/kernel/vmlinux.lds.S

@@ -34,7 +34,8 @@ SECTIONS
 	/* Text and gots */
 	.text : {
 		_text = .;
-		*(.text .text.*)
+		*(.text.*)
+		TEXT_TEXT
 		SCHED_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
@@ -167,7 +168,7 @@ SECTIONS
 #ifdef CONFIG_PPC32
 	.data    :
 	{
-		*(.data)
+		DATA_DATA
 		*(.sdata)
 		*(.got.plt) *(.got)
 	}

arch/ppc/kernel/vmlinux.lds.S

@@ -32,7 +32,7 @@ SECTIONS
   .text      :
   {
     _text = .;
-    *(.text)
+    TEXT_TEXT
     SCHED_TEXT
     LOCK_TEXT
     *(.fixup)
@@ -67,7 +67,7 @@ SECTIONS
   . = ALIGN(4096);
   .data    :
   {
-    *(.data)
+    DATA_DATA
     *(.data1)
     *(.sdata)
     *(.sdata2)

arch/s390/kernel/vmlinux.lds.S

@@ -21,7 +21,7 @@ SECTIONS
   . = 0x00000000;
   _text = .;			/* Text and read-only data */
   .text : {
-	*(.text)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	KPROBES_TEXT
@@ -48,7 +48,7 @@ SECTIONS
   BUG_TABLE
 
   .data : {			/* Data */
-	*(.data)
+	DATA_DATA
 	CONSTRUCTORS
 	}
 

arch/sh/kernel/vmlinux.lds.S

@@ -22,7 +22,7 @@ SECTIONS
 	*(.empty_zero_page)
 	} = 0
   .text : {
-	*(.text)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	*(.fixup)
@@ -41,7 +41,7 @@ SECTIONS
   BUG_TABLE
 
   .data : {			/* Data */
-	*(.data)
+	DATA_DATA
 
  	 /* Align the initial ramdisk image (INITRD) on page boundaries. */
  	 . = ALIGN(PAGE_SIZE);

arch/sh64/kernel/vmlinux.lds.S

@@ -54,7 +54,7 @@ SECTIONS
 	} = 0
 
   .text : C_PHYS(.text) {
-	*(.text)
+	TEXT_TEXT
 	*(.text64)
         *(.text..SHmedia32)
 	SCHED_TEXT
@@ -78,7 +78,7 @@ SECTIONS
   _etext = .;			/* End of text section */
 
   .data : C_PHYS(.data) {			/* Data */
-	*(.data)
+	DATA_DATA
 	CONSTRUCTORS
 	}
 

arch/sparc/kernel/vmlinux.lds.S

@@ -12,7 +12,7 @@ SECTIONS
   .text 0xf0004000 :
   {
     _text = .;
-    *(.text)
+    TEXT_TEXT
     SCHED_TEXT
     LOCK_TEXT
     *(.gnu.warning)
@@ -22,7 +22,7 @@ SECTIONS
   RODATA
   .data    :
   {
-    *(.data)
+    DATA_DATA
     CONSTRUCTORS
   }
   .data1   : { *(.data1) }

arch/sparc64/kernel/vmlinux.lds.S

@@ -14,7 +14,7 @@ SECTIONS
   .text 0x0000000000404000 :
   {
     _text = .;
-    *(.text)
+    TEXT_TEXT
     SCHED_TEXT
     LOCK_TEXT
     KPROBES_TEXT
@@ -27,7 +27,7 @@ SECTIONS
 
   .data    :
   {
-    *(.data)
+    DATA_DATA
     CONSTRUCTORS
   }
   .data1   : { *(.data1) }

arch/um/kernel/dyn.lds.S

@@ -62,7 +62,7 @@ SECTIONS
   } =0x90909090
   .plt            : { *(.plt) }
   .text           : {
-    *(.text)
+    TEXT_TEXT
     SCHED_TEXT
     LOCK_TEXT
     *(.fixup)
@@ -99,7 +99,8 @@ SECTIONS
     *(.data.init_task)
     . = ALIGN(KERNEL_STACK_SIZE);
     *(.data.init_irqstack)
-    *(.data .data.* .gnu.linkonce.d.*)
+    DATA_DATA
+    *(.data.* .gnu.linkonce.d.*)
     SORT(CONSTRUCTORS)
   }
   .data1          : { *(.data1) }

arch/um/kernel/uml.lds.S

@@ -37,7 +37,7 @@ SECTIONS
 
   .text      :
   {
-    *(.text)
+    TEXT_TEXT
     SCHED_TEXT
     LOCK_TEXT
     *(.fixup)
@@ -61,7 +61,7 @@ SECTIONS
     *(.data.init_task)
     . = ALIGN(KERNEL_STACK_SIZE);
     *(.data.init_irqstack)
-    *(.data)
+    DATA_DATA
     *(.gnu.linkonce.d*)
     CONSTRUCTORS
   }

arch/v850/kernel/vmlinux.lds.S

@@ -92,7 +92,7 @@
 #define TEXT_CONTENTS							      \
 		_text = .;						      \
 		__stext = . ;						      \
-        	*(.text)						      \
+		TEXT_TEXT						      \
 		SCHED_TEXT						      \
 			*(.exit.text)	/* 2.5 convention */		      \
 			*(.text.exit)	/* 2.4 convention */		      \
@@ -113,7 +113,7 @@
 /* Kernel data segment.  */
 #define DATA_CONTENTS							      \
 		__sdata = . ;						      \
-        	*(.data)						      \
+		DATA_DATA						      \
 			*(.exit.data)	/* 2.5 convention */		      \
 			*(.data.exit)	/* 2.4 convention */		      \
 		. = ALIGN (16) ;					      \

arch/x86_64/kernel/vmlinux.lds.S

@@ -31,7 +31,7 @@ SECTIONS
 	*(.bootstrap.text)
 	_stext = .;
 	/* Then the rest */
-	*(.text)
+	TEXT_TEXT
 	SCHED_TEXT
 	LOCK_TEXT
 	KPROBES_TEXT
@@ -55,7 +55,7 @@ SECTIONS
   . = ALIGN(PAGE_SIZE);        /* Align data segment to page size boundary */
 				/* Data */
   .data : AT(ADDR(.data) - LOAD_OFFSET) {
-	*(.data)
+	DATA_DATA
 	CONSTRUCTORS
 	} :data
 

arch/xtensa/kernel/vmlinux.lds.S

@@ -84,7 +84,8 @@ SECTIONS
   {
     /* The .head.text section must be the first section! */
     *(.head.text)
-    *(.literal .text)
+    *(.literal)
+    TEXT_TEXT
     *(.srom.text)
     VMLINUX_SYMBOL(__sched_text_start) = .;
     *(.sched.literal .sched.text)
@@ -144,7 +145,8 @@ SECTIONS
   _fdata = .;
   .data :
   {
-    *(.data) CONSTRUCTORS
+    DATA_DATA
+    CONSTRUCTORS
     . = ALIGN(XCHAL_ICACHE_LINESIZE);
     *(.data.cacheline_aligned)
   }

include/asm-generic/vmlinux.lds.h

@@ -9,6 +9,11 @@
 /* Align . to a 8 byte boundary equals to maximum function alignment. */
 #define ALIGN_FUNCTION()  . = ALIGN(8)
 
+/* .data section */
+#define DATA_DATA							\
+	*(.data)							\
+	*(.data.init.refok)
+
 #define RODATA								\
 	. = ALIGN(4096);						\
 	.rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {		\
@@ -139,6 +144,13 @@
 		VMLINUX_SYMBOL(__security_initcall_end) = .;		\
 	}
 
+/* .text section. Map to function alignment to avoid address changes
+ * during second ld run in second ld pass when generating System.map */
+#define TEXT_TEXT							\
+		ALIGN_FUNCTION();					\
+		*(.text)						\
+		*(.text.init.refok)
+
 /* sched.text is aling to function alignment to secure we have same
  * address even at second ld pass when generating System.map */
 #define SCHED_TEXT							\

include/linux/init.h

@@ -45,6 +45,19 @@
 #define __exitdata	__attribute__ ((__section__(".exit.data")))
 #define __exit_call	__attribute_used__ __attribute__ ((__section__ (".exitcall.exit")))
 
