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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/arm/mm/init.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mm/init.c')
-rw-r--r-- | ANDROID_3.4.5/arch/arm/mm/init.c | 775 |
1 files changed, 0 insertions, 775 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mm/init.c b/ANDROID_3.4.5/arch/arm/mm/init.c deleted file mode 100644 index b7f9a479..00000000 --- a/ANDROID_3.4.5/arch/arm/mm/init.c +++ /dev/null @@ -1,775 +0,0 @@ -/* - * linux/arch/arm/mm/init.c - * - * Copyright (C) 1995-2005 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/swap.h> -#include <linux/init.h> -#include <linux/bootmem.h> -#include <linux/mman.h> -#include <linux/export.h> -#include <linux/nodemask.h> -#include <linux/initrd.h> -#include <linux/of_fdt.h> -#include <linux/highmem.h> -#include <linux/gfp.h> -#include <linux/memblock.h> -#include <linux/suspend.h> -#include <asm/mach-types.h> -#include <asm/memblock.h> -#include <asm/prom.h> -#include <asm/sections.h> -#include <asm/setup.h> -#include <asm/sizes.h> -#include <asm/tlb.h> -#include <asm/fixmap.h> - -#include <asm/mach/arch.h> -#include <asm/mach/map.h> - -#include "mm.h" - -static unsigned long phys_initrd_start __initdata = 0; -static unsigned long phys_initrd_size __initdata = 0; - -static int __init early_initrd(char *p) -{ - unsigned long start, size; - char *endp; - - start = memparse(p, &endp); - if (*endp == ',') { - size = memparse(endp + 1, NULL); - - phys_initrd_start = start; - phys_initrd_size = size; - } - return 0; -} -early_param("initrd", early_initrd); - -static int __init parse_tag_initrd(const struct tag *tag) -{ - printk(KERN_WARNING "ATAG_INITRD is deprecated; " - "please update your bootloader.\n"); - phys_initrd_start = __virt_to_phys(tag->u.initrd.start); - phys_initrd_size = tag->u.initrd.size; - return 0; -} - -__tagtable(ATAG_INITRD, parse_tag_initrd); - -static int __init parse_tag_initrd2(const struct tag *tag) -{ - phys_initrd_start = tag->u.initrd.start; - phys_initrd_size = tag->u.initrd.size; - return 0; -} - -__tagtable(ATAG_INITRD2, parse_tag_initrd2); - -#ifdef CONFIG_OF_FLATTREE -void __init early_init_dt_setup_initrd_arch(unsigned long start, unsigned long end) -{ - phys_initrd_start = start; - phys_initrd_size = end - start; -} -#endif /* CONFIG_OF_FLATTREE */ - -/* - * This keeps memory configuration data used by a couple memory - * initialization functions, as well as show_mem() for the skipping - * of holes in the memory map. It is populated by arm_add_memory(). - */ -struct meminfo meminfo; - -void show_mem(unsigned int filter) -{ - int free = 0, total = 0, reserved = 0; - int shared = 0, cached = 0, slab = 0, i; - struct meminfo * mi = &meminfo; - - printk("Mem-info:\n"); - show_free_areas(filter); - - for_each_bank (i, mi) { - struct membank *bank = &mi->bank[i]; - unsigned int pfn1, pfn2; - struct page *page, *end; - - pfn1 = bank_pfn_start(bank); - pfn2 = bank_pfn_end(bank); - - page = pfn_to_page(pfn1); - end = pfn_to_page(pfn2 - 1) + 1; - - do { - total++; - if (PageReserved(page)) - reserved++; - else if (PageSwapCache(page)) - cached++; - else if (PageSlab(page)) - slab++; - else if (!page_count(page)) - free++; - else - shared += page_count(page) - 1; - page++; - } while (page < end); - } - - printk("%d pages of