parisc: Drop bootmem and switch to memblock
Memblock is the standard kernel boot-time memory tracker/allocator. Use it instead of the bootmem allocator. This allows using kmemleak, CMA and other features. Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller
Родитель
9e91db6b4a
Коммит
4fe9e1d957
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@ -10,6 +10,8 @@ config PARISC
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select RTC_CLASS
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select RTC_DRV_GENERIC
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select INIT_ALL_POSSIBLE
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select HAVE_MEMBLOCK
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select NO_BOOTMEM
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select BUG
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select BUILDTIME_EXTABLE_SORT
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select HAVE_PERF_EVENTS
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@ -138,8 +138,6 @@ SECTIONS
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/* BSS */
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BSS_SECTION(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE)
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/* bootmap is allocated in setup_bootmem() directly behind bss. */
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. = ALIGN(HUGEPAGE_SIZE);
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_end = . ;
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@ -14,6 +14,7 @@
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/bootmem.h>
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#include <linux/memblock.h>
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#include <linux/gfp.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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@ -79,6 +80,34 @@ static struct resource sysram_resources[MAX_PHYSMEM_RANGES] __read_mostly;
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physmem_range_t pmem_ranges[MAX_PHYSMEM_RANGES] __read_mostly;
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int npmem_ranges __read_mostly;
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/*
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* get_memblock() allocates pages via memblock.
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* We can't use memblock_find_in_range(0, KERNEL_INITIAL_SIZE) here since it
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* doesn't allocate from bottom to top which is needed because we only created
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* the initial mapping up to KERNEL_INITIAL_SIZE in the assembly bootup code.
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*/
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static void * __init get_memblock(unsigned long size)
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{
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static phys_addr_t search_addr __initdata;
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phys_addr_t phys;
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if (!search_addr)
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search_addr = PAGE_ALIGN(__pa((unsigned long) &_end));
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search_addr = ALIGN(search_addr, size);
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while (!memblock_is_region_memory(search_addr, size) ||
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memblock_is_region_reserved(search_addr, size)) {
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search_addr += size;
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}
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phys = search_addr;
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if (phys)
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memblock_reserve(phys, size);
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else
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panic("get_memblock() failed.\n");
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return __va(phys);
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}
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#ifdef CONFIG_64BIT
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#define MAX_MEM (~0UL)
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#else /* !CONFIG_64BIT */
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@ -118,11 +147,7 @@ static void __init mem_limit_func(void)
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static void __init setup_bootmem(void)
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{
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unsigned long bootmap_size;
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unsigned long mem_max;
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unsigned long bootmap_pages;
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unsigned long bootmap_start_pfn;
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unsigned long bootmap_pfn;
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#ifndef CONFIG_DISCONTIGMEM
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physmem_range_t pmem_holes[MAX_PHYSMEM_RANGES - 1];
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int npmem_holes;
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@ -178,33 +203,29 @@ static void __init setup_bootmem(void)
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}
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#endif
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if (npmem_ranges > 1) {
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/* Print the memory ranges */
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printk(KERN_INFO "Memory Ranges:\n");
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pr_info("Memory Ranges:\n");
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for (i = 0; i < npmem_ranges; i++) {
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struct resource *res = &sysram_resources[i];
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unsigned long start;
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unsigned long size;
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size = (pmem_ranges[i].pages << PAGE_SHIFT);
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start = (pmem_ranges[i].start_pfn << PAGE_SHIFT);
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printk(KERN_INFO "%2d) Start 0x%016lx End 0x%016lx Size %6ld MB\n",
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pr_info("%2d) Start 0x%016lx End 0x%016lx Size %6ld MB\n",
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i, start, start + (size - 1), size >> 20);
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}
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}
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sysram_resource_count = npmem_ranges;
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for (i = 0; i < sysram_resource_count; i++) {
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struct resource *res = &sysram_resources[i];
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/* request memory resource */
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res->name = "System RAM";
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res->start = pmem_ranges[i].start_pfn << PAGE_SHIFT;
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res->end = res->start + (pmem_ranges[i].pages << PAGE_SHIFT)-1;
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res->start = start;
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res->end = start + size - 1;
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res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
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request_resource(&iomem_resource, res);
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}
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sysram_resource_count = npmem_ranges;
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/*
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* For 32 bit kernels we limit the amount of memory we can
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* support, in order to preserve enough kernel address space
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@ -263,16 +284,9 @@ static void __init setup_bootmem(void)
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}
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#endif
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bootmap_pages = 0;
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for (i = 0; i < npmem_ranges; i++)
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bootmap_pages += bootmem_bootmap_pages(pmem_ranges[i].pages);
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bootmap_start_pfn = PAGE_ALIGN(__pa((unsigned long) &_end)) >> PAGE_SHIFT;
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#ifdef CONFIG_DISCONTIGMEM
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for (i = 0; i < MAX_PHYSMEM_RANGES; i++) {
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memset(NODE_DATA(i), 0, sizeof(pg_data_t));
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NODE_DATA(i)->bdata = &bootmem_node_data[i];
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}
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memset(pfnnid_map, 0xff, sizeof(pfnnid_map));
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@ -284,28 +298,24 @@ static void __init setup_bootmem(void)
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/*
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* Initialize and free the full range of memory in each range.
