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s390: unify linker symbols usage

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Common code defines linker symbols which denote sections start/end in
a form of char []. Referencing those symbols as _symbol or &_symbol
yields the same result, but "_symbol" form is more widespread across
newly written code. Convert s390 specific code to this style.

Also removes unused _text symbol definition in boot/compressed/misc.c.

Signed-off-by: Vasily Gorbik <gor@linux.vnet.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Vasily Gorbik 2018-02-20 13:28:33 +01:00 committed by Martin Schwidefsky
parent 3ad6b25013
commit 320d9555cb
5 changed files with 20 additions and 20 deletions
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10
arch/s390/boot/compressed/misc.c
View File

@ -27,8 +27,8 @@
/* Symbols defined by linker scripts */
extern char input_data[];
extern int input_len;
extern char _text, _end;
extern char _bss, _ebss;
extern char _end[];
extern char _bss[], _ebss[];
static void error(char *m);
@ -144,7 +144,7 @@ unsigned long decompress_kernel(void)
{
void *output, *kernel_end;
output = (void *) ALIGN((unsigned long) &_end + HEAP_SIZE, PAGE_SIZE);
output = (void *) ALIGN((unsigned long) _end + HEAP_SIZE, PAGE_SIZE);
kernel_end = output + SZ__bss_start;
check_ipl_parmblock((void *) 0, (unsigned long) kernel_end);
@ -166,8 +166,8 @@ unsigned long decompress_kernel(void)
* Clear bss section. free_mem_ptr and free_mem_end_ptr need to be
* initialized afterwards since they reside in bss.
*/
memset(&_bss, 0, &_ebss - &_bss);
free_mem_ptr = (unsigned long) &_end;
memset(_bss, 0, _ebss - _bss);
free_mem_ptr = (unsigned long) _end;
free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
__decompress(input_data, input_len, NULL, NULL, output, 0, NULL, error);

2
arch/s390/kernel/early.c
View File

@ -67,7 +67,7 @@ static noinline __init void init_kernel_storage_key(void)
#if PAGE_DEFAULT_KEY
unsigned long end_pfn, init_pfn;
end_pfn = PFN_UP(__pa(&_end));
end_pfn = PFN_UP(__pa(_end));
for (init_pfn = 0 ; init_pfn < end_pfn; init_pfn++)
page_set_storage_key(init_pfn << PAGE_SHIFT,

20
arch/s390/kernel/setup.c
View File

@ -413,12 +413,12 @@ static void __init setup_resources(void)
struct memblock_region *reg;
int j;
code_resource.start = (unsigned long) &_text;
code_resource.end = (unsigned long) &_etext - 1;
data_resource.start = (unsigned long) &_etext;
data_resource.end = (unsigned long) &_edata - 1;
bss_resource.start = (unsigned long) &__bss_start;
bss_resource.end = (unsigned long) &__bss_stop - 1;
code_resource.start = (unsigned long) _text;
code_resource.end = (unsigned long) _etext - 1;
data_resource.start = (unsigned long) _etext;
data_resource.end = (unsigned long) _edata - 1;
bss_resource.start = (unsigned long) __bss_start;
bss_resource.end = (unsigned long) __bss_stop - 1;
for_each_memblock(memory, reg) {
res = memblock_virt_alloc(sizeof(*res), 8);
@ -667,7 +667,7 @@ static void __init check_initrd(void)
*/
static void __init reserve_kernel(void)
{
unsigned long start_pfn = PFN_UP(__pa(&_end));
unsigned long start_pfn = PFN_UP(__pa(_end));
#ifdef CONFIG_DMA_API_DEBUG
/*
@ -888,9 +888,9 @@ void __init setup_arch(char **cmdline_p)
/* Is init_mm really needed? */
init_mm.start_code = PAGE_OFFSET;
init_mm.end_code = (unsigned long) &_etext;
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
init_mm.end_code = (unsigned long) _etext;
init_mm.end_data = (unsigned long) _edata;
init_mm.brk = (unsigned long) _end;
parse_early_param();
#ifdef CONFIG_CRASH_DUMP

4
arch/s390/kernel/suspend.c
View File

@ -153,8 +153,8 @@ int pfn_is_nosave(unsigned long pfn)
{
unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
unsigned long nosave_end_pfn = PFN_DOWN(__pa(&__nosave_end));
unsigned long end_rodata_pfn = PFN_DOWN(__pa(&__end_rodata)) - 1;
unsigned long stext_pfn = PFN_DOWN(__pa(&_stext));
unsigned long end_rodata_pfn = PFN_DOWN(__pa(__end_rodata)) - 1;
unsigned long stext_pfn = PFN_DOWN(__pa(_stext));
/* Always save lowcore pages (LC protection might be enabled). */
if (pfn <= LC_PAGES)

4
arch/s390/mm/dump_pagetables.c
View File

@ -24,8 +24,8 @@ enum address_markers_idx {
static struct addr_marker address_markers[] = {
[IDENTITY_NR] = {0, "Identity Mapping"},
[KERNEL_START_NR] = {(unsigned long)&_stext, "Kernel Image Start"},
[KERNEL_END_NR] = {(unsigned long)&_end, "Kernel Image End"},
[KERNEL_START_NR] = {(unsigned long)_stext, "Kernel Image Start"},
[KERNEL_END_NR] = {(unsigned long)_end, "Kernel Image End"},
[VMEMMAP_NR] = {0, "vmemmap Area"},
[VMALLOC_NR] = {0, "vmalloc Area"},
[MODULES_NR] = {0, "Modules Area"},