RAM\n", total); - printk("%d free pages\n", free); - printk("%d reserved pages\n", reserved); - printk("%d slab pages\n", slab); - printk("%d pages shared\n", shared); - printk("%d pages swap cached\n", cached); -} - -static void __init find_limits(unsigned long *min, unsigned long *max_low, - unsigned long *max_high) -{ - struct meminfo *mi = &meminfo; - int i; - - /* This assumes the meminfo array is properly sorted */ - *min = bank_pfn_start(&mi->bank[0]); - for_each_bank (i, mi) - if (mi->bank[i].highmem) - break; - *max_low = bank_pfn_end(&mi->bank[i - 1]); - *max_high = bank_pfn_end(&mi->bank[mi->nr_banks - 1]); -} - -static void __init arm_bootmem_init(unsigned long start_pfn, - unsigned long end_pfn) -{ - struct memblock_region *reg; - unsigned int boot_pages; - phys_addr_t bitmap; - pg_data_t *pgdat; - /*u32 uboot_start; - u32 uboot_end; */ - /* - * Allocate the bootmem bitmap page. This must be in a region - * of memory which has already been mapped. - */ - boot_pages = bootmem_bootmap_pages(end_pfn - start_pfn); - bitmap = memblock_alloc_base(boot_pages << PAGE_SHIFT, L1_CACHE_BYTES, - __pfn_to_phys(end_pfn)); - - /* - * Initialise the bootmem allocator, handing the - * memory banks over to bootmem. - */ - node_set_online(0); - pgdat = NODE_DATA(0); - init_bootmem_node(pgdat, __phys_to_pfn(bitmap), start_pfn, end_pfn); - - /* Free the lowmem regions from memblock into bootmem. */ - for_each_memblock(memory, reg) { - unsigned long start = memblock_region_memory_base_pfn(reg); - unsigned long end = memblock_region_memory_end_pfn(reg); - - if (end >= end_pfn) - end = end_pfn; - if (start >= end) - break; - - free_bootmem(__pfn_to_phys(start), (end - start) << PAGE_SHIFT); - } - - /* Reserve the lowmem memblock reserved regions in bootmem. */ - for_each_memblock(reserved, reg) { - unsigned long start = memblock_region_reserved_base_pfn(reg); - unsigned long end = memblock_region_reserved_end_pfn(reg); - - if (end >= end_pfn) - end = end_pfn; - if (start >= end) - break; - - reserve_bootmem(__pfn_to_phys(start), - (end - start) << PAGE_SHIFT, BOOTMEM_DEFAULT); - } - - #if 0/*not needed in kernel resume path.*/ - /* - FIXME: This is hard-coded for WM3498 EVB. - Mark u-boot used memory section as nosave. - Thus, there will be no data needs to be restore to this area - so that u-boot code/data will not be overwritten during restoring - hibernation image from u-boot cmd_swsusp.c. - */ - uboot_start = 0x3C00000; //start: 60MB - uboot_end = 0x4100000; //end: 65MB - reserve_bootmem_node(pgdat, uboot_start, uboot_end - uboot_start, - BOOTMEM_DEFAULT);//Lch - register_nosave_region(uboot_start>>PAGE_SHIFT,uboot_end>>PAGE_SHIFT);//Lch - #endif -} - -#ifdef CONFIG_ZONE_DMA - -unsigned long arm_dma_zone_size __read_mostly; -EXPORT_SYMBOL(arm_dma_zone_size); - -/* - * The DMA mask corresponding to the maximum bus address allocatable - * using GFP_DMA. The default here places no restriction on DMA - * allocations. This must be the smallest DMA mask in the system, - * so a successful GFP_DMA allocation will always satisfy this. - */ -u32 arm_dma_limit; - -static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole, - unsigned long dma_size) -{ - if (size[0] <= dma_size) - return; - - size[ZONE_NORMAL] = size[0] - dma_size; - size[ZONE_DMA] = dma_size; - hole[ZONE_NORMAL] = hole[0]; - hole[ZONE_DMA] = 