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* Note that the only writing these routines do are to the bootmap,
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* and we've made sure to locate the bootmap properly so that they
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* won't be writing over anything important.
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*/
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bootmap_pfn = bootmap_start_pfn;
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max_pfn = 0;
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for (i = 0; i < npmem_ranges; i++) {
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unsigned long start_pfn;
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unsigned long npages;
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unsigned long start;
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unsigned long size;
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start_pfn = pmem_ranges[i].start_pfn;
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npages = pmem_ranges[i].pages;
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bootmap_size = init_bootmem_node(NODE_DATA(i),
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bootmap_pfn,
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start_pfn,
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(start_pfn + npages) );
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free_bootmem_node(NODE_DATA(i),
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(start_pfn << PAGE_SHIFT),
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(npages << PAGE_SHIFT) );
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bootmap_pfn += (bootmap_size + PAGE_SIZE - 1) >> PAGE_SHIFT;
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start = start_pfn << PAGE_SHIFT;
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size = npages << PAGE_SHIFT;
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/* add system RAM memblock */
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memblock_add(start, size);
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if ((start_pfn + npages) > max_pfn)
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max_pfn = start_pfn + npages;
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}
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@ -317,32 +327,22 @@ static void __init setup_bootmem(void)
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*/
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max_low_pfn = max_pfn;
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/* bootmap sizing messed up? */
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BUG_ON((bootmap_pfn - bootmap_start_pfn) != bootmap_pages);
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/* reserve PAGE0 pdc memory, kernel text/data/bss & bootmap */
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#define PDC_CONSOLE_IO_IODC_SIZE 32768
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reserve_bootmem_node(NODE_DATA(0), 0UL,
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(unsigned long)(PAGE0->mem_free +
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PDC_CONSOLE_IO_IODC_SIZE), BOOTMEM_DEFAULT);
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reserve_bootmem_node(NODE_DATA(0), __pa(KERNEL_BINARY_TEXT_START),
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(unsigned long)(_end - KERNEL_BINARY_TEXT_START),
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BOOTMEM_DEFAULT);
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reserve_bootmem_node(NODE_DATA(0), (bootmap_start_pfn << PAGE_SHIFT),
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((bootmap_pfn - bootmap_start_pfn) << PAGE_SHIFT),
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BOOTMEM_DEFAULT);
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memblock_reserve(0UL, (unsigned long)(PAGE0->mem_free +
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PDC_CONSOLE_IO_IODC_SIZE));
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memblock_reserve(__pa(KERNEL_BINARY_TEXT_START),
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(unsigned long)(_end - KERNEL_BINARY_TEXT_START));
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#ifndef CONFIG_DISCONTIGMEM
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/* reserve the holes */
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for (i = 0; i < npmem_holes; i++) {
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reserve_bootmem_node(NODE_DATA(0),
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(pmem_holes[i].start_pfn << PAGE_SHIFT),
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(pmem_holes[i].pages << PAGE_SHIFT),
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BOOTMEM_DEFAULT);
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memblock_reserve((pmem_holes[i].start_pfn << PAGE_SHIFT),
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(pmem_holes[i].pages << PAGE_SHIFT));
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}
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#endif
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@ -360,8 +360,7 @@ static void __init setup_bootmem(void)
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initrd_below_start_ok = 1;
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printk(KERN_INFO "initrd: reserving %08lx-%08lx (mem_max %08lx)\n", __pa(initrd_start), __pa(initrd_start) + initrd_reserve, mem_max);
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reserve_bootmem_node(NODE_DATA(0), __pa(initrd_start),
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initrd_reserve, BOOTMEM_DEFAULT);
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memblock_reserve(__pa(initrd_start), initrd_reserve);
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}
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}
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#endif
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@ -439,7 +438,7 @@ static void __init map_pages(unsigned long start_vaddr,
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*/
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if (!pmd) {
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pmd = (pmd_t *) alloc_bootmem_low_pages_node(NODE_DATA(0), PAGE_SIZE << PMD_ORDER);
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pmd = (pmd_t *) get_memblock(PAGE_SIZE << PMD_ORDER);
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pmd = (pmd_t *) __pa(pmd);
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}
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@ -458,8 +457,7 @@ static void __init map_pages(unsigned long start_vaddr,
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pg_table = (pte_t *)pmd_address(*pmd);
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if (!pg_table) {
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pg_table = (pte_t *)
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alloc_bootmem_low_pages_node(NODE_DATA(0), PAGE_SIZE);
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pg_table = (pte_t *) get_memblock(PAGE_SIZE);
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pg_table = (pte_t *) __pa(pg_table);
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}
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@ -737,7 +735,7 @@ static void __init pagetable_init(void)
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}
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#endif
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empty_zero_page = alloc_bootmem_pages(PAGE_SIZE);
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empty_zero_page = get_memblock(PAGE_SIZE);
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}
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static void __init gateway_init(void)
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