+/* modpost check for section mismatches during the kernel build.
+ * A section mismatch happens when there are references from a
+ * code or data section to an init section (both code or data).
+ * The init sections are (for most archs) discarded by the kernel
+ * when early init has completed so all such references are potential bugs.
+ * For exit sections the same issue exists.
+ * The following markers are used for the cases where the reference to
+ * the init/exit section (code or data) is valid and will teach modpost
+ * not to issue a warning.
+ * The markers follow same syntax rules as __init / __initdata. */
+#define __init_refok     noinline __attribute__ ((__section__ (".text.init.refok")))
+#define __initdata_refok          __attribute__ ((__section__ (".data.init.refok")))
+
 #ifdef MODULE
 #define __exit		__attribute__ ((__section__(".exit.text")))
 #else

init/main.c

@@ -423,7 +423,7 @@ static void __init setup_command_line(char *command_line)
  * gcc-3.4 accidentally inlines this function, so use noinline.
  */
 
-static void noinline rest_init(void)
+static void noinline __init_refok rest_init(void)
 	__releases(kernel_lock)
 {
 	int pid;

mm/page_alloc.c

@@ -2165,7 +2165,7 @@ void __init setup_per_cpu_pageset(void)
 
 #endif
 
-static __meminit noinline
+static noinline __init_refok
 int zone_wait_table_init(struct zone *zone, unsigned long zone_size_pages)
 {
 	int i;
@@ -2678,7 +2678,7 @@ static void __meminit free_area_init_core(struct pglist_data *pgdat,
 	}
 }
 
-static void __meminit alloc_node_mem_map(struct pglist_data *pgdat)
+static void __init_refok alloc_node_mem_map(struct pglist_data *pgdat)
 {
 	/* Skip empty nodes */
 	if (!pgdat->node_spanned_pages)

mm/slab.c

@@ -2037,7 +2037,7 @@ static size_t calculate_slab_order(struct kmem_cache *cachep,
 	return left_over;
 }
 
-static int setup_cpu_cache(struct kmem_cache *cachep)
+static int __init_refok setup_cpu_cache(struct kmem_cache *cachep)
 {
 	if (g_cpucache_up == FULL)
 		return enable_cpucache(cachep);

mm/sparse.c

@@ -44,7 +44,7 @@ EXPORT_SYMBOL(page_to_nid);
 #endif
 
 #ifdef CONFIG_SPARSEMEM_EXTREME
-static struct mem_section noinline *sparse_index_alloc(int nid)
+static struct mem_section noinline __init_refok *sparse_index_alloc(int nid)
 {
 	struct mem_section *section = NULL;
 	unsigned long array_size = SECTIONS_PER_ROOT *

scripts/kconfig/lxdialog/check-lxdialog.sh

@@ -4,21 +4,15 @@
 # What library to link
 ldflags()
 {
-	$cc -print-file-name=libncursesw.so | grep -q /
+	for ext in so a dylib ; do
+		for lib in ncursesw ncurses curses ; do
+			$cc -print-file-name=lib${lib}.${ext} | grep -q /
 			if [ $? -eq 0 ]; then
-		echo '-lncursesw'
-		exit
-	fi
-	$cc -print-file-name=libncurses.so | grep -q /
-	if [ $? -eq 0 ]; then
-		echo '-lncurses'
-		exit
-	fi
-	$cc -print-file-name=libcurses.so | grep -q /
-	if [ $? -eq 0 ]; then
-		echo '-lcurses'
+				echo "-l${lib}"
 				exit
 			fi
+		done
+	done
 	exit 1
 }
 

scripts/mod/file2alias.c

@@ -353,11 +353,16 @@ static int do_pcmcia_entry(const char *filename,
 
 static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
 {
+    int len;
     char *tmp;
-    sprintf (alias, "of:N%sT%sC%s",
+    len = sprintf (alias, "of:N%sT%s",
                     of->name[0] ? of->name : "*",
-                    of->type[0] ? of->type : "*",
-                    of->compatible[0] ? of->compatible : "*");
+                    of->type[0] ? of->type : "*");
+
+    if (of->compatible[0])
+        sprintf (&alias[len], "%sC%s",
+                     of->type[0] ? "*" : "",
+                     of->compatible);
 