0; -} -#endif - -static void __init arm_bootmem_free(unsigned long min, unsigned long max_low, - unsigned long max_high) -{ - unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES]; - struct memblock_region *reg; - - /* - * initialise the zones. - */ - memset(zone_size, 0, sizeof(zone_size)); - - /* - * The memory size has already been determined. If we need - * to do anything fancy with the allocation of this memory - * to the zones, now is the time to do it. - */ - zone_size[0] = max_low - min; -#ifdef CONFIG_HIGHMEM - zone_size[ZONE_HIGHMEM] = max_high - max_low; -#endif - - /* - * Calculate the size of the holes. - * holes = node_size - sum(bank_sizes) - */ - memcpy(zhole_size, zone_size, sizeof(zhole_size)); - for_each_memblock(memory, reg) { - unsigned long start = memblock_region_memory_base_pfn(reg); - unsigned long end = memblock_region_memory_end_pfn(reg); - - if (start < max_low) { - unsigned long low_end = min(end, max_low); - zhole_size[0] -= low_end - start; - } -#ifdef CONFIG_HIGHMEM - if (end > max_low) { - unsigned long high_start = max(start, max_low); - zhole_size[ZONE_HIGHMEM] -= end - high_start; - } -#endif - } - -#ifdef CONFIG_ZONE_DMA - /* - * Adjust the sizes according to any special requirements for - * this machine type. - */ - if (arm_dma_zone_size) { - arm_adjust_dma_zone(zone_size, zhole_size, - arm_dma_zone_size >> PAGE_SHIFT); - arm_dma_limit = PHYS_OFFSET + arm_dma_zone_size - 1; - } else - arm_dma_limit = 0xffffffff; -#endif - - free_area_init_node(0, zone_size, min, zhole_size); -} - -#ifdef CONFIG_HAVE_ARCH_PFN_VALID -int pfn_valid(unsigned long pfn) -{ - return memblock_is_memory(__pfn_to_phys(pfn)); -} -EXPORT_SYMBOL(pfn_valid); -#endif - -#ifndef CONFIG_SPARSEMEM -static void __init arm_memory_present(void) -{ -} -#else -static void __init arm_memory_present(void) -{ - struct memblock_region *reg; - - for_each_memblock(memory, reg) - memory_present(0, memblock_region_memory_base_pfn(reg), - memblock_region_memory_end_pfn(reg)); -} -#endif - -static bool arm_memblock_steal_permitted = true; - -phys_addr_t __init arm_memblock_steal(phys_addr_t size, phys_addr_t align) -{ - phys_addr_t phys; - - BUG_ON(!arm_memblock_steal_permitted); - - phys = memblock_alloc(size, align); - memblock_free(phys, size); - memblock_remove(phys, size); - - return phys; -} - -void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc) -{ - int i; - - for (i = 0; i < mi->nr_banks; i++) - memblock_add(mi->bank[i].start, mi->bank[i].size); - - /* Register the kernel text, kernel data and initrd with memblock. */ -#ifdef CONFIG_XIP_KERNEL - memblock_reserve(__pa(_sdata), _end - _sdata); -#else - memblock_reserve(__pa(_stext), _end - _stext); -#endif -#ifdef CONFIG_BLK_DEV_INITRD - if (phys_initrd_size && - !memblock_is_region_memory(phys_initrd_start, phys_initrd_size)) { - pr_err("INITRD: 0x%08lx+0x%08lx is not a memory region - disabling initrd\n", - phys_initrd_start, phys_initrd_size); - phys_initrd_start = phys_initrd_size = 0; - } - if (phys_initrd_size && - memblock_is_region_reserved(phys_initrd_start, phys_initrd_size)) { - pr_err("INITRD: 0x%08lx+0x%08lx overlaps in-use memory region - disabling initrd\n", - phys_initrd_start, phys_initrd_size); - phys_initrd_start = phys_initrd_size = 0; - } - if (phys_initrd_size) { - memblock_reserve(phys_initrd_start, phys_initrd_size); - - /* Now