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-rw-r--r--arch/arm64/mm/init.c65
1 files changed, 6 insertions, 59 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index f497ca77925a..67e8d7ce3fe7 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -197,14 +197,6 @@ void __init bootmem_init(void)
max_pfn = max_low_pfn = max;
}
-/*
- * Poison init memory with an undefined instruction (0x0).
- */
-static inline void poison_init_mem(void *s, size_t count)
-{
- memset(s, 0, count);
-}
-
#ifndef CONFIG_SPARSEMEM_VMEMMAP
static inline void free_memmap(unsigned long start_pfn, unsigned long end_pfn)
{
@@ -280,59 +272,17 @@ static void __init free_unused_memmap(void)
*/
void __init mem_init(void)
{
- unsigned long reserved_pages, free_pages;
- struct memblock_region *reg;
-
arm64_swiotlb_init();
max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map;
#ifndef CONFIG_SPARSEMEM_VMEMMAP
- /* this will put all unused low memory onto the freelists */
free_unused_memmap();
#endif
+ /* this will put all unused low memory onto the freelists */
+ free_all_bootmem();
- totalram_pages += free_all_bootmem();
-
- reserved_pages = free_pages = 0;
-
- for_each_memblock(memory, reg) {
- unsigned int pfn1, pfn2;
- struct page *page, *end;
-
- pfn1 = __phys_to_pfn(reg->base);
- pfn2 = pfn1 + __phys_to_pfn(reg->size);
-
- page = pfn_to_page(pfn1);
- end = pfn_to_page(pfn2 - 1) + 1;
-
- do {
- if (PageReserved(page))
- reserved_pages++;
- else if (!page_count(page))
- free_pages++;
- page++;
- } while (page < end);
- }
-
- /*
- * Since our memory may not be contiguous, calculate the real number
- * of pages we have in this system.
- */
- pr_info("Memory:");
- num_physpages = 0;
- for_each_memblock(memory, reg) {
- unsigned long pages = memblock_region_memory_end_pfn(reg) -
- memblock_region_memory_base_pfn(reg);
- num_physpages += pages;
- printk(" %ldMB", pages >> (20 - PAGE_SHIFT));
- }
- printk(" = %luMB total\n", num_physpages >> (20 - PAGE_SHIFT));
-
- pr_notice("Memory: %luk/%luk available, %luk reserved\n",
- nr_free_pages() << (PAGE_SHIFT-10),
- free_pages << (PAGE_SHIFT-10),
- reserved_pages << (PAGE_SHIFT-10));
+ mem_init_print_info(NULL);
#define MLK(b, t) b, t, ((t) - (b)) >> 10
#define MLM(b, t) b, t, ((t) - (b)) >> 20
@@ -374,7 +324,7 @@ void __init mem_init(void)
BUILD_BUG_ON(TASK_SIZE_64 > MODULES_VADDR);
BUG_ON(TASK_SIZE_64 > MODULES_VADDR);
- if (PAGE_SIZE >= 16384 && num_physpages <= 128) {
+ if (PAGE_SIZE >= 16384 && get_num_physpages() <= 128) {
extern int sysctl_overcommit_memory;
/*
* On a machine this small we won't get anywhere without
@@ -386,7 +336,6 @@ void __init mem_init(void)
void free_initmem(void)
{
- poison_init_mem(__init_begin, __init_end - __init_begin);
free_initmem_default(0);
}
@@ -396,10 +345,8 @@ static int keep_initrd;
void free_initrd_mem(unsigned long start, unsigned long end)
{
- if (!keep_initrd) {
- poison_init_mem((void *)start, PAGE_ALIGN(end) - start);
- free_reserved_area(start, end, 0, "initrd");
- }
+ if (!keep_initrd)
+ free_reserved_area((void *)start, (void *)end, 0, "initrd");
}
static int __init keepinitrd_setup(char *__unused)