     /* Replace all whitespace with underscores */
     for (tmp = alias; tmp && *tmp; tmp++)

scripts/mod/modpost.c

@@ -384,6 +384,7 @@ static int parse_elf(struct elf_info *info, const char *filename)
 		sechdrs[i].sh_size   = TO_NATIVE(sechdrs[i].sh_size);
 		sechdrs[i].sh_link   = TO_NATIVE(sechdrs[i].sh_link);
 		sechdrs[i].sh_name   = TO_NATIVE(sechdrs[i].sh_name);
+		sechdrs[i].sh_info   = TO_NATIVE(sechdrs[i].sh_info);
 	}
 	/* Find symbol table. */
 	for (i = 1; i < hdr->e_shnum; i++) {
@@ -582,6 +583,12 @@ static int strrcmp(const char *s, const char *sub)
 
 /**
  * Whitelist to allow certain references to pass with no warning.
+ *
+ * Pattern 0:
+ *   Do not warn if funtion/data are marked with __init_refok/__initdata_refok.
+ *   The pattern is identified by:
+ *   fromsec = .text.init.refok | .data.init.refok
+ *
  * Pattern 1:
  *   If a module parameter is declared __initdata and permissions=0
  *   then this is legal despite the warning generated.
@@ -619,14 +626,6 @@ static int strrcmp(const char *s, const char *sub)
  *   This pattern is identified by
  *   refsymname = __init_begin, _sinittext, _einittext
  *
- * Pattern 6:
- *   During the early init phase we have references from .init.text to
- *   .text we have an intended section mismatch - do not warn about it.
- *   See kernel_init() in init/main.c
- *   tosec   = .init.text
- *   fromsec = .text
- *   atsym = kernel_init
- *
  * Pattern 7:
  *  Logos used in drivers/video/logo reside in __initdata but the
  *  funtion that references them are EXPORT_SYMBOL() so cannot be
@@ -642,16 +641,11 @@ static int strrcmp(const char *s, const char *sub)
  *  tosec   = .init.text
  *  fromsec  = .paravirtprobe
  *
- * Pattern 9:
- *  Some of functions are common code between boot time and hotplug
- *  time. The bootmem allocater is called only boot time in its
- *  functions. So it's ok to reference.
- *  tosec    = .init.text
- *
  * Pattern 10:
- *  ia64 has machvec table for each platform. It is mixture of function
- *  pointer of .init.text and .text.
- *  fromsec  = .machvec
+ *  ia64 has machvec table for each platform and
+ *  powerpc has a machine desc table for each platform.
+ *  It is mixture of function pointers of .init.text and .text.
+ *  fromsec  = .machvec | .machine.desc
  **/
 static int secref_whitelist(const char *modname, const char *tosec,
 			    const char *fromsec, const char *atsym,
@@ -678,11 +672,10 @@ static int secref_whitelist(const char *modname, const char *tosec,
 		NULL
 	};
 
-	const char *pat4sym[] = {
-		"sparse_index_alloc",
-		"zone_wait_table_init",
-		NULL
-	};
+	/* Check for pattern 0 */
+	if ((strcmp(fromsec, ".text.init.refok") == 0) ||
+	    (strcmp(fromsec, ".data.init.refok") == 0))
+		return 1;
 
 	/* Check for pattern 1 */
 	if (strcmp(tosec, ".init.data") != 0)
@@ -725,12 +718,6 @@ static int secref_whitelist(const char *modname, const char *tosec,
 		if (strcmp(refsymname, *s) == 0)
 			return 1;
 
-	/* Check for pattern 6 */
-	if ((strcmp(tosec, ".init.text") == 0) &&
-	    (strcmp(fromsec, ".text") == 0) &&
-	    (strcmp(refsymname, "kernel_init") == 0))
-		return 1;
-
 	/* Check for pattern 7 */
 	if ((strcmp(tosec, ".init.data") == 0) &&
 	    (strncmp(fromsec, ".text", strlen(".text")) == 0) &&
@@ -742,15 +729,9 @@ static int secref_whitelist(const char *modname, const char *tosec,
 	    (strcmp(fromsec, ".paravirtprobe") == 0))
 		return 1;
 