convert initrd to virtual addresses */ - initrd_start = __phys_to_virt(phys_initrd_start); - initrd_end = initrd_start + phys_initrd_size; - } -#endif - - arm_mm_memblock_reserve(); - arm_dt_memblock_reserve(); - - /* reserve any platform specific memblock areas */ - if (mdesc->reserve) - mdesc->reserve(); - - arm_memblock_steal_permitted = false; - memblock_allow_resize(); - memblock_dump_all(); -} - -void __init bootmem_init(void) -{ - unsigned long min, max_low, max_high; - - max_low = max_high = 0; - - find_limits(&min, &max_low, &max_high); - - arm_bootmem_init(min, max_low); - - /* - * Sparsemem tries to allocate bootmem in memory_present(), - * so must be done after the fixed reservations - */ - arm_memory_present(); - - /* - * sparse_init() needs the bootmem allocator up and running. - */ - sparse_init(); - - /* - * Now free the memory - free_area_init_node needs - * the sparse mem_map arrays initialized by sparse_init() - * for memmap_init_zone(), otherwise all PFNs are invalid. - */ - arm_bootmem_free(min, max_low, max_high); - - /* - * This doesn't seem to be used by the Linux memory manager any - * more, but is used by ll_rw_block. If we can get rid of it, we - * also get rid of some of the stuff above as well. - * - * Note: max_low_pfn and max_pfn reflect the number of _pages_ in - * the system, not the maximum PFN. - */ - max_low_pfn = max_low - PHYS_PFN_OFFSET; - max_pfn = max_high - PHYS_PFN_OFFSET; -} - -static inline int free_area(unsigned long pfn, unsigned long end, char *s) -{ - unsigned int pages = 0, size = (end - pfn) << (PAGE_SHIFT - 10); - - for (; pfn < end; pfn++) { - struct page *page = pfn_to_page(pfn); - ClearPageReserved(page); - init_page_count(page); - __free_page(page); - pages++; - } - - if (size && s) - printk(KERN_INFO "Freeing %s memory: %dK\n", s, size); - - return pages; -} - -/* - * Poison init memory with an undefined instruction (ARM) or a branch to an - * undefined instruction (Thumb). - */ -static inline void poison_init_mem(void *s, size_t count) -{ - u32 *p = (u32 *)s; - for (; count != 0; count -= 4) - *p++ = 0xe7fddef0; -} - -static inline void -free_memmap(unsigned long start_pfn, unsigned long end_pfn) -{ - struct page *start_pg, *end_pg; - unsigned long pg, pgend; - - /* - * Convert start_pfn/end_pfn to a struct page pointer. - */ - start_pg = pfn_to_page(start_pfn - 1) + 1; - end_pg = pfn_to_page(end_pfn - 1) + 1; - - /* - * Convert to physical addresses, and - * round start upwards and end downwards. - */ - pg = (unsigned long)PAGE_ALIGN(__pa(start_pg)); - pgend = (unsigned long)__pa(end_pg) & PAGE_MASK; - - /* - * If there are free pages between these, - * free the section of the memmap array. - */ - if (pg < pgend) - free_bootmem(pg, pgend - pg); -} - -/* - * The mem_map array can get very big. Free the unused area of the memory map. - */ -static void __init free_unused_memmap(struct meminfo *mi) -{ - unsigned long bank_start, prev_bank_end = 0; - unsigned int i; - - /* - * This relies on each bank being in address order. - * The banks are sorted previously in bootmem_init(). - */ - for_each_bank(i, mi) { - struct membank *bank = &mi->bank[i]; - - bank_start = bank_pfn_start(bank); - -#ifdef CONFIG_SPARSEMEM - /* - * Take care not to free memmap entries that don't exist - * due