aboutsummaryrefslogtreecommitdiffstats
path: root/arch/parisc/mm/init.c
diff options
context:
space:
mode:
authorHelge Deller <deller@gmx.de>2016-10-07 16:50:21 +0200
committerHelge Deller <deller@gmx.de>2016-10-07 17:03:02 +0200
commit4fe9e1d957e45ad8eba9885ee860a0e93d13a7c7 (patch)
tree3b9777d418977e74cdb37404de428c90aa1aee0a /arch/parisc/mm/init.c
parentparisc: Add hardened usercopy feature (diff)
downloadlinux-dev-4fe9e1d957e45ad8eba9885ee860a0e93d13a7c7.tar.xz
linux-dev-4fe9e1d957e45ad8eba9885ee860a0e93d13a7c7.zip
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>
Diffstat (limited to '')
-rw-r--r--arch/parisc/mm/init.c126
1 files changed, 62 insertions, 64 deletions
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 6b3e7c6ee096..356f38473b5d 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -14,6 +14,7 @@
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/gfp.h>
#include <linux/delay.h>
#include <linux/init.h>
@@ -79,6 +80,34 @@ static struct resource sysram_resources[MAX_PHYSMEM_RANGES] __read_mostly;
physmem_range_t pmem_ranges[MAX_PHYSMEM_RANGES] __read_mostly;
int npmem_ranges __read_mostly;
+/*
+ * get_memblock() allocates pages via memblock.
+ * We can't use memblock_find_in_range(0, KERNEL_INITIAL_SIZE) here since it
+ * doesn't allocate from bottom to top which is needed because we only created
+ * the initial mapping up to KERNEL_INITIAL_SIZE in the assembly bootup code.
+ */
+static void * __init get_memblock(unsigned long size)
+{
+ static phys_addr_t search_addr __initdata;
+ phys_addr_t phys;
+
+ if (!search_addr)
+ search_addr = PAGE_ALIGN(__pa((unsigned long) &_end));
+ search_addr = ALIGN(search_addr, size);
+ while (!memblock_is_region_memory(search_addr, size) ||
+ memblock_is_region_reserved(search_addr, size)) {
+ search_addr += size;
+ }
+ phys = search_addr;
+
+ if (phys)
+ memblock_reserve(phys, size);
+ else
+ panic("get_memblock() failed.\n");
+
+ return __va(phys);
+}
+
#ifdef CONFIG_64BIT
#define MAX_MEM (~0UL)
#else /* !CONFIG_64BIT */
@@ -118,11 +147,7 @@ static void __init mem_limit_func(void)
static void __init setup_bootmem(void)
{
- unsigned long bootmap_size;
unsigned long mem_max;
- unsigned long bootmap_pages;
- unsigned long bootmap_start_pfn;
- unsigned long bootmap_pfn;
#ifndef CONFIG_DISCONTIGMEM
physmem_range_t pmem_holes[MAX_PHYSMEM_RANGES - 1];
int npmem_holes;
@@ -178,33 +203,29 @@ static void __init setup_bootmem(void)
}
#endif
- if (npmem_ranges > 1) {
-
- /* Print the memory ranges */
+ /* Print the memory ranges */
+ pr_info("Memory Ranges:\n");
- printk(KERN_INFO "Memory Ranges:\n");
+ for (i = 0; i < npmem_ranges; i++) {
+ struct resource *res = &sysram_resources[i];
+ unsigned long start;
+ unsigned long size;
- for (i = 0; i < npmem_ranges; i++) {
- unsigned long start;
- unsigned long size;
+ size = (pmem_ranges[i].pages << PAGE_SHIFT);
+ start = (pmem_ranges[i].start_pfn << PAGE_SHIFT);
+ pr_info("%2d) Start 0x%016lx End 0x%016lx Size %6ld MB\n",
+ i, start, start + (size - 1), size >> 20);
- size = (pmem_ranges[i].pages << PAGE_SHIFT);
- start = (pmem_ranges[i].start_pfn << PAGE_SHIFT);
- printk(KERN_INFO "%2d) Start 0x%016lx End 0x%016lx Size %6ld MB\n",
- i,start, start + (size - 1), size >> 20);
- }
- }
-
- sysram_resource_count = npmem_ranges;
- for (i = 0; i < sysram_resource_count; i++) {
- struct resource *res = &sysram_resources[i];
+ /* request memory resource */
res->name = "System RAM";
- res->start = pmem_ranges[i].start_pfn << PAGE_SHIFT;
- res->end = res->start + (pmem_ranges[i].pages << PAGE_SHIFT)-1;
+ res->start = start;
+ res->end = start + size - 1;
res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
request_resource(&iomem_resource, res);
}
+ sysram_resource_count = npmem_ranges;
+
/*
* For 32 bit kernels we limit the amount of memory we can
* support, in order to preserve enough kernel address space
@@ -263,16 +284,9 @@ static void __init setup_bootmem(void)
}
#endif
- bootmap_pages = 0;
- for (i = 0; i < npmem_ranges; i++)
- bootmap_pages += bootmem_bootmap_pages(pmem_ranges[i].pages);
-
- bootmap_start_pfn = PAGE_ALIGN(__pa((unsigned long) &_end)) >> PAGE_SHIFT;
-
#ifdef CONFIG_DISCONTIGMEM
for (i = 0; i < MAX_PHYSMEM_RANGES; i++) {
memset(NODE_DATA(i), 0, sizeof(pg_data_t));
- NODE_DATA(i)->bdