[ARM] use asm/sections.h

Update to use the asm/sections.h header rather than declaring these
symbols ourselves.  Change __data_start to _data to conform with the
naming found within asm/sections.h.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

8 files changed, 28 insertions, 27 deletions

diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index bde52df1c668..991952c644d1 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -18,7 +18,7 @@
 __switch_data:
         .long   __mmap_switched
         .long   __data_loc                      @ r4
-        .long   __data_start                    @ r5
+        .long   _data                           @ r5
         .long   __bss_start                     @ r6
         .long   _end                            @ r7
         .long   processor_id                    @ r4
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index b8d965dcd6fd..dab48f27263f 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -21,6 +21,7 @@
 #include <linux/string.h>
 
 #include <asm/pgtable.h>
+#include <asm/sections.h>
 
 #ifdef CONFIG_XIP_KERNEL
 /*
@@ -29,9 +30,8 @@
  * MODULES_VADDR is redefined here and not in asm/memory.h to avoid
  * recompiling the whole kernel when CONFIG_XIP_KERNEL is turned on/off.
  */
-extern void _etext;
 #undef MODULES_VADDR
-#define MODULES_VADDR   (((unsigned long)&_etext + ~PGDIR_MASK) & PGDIR_MASK)
+#define MODULES_VADDR   (((unsigned long)_etext + ~PGDIR_MASK) & PGDIR_MASK)
 #endif
 
 #ifdef CONFIG_MMU
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 4f6ae06d0855..7049815d66d5 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -29,6 +29,7 @@
 #include <asm/cputype.h>
 #include <asm/elf.h>
 #include <asm/procinfo.h>
+#include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/mach-types.h>
 #include <asm/cacheflush.h>
@@ -61,7 +62,6 @@ __setup("fpe=", fpe_setup);
 
 extern void paging_init(struct machine_desc *desc);
 extern void reboot_setup(char *str);
-extern void _text, _etext, __data_start, _edata, _end;
 
 unsigned int processor_id;
 EXPORT_SYMBOL(processor_id);
@@ -484,10 +484,10 @@ request_standard_resources(struct meminfo *mi, struct machine_desc *mdesc)
         struct resource *res;
         int i;
 
-        kernel_code.start   = virt_to_phys(&_text);
-        kernel_code.end     = virt_to_phys(&_etext - 1);
-        kernel_data.start   = virt_to_phys(&__data_start);
-        kernel_data.end     = virt_to_phys(&_end - 1);
+        kernel_code.start   = virt_to_phys(_text);
+        kernel_code.end     = virt_to_phys(_etext - 1);
+        kernel_data.start   = virt_to_phys(_data);
+        kernel_data.end     = virt_to_phys(_end - 1);
 
         for (i = 0; i < mi->nr_banks; i++) {
                 if (mi->bank[i].size == 0)
@@ -715,10 +715,10 @@ void __init setup_arch(char **cmdline_p)
                 parse_tags(tags);
         }
 
-        init_mm.start_code = (unsigned long) &_text;
-        init_mm.end_code   = (unsigned long) &_etext;
-        init_mm.end_data   = (unsigned long) &_edata;
-        init_mm.brk        = (unsigned long) &_end;
+        init_mm.start_code = (unsigned long) _text;
+        init_mm.end_code   = (unsigned long) _etext;
+        init_mm.end_data   = (unsigned long) _edata;
+        init_mm.brk        = (unsigned long) _end;
 
         memcpy(boot_command_line, from, COMMAND_LINE_SIZE);
         boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 4898bdcfe7dd..00216071eaf7 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -119,7 +119,7 @@ SECTIONS
 #endif
 
         .data : AT(__data_loc) {
-                __data_start = .;       /* address in memory */
+                _data = .;              /* address in memory */
 
                 /*
                  * first, the init task union, aligned
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index ab5c9abd5c34..34df4d9d03a6 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -17,6 +17,7 @@
 #include <linux/initrd.h>
 
 #include <asm/mach-types.h>
+#include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/sizes.h>
 #include <asm/tlb.h>
@@ -129,7 +130,7 @@ find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages)
 {
         unsigned int start_pfn, i, bootmap_pfn;
 
-        start_pfn   = PAGE_ALIGN(__pa(&_end)) >> PAGE_SHIFT;
+        start_pfn   = PAGE_ALIGN(__pa(_end)) >> PAGE_SHIFT;
         bootmap_pfn = 0;
 
         for_each_nodebank(i, mi, node) {
@@ -515,9 +516,9 @@ void __init mem_init(void)
         }
         printk(" = %luMB total\n", num_physpages >> (20 - PAGE_SHIFT));
 