to SPARSEMEM sections which aren't present. - */ - bank_start = min(bank_start, - ALIGN(prev_bank_end, PAGES_PER_SECTION)); -#else - /* - * Align down here since the VM subsystem insists that the - * memmap entries are valid from the bank start aligned to - * MAX_ORDER_NR_PAGES. - */ - bank_start = round_down(bank_start, MAX_ORDER_NR_PAGES); -#endif - /* - * If we had a previous bank, and there is a space - * between the current bank and the previous, free it. - */ - if (prev_bank_end && prev_bank_end < bank_start) - free_memmap(prev_bank_end, bank_start); - - /* - * Align up here since the VM subsystem insists that the - * memmap entries are valid from the bank end aligned to - * MAX_ORDER_NR_PAGES. - */ - prev_bank_end = ALIGN(bank_pfn_end(bank), MAX_ORDER_NR_PAGES); - } - -#ifdef CONFIG_SPARSEMEM - if (!IS_ALIGNED(prev_bank_end, PAGES_PER_SECTION)) - free_memmap(prev_bank_end, - ALIGN(prev_bank_end, PAGES_PER_SECTION)); -#endif -} - -static void __init free_highpages(void) -{ -#ifdef CONFIG_HIGHMEM - unsigned long max_low = max_low_pfn + PHYS_PFN_OFFSET; - struct memblock_region *mem, *res; - - /* set highmem page free */ - for_each_memblock(memory, mem) { - unsigned long start = memblock_region_memory_base_pfn(mem); - unsigned long end = memblock_region_memory_end_pfn(mem); - - /* Ignore complete lowmem entries */ - if (end <= max_low) - continue; - - /* Truncate partial highmem entries */ - if (start < max_low) - start = max_low; - - /* Find and exclude any reserved regions */ - for_each_memblock(reserved, res) { - unsigned long res_start, res_end; - - res_start = memblock_region_reserved_base_pfn(res); - res_end = memblock_region_reserved_end_pfn(res); - - if (res_end < start) - continue; - if (res_start < start) - res_start = start; - if (res_start > end) - res_start = end; - if (res_end > end) - res_end = end; - if (res_start != start) - totalhigh_pages += free_area(start, res_start, - NULL); - start = res_end; - if (start == end) - break; - } - - /* And now free anything which remains */ - if (start < end) - totalhigh_pages += free_area(start, end, NULL); - } - totalram_pages += totalhigh_pages; -#endif -} - -/* - * mem_init() marks the free areas in the mem_map and tells us how much - * memory is free. This is done after various parts of the system have - * claimed their memory after the kernel image. - */ -void __init mem_init(void) -{ - unsigned long reserved_pages, free_pages; - struct memblock_region *reg; - int i; -#ifdef CONFIG_HAVE_TCM - /* These pointers are filled in on TCM detection */ - extern u32 dtcm_end; - extern u32 itcm_end; -#endif - - max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map; - - /* this will put all unused low memory onto the freelists */ - free_unused_memmap(&meminfo); - - totalram_pages += free_all_bootmem(); - -#ifdef CONFIG_SA1111 - /* now that our DMA memory is actually so designated, we can free it */ - totalram_pages += free_area(PHYS_PFN_OFFSET, - __phys_to_pfn(__pa(swapper_pg_dir)), NULL); -#endif - - free_highpages(); - - reserved_pages = free_pages = 0; - - for_each_bank(i, &meminfo) { - struct membank *bank = &meminfo.bank[i]; - unsigned int pfn1, pfn2; - struct page *page, *end; - - pfn1 = bank_pfn_start(bank); - pfn2 = bank_pfn_end(bank); - - 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 - */ - printk(KERN_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)); - - printk(KERN_NOTICE "Memory: %luk/%luk available, %luk reserved, %luK highmem\n", - nr_free_pages() << (PAGE_SHIFT-10), - free_pages << (PAGE_SHIFT-10), - reserved_pages << (PAGE_SHIFT-10), - totalhigh_pages << (PAGE_SHIFT-10)); - -#define MLK(b, t) b, t, ((t) - (b)) >> 10 -#define MLM(b, t) b, t, ((t) - (b)) >> 20 -#define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), SZ_1K) - - printk(KERN_NOTICE "Virtual kernel memory layout:\n" - " vector : 0x%08lx - 0x%08lx (%4ld kB)\n" -#ifdef CONFIG_HAVE_TCM - " DTCM : 0x%08lx - 0x%08lx (%4ld kB)\n" - " ITCM : 0x%08lx - 0x%08lx (%4ld kB)\n" -#endif - " fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n" - " vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n" - " lowmem : 0x%08lx - 0x%08lx (%4ld MB)\n" -#ifdef CONFIG_HIGHMEM - " pkmap : 0x%08lx - 0x%08lx (%4ld MB)\n" -#endif -#ifdef CONFIG_MODULES - " modules : 0x%08lx - 0x%08lx (%4ld MB)\n" -#endif - " .text : 0x%p" " - 0x%p" " (%4d kB)\n" - " .init : 0x%p" " - 0x%p" " (%4d kB)\n" - " .data : 0x%p" " - 0x%p" " (%4d kB)\n" - " .bss : 0x%p" " - 0x%p" " (%4d kB)\n", - - MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) + - (PAGE_SIZE)), -#ifdef CONFIG_HAVE_TCM - MLK(DTCM_OFFSET, (unsigned long) dtcm_end), - MLK(ITCM_OFFSET, (unsigned long) itcm_end), -#endif - MLK(FIXADDR_START, FIXADDR_TOP), - MLM(VMALLOC_START, VMALLOC_END), - MLM(PAGE_OFFSET, (unsigned long)high_memory), -#ifdef CONFIG_HIGHMEM - MLM(PKMAP_BASE, (PKMAP_BASE) + (LAST_PKMAP) * - (PAGE_SIZE)), -#endif -#ifdef CONFIG_MODULES - MLM(MODULES_VADDR, MODULES_END), -#endif - - MLK_ROUNDUP(_text, _etext), - MLK_ROUNDUP(__init_begin, __init_end), - MLK_ROUNDUP(_sdata, _edata), - MLK_ROUNDUP(__bss_start, __bss_stop)); - -#undef MLK -#undef MLM -#undef MLK_ROUNDUP - - /* - * Check boundaries twice: Some fundamental inconsistencies can - * be detected at build time already. - */ -#ifdef CONFIG_MMU - BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR); - BUG_ON(TASK_SIZE > MODULES_VADDR); -#endif - -#ifdef CONFIG_HIGHMEM - BUILD_BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET); - BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET); -#endif - - if (PAGE_SIZE >= 16384 && num_physpages <= 128) { - extern int sysctl_overcommit_memory; - /* - * On a machine this small we won't get - * anywhere without overcommit, so turn - * it on by default. - */ - sysctl_overcommit_memory = OVERCOMMIT_ALWAYS; - } -} - -void free_initmem(void) -{ -#ifdef CONFIG_HAVE_TCM - extern char __tcm_start, __tcm_end; - - poison_init_mem(&__tcm_start, &__tcm_end - &__tcm_start); - totalram_pages += free_area(__phys_to_pfn(__pa(&__tcm_start)), - __phys_to_pfn(__pa(&__tcm_end)), - "TCM link"); -#endif - - poison_init_mem(__init_begin, __init_end - __init_begin); - if (!machine_is_integrator() && !machine_is_cintegrator()) - totalram_pages += free_area(__phys_to_pfn(__pa(__init_begin)), - __phys_to_pfn(__pa(__init_end)), - "init"); -} - -#ifdef CONFIG_BLK_DEV_INITRD - -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); - totalram_pages += free_area(__phys_to_pfn(__pa(start)), - __phys_to_pfn(__pa(end)), - "initrd"); - } -} - -static int __init keepinitrd_setup(char *__unused) -{ - keep_initrd = 1; - return 1; -} - -__setup("keepinitrd", keepinitrd_setup); -#endif |