-	/* Check for pattern 9 */
-	if ((strcmp(tosec, ".init.text") == 0) &&
-	    (strcmp(fromsec, ".text") == 0))
-		for (s = pat4sym; *s; s++)
-			if (strcmp(atsym, *s) == 0)
-				return 1;
-
 	/* Check for pattern 10 */
-	if (strcmp(fromsec, ".machvec") == 0)
+	if ((strcmp(fromsec, ".machvec") == 0) ||
+	    (strcmp(fromsec, ".machine.desc") == 0))
 		return 1;
 
 	return 0;
@@ -773,6 +754,8 @@ static Elf_Sym *find_elf_symbol(struct elf_info *elf, Elf_Addr addr,
 	for (sym = elf->symtab_start; sym < elf->symtab_stop; sym++) {
 		if (sym->st_shndx != relsym->st_shndx)
 			continue;
+		if (ELF_ST_TYPE(sym->st_info) == STT_SECTION)
+			continue;
 		if (sym->st_value == addr)
 			return sym;
 	}
@@ -884,33 +867,99 @@ static void warn_sec_mismatch(const char *modname, const char *fromsec,
 			     elf->strtab + before->st_name, refsymname))
 		return;
 
+	/* fromsec whitelist - without a valid 'before'
+	 * powerpc has a GOT table in .got2 section */
+	if (strcmp(fromsec, ".got2") == 0)
+		return;
+
 	if (before && after) {
-		warn("%s - Section mismatch: reference to %s:%s from %s "
-		     "between '%s' (at offset 0x%llx) and '%s'\n",
-		     modname, secname, refsymname, fromsec,
+		warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s "
+		     "(between '%s' and '%s')\n",
+		     modname, fromsec, (unsigned long long)r.r_offset,
+		     secname, refsymname,
 		     elf->strtab + before->st_name,
-		     (long long)r.r_offset,
 		     elf->strtab + after->st_name);
 	} else if (before) {
-		warn("%s - Section mismatch: reference to %s:%s from %s "
-		     "after '%s' (at offset 0x%llx)\n",
-		     modname, secname, refsymname, fromsec,
-		     elf->strtab + before->st_name,
-		     (long long)r.r_offset);
+		warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s "
+		     "(after '%s')\n",
+		     modname, fromsec, (unsigned long long)r.r_offset,
+		     secname, refsymname,
+		     elf->strtab + before->st_name);
 	} else if (after) {
-		warn("%s - Section mismatch: reference to %s:%s from %s "
+		warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s "
 		     "before '%s' (at offset -0x%llx)\n",
-		     modname, secname, refsymname, fromsec,
-		     elf->strtab + after->st_name,
-		     (long long)r.r_offset);
+		     modname, fromsec, (unsigned long long)r.r_offset,
+		     secname, refsymname,
+		     elf->strtab + after->st_name);
 	} else {
-		warn("%s - Section mismatch: reference to %s:%s from %s "
-		     "(offset 0x%llx)\n",
-		     modname, secname, fromsec, refsymname,
-		     (long long)r.r_offset);
+		warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s\n",
+		     modname, fromsec, (unsigned long long)r.r_offset,
+		     secname, refsymname);
 	}
 }
 
+static void addend_386_rel(struct elf_info *elf, int section, Elf_Rela *r)
+{
+	Elf_Shdr *sechdrs = elf->sechdrs;
+	unsigned int r_typ;
+	unsigned int *location;
+
+	r_typ = ELF_R_TYPE(r->r_info);
+	location = (void *)elf->hdr +
+		sechdrs[sechdrs[section].sh_info].sh_offset + r->r_offset;
+	switch (r_typ) {
+	case R_386_32:
+		r->r_addend = TO_NATIVE(*location);
+		break;
+	case R_386_PC32:
+		r->r_addend = TO_NATIVE(*location) + 4;
+		break;
+	}
+}
+
+static void addend_arm_rel(struct elf_info *elf, int section, Elf_Rela *r)
+{
+	Elf_Shdr *sechdrs = elf->sechdrs;
+	unsigned int r_typ;
+	unsigned int *location;
+
+	r_typ = ELF_R_TYPE(r->r_info);
+	location = (void *)elf->hdr +
+		sechdrs[sechdrs[section].sh_info].sh_offset + r->r_offset;
+	switch (r_typ) {
+	case R_ARM_ABS32:
+		r->r_addend = TO_NATIVE(*location);
+		break;
+	case R_ARM_PC24:
+		r->r_addend = ((TO_NATIVE(*location) & 0x00ffffff) << 2) + 8;
+		break;
+	}
+}
+
+static int addend_mips_rel(struct elf_info *elf, int section, Elf_Rela *r)
+{
+	Elf_Shdr *sechdrs = elf->sechdrs;
+	unsigned int r_typ;
+	unsigned int *location;
+	unsigned int inst;
+
+	r_typ = ELF_R_TYPE(r->r_info);
+	if (r_typ == R_MIPS_HI16)
+		return 1;	/* skip this */
+	location = (void *)elf->hdr +
+		sechdrs[sechdrs[section].sh_info].sh_offset + r->r_offset;
+	inst = TO_NATIVE(*location);
+	switch (r_typ) {
+	case R_MIPS_LO16:
+		r->r_addend = ((inst & 0xffff) ^ 0x8000) - 0x8000;
+		break;
+	case R_MIPS_26:
+		r->r_addend = (inst & 0x03ffffff) << 2;
+		break;
+	}
+	return 0;
+}
+
 /**
  * A module includes a number of sections that are discarded
  * either when loaded or when used as built-in.
@@ -954,8 +1003,11 @@ static void check_sec_ref(struct module *mod, const char *modname,
 				r.r_offset = TO_NATIVE(rela->r_offset);
 #if KERNEL_ELFCLASS == ELFCLASS64
 				if (hdr->e_machine == EM_MIPS) {
+					unsigned int r_typ;
 					r_sym = ELF64_MIPS_R_SYM(rela->r_info);
 					r_sym = TO_NATIVE(r_sym);
+					r_typ = ELF64_MIPS_R_TYPE(rela->r_info);
+					r.r_info = ELF64_R_INFO(r_sym, r_typ);
 				} else {
 					r.r_info = TO_NATIVE(rela->r_info);
 					r_sym = ELF_R_SYM(r.r_info);
@@ -988,8 +1040,11 @@ static void check_sec_ref(struct module *mod, const char *modname,
 				r.r_offset = TO_NATIVE(rel->r_offset);
 #if KERNEL_ELFCLASS == ELFCLASS64
 				if (hdr->e_machine == EM_MIPS) {
+					unsigned int r_typ;
 					r_sym = ELF64_MIPS_R_SYM(rel->r_info);
 					r_sym = TO_NATIVE(r_sym);
+					r_typ = ELF64_MIPS_R_TYPE(rel->r_info);
+					r.r_info = ELF64_R_INFO(r_sym, r_typ);
 				} else {
 					r.r_info = TO_NATIVE(rel->r_info);
 					r_sym = ELF_R_SYM(r.r_info);
@@ -999,6 +1054,14 @@ static void check_sec_ref(struct module *mod, const char *modname,
 				r_sym = ELF_R_SYM(r.r_info);
 #endif
 				r.r_addend = 0;
+				if (hdr->e_machine == EM_386)
+					addend_386_rel(elf, i, &r);
+				else if (hdr->e_machine == EM_ARM)
+					addend_arm_rel(elf, i, &r);
+				else if (hdr->e_machine == EM_MIPS) {
+					if (addend_mips_rel(elf, i, &r))
+						continue;
+				}
 				sym = elf->symtab_start + r_sym;
 				/* Skip special sections */
 				if (sym->st_shndx >= SHN_LORESERVE)

scripts/mod/modpost.h

@@ -60,6 +60,9 @@ typedef union
 #define ELF64_MIPS_R_SYM(i) \
   ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym)
 
+#define ELF64_MIPS_R_TYPE(i) \
+  ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_type1)
+
 #if KERNEL_ELFDATA != HOST_ELFDATA
 
 static inline void __endian(const void *src, void *dest, unsigned int size)

scripts/mod/sumversion.c

@@ -7,6 +7,7 @@
 #include <ctype.h>
 #include <errno.h>
 #include <string.h>
+#include <limits.h>
 #include "modpost.h"
 
 /*