-        codesize = &_etext - &_text;
-        datasize = &_end - &__data_start;
-        initsize = &__init_end - &__init_begin;
+        codesize = _etext - _text;
+        datasize = _end - _data;
+        initsize = __init_end - __init_begin;
 
         printk(KERN_NOTICE "Memory: %luKB available (%dK code, "
                 "%dK data, %dK init)\n",
@@ -538,8 +539,8 @@ void __init mem_init(void)
 void free_initmem(void)
 {
         if (!machine_is_integrator() && !machine_is_cintegrator())
-                totalram_pages += free_area(__phys_to_pfn(__pa(&__init_begin)),
-                                            __phys_to_pfn(__pa(&__init_end)),
+                totalram_pages += free_area(__phys_to_pfn(__pa(__init_begin)),
+                                            __phys_to_pfn(__pa(__init_end)),
                                             "init");
 }
 
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 94367bdbb5a8..95bbe112965e 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -34,5 +34,3 @@ struct pglist_data;
 void __init create_mapping(struct map_desc *md);
 void __init bootmem_init(void);
 void reserve_node_zero(struct pglist_data *pgdat);
-
-extern void _text, _stext, _etext, __data_start, _end, __init_begin, __init_end;
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index c0b9a78d7b87..2ab5f962a053 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -17,6 +17,7 @@
 
 #include <asm/cputype.h>
 #include <asm/mach-types.h>
+#include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/sizes.h>
 #include <asm/tlb.h>
@@ -730,7 +731,7 @@ static inline void prepare_page_table(void)
 
 #ifdef CONFIG_XIP_KERNEL
         /* The XIP kernel is mapped in the module area -- skip over it */
-        addr = ((unsigned long)&_etext + PGDIR_SIZE - 1) & PGDIR_MASK;
+        addr = ((unsigned long)_etext + PGDIR_SIZE - 1) & PGDIR_MASK;
 #endif
         for ( ; addr < PAGE_OFFSET; addr += PGDIR_SIZE)
                 pmd_clear(pmd_off_k(addr));
@@ -756,10 +757,10 @@ void __init reserve_node_zero(pg_data_t *pgdat)
          * Note that this can only be in node 0.
          */
 #ifdef CONFIG_XIP_KERNEL
-        reserve_bootmem_node(pgdat, __pa(&__data_start), &_end - &__data_start,
+        reserve_bootmem_node(pgdat, __pa(_data), _end - _data,
                         BOOTMEM_DEFAULT);
 #else
-        reserve_bootmem_node(pgdat, __pa(&_stext), &_end - &_stext,
+        reserve_bootmem_node(pgdat, __pa(_stext), _end - _stext,
                         BOOTMEM_DEFAULT);
 #endif
 
@@ -838,7 +839,7 @@ static void __init devicemaps_init(struct machine_desc *mdesc)
 #ifdef CONFIG_XIP_KERNEL
         map.pfn = __phys_to_pfn(CONFIG_XIP_PHYS_ADDR & SECTION_MASK);
         map.virtual = MODULES_VADDR;
-        map.length = ((unsigned long)&_etext - map.virtual + ~SECTION_MASK) & SECTION_MASK;
+        map.length = ((unsigned long)_etext - map.virtual + ~SECTION_MASK) & SECTION_MASK;
         map.type = MT_ROM;
         create_mapping(&map);
 #endif
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index c085f4e8248b..ad7bacc693b2 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -10,6 +10,7 @@
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
+#include <asm/sections.h>
 #include <asm/page.h>
 #include <asm/mach/arch.h>
 
@@ -25,10 +26,10 @@ void __init reserve_node_zero(pg_data_t *pgdat)
          * Note that this can only be in node 0.
          */
 #ifdef CONFIG_XIP_KERNEL
-        reserve_bootmem_node(pgdat, __pa(&__data_start), &_end - &__data_start,
+        reserve_bootmem_node(pgdat, __pa(_data), _end - _data,
                         BOOTMEM_DEFAULT);
 #else
-        reserve_bootmem_node(pgdat, __pa(&_stext), &_end - &_stext,
+        reserve_bootmem_node(pgdat, __pa(_stext), _end - _stext,
                         BOOTMEM_DEFAULT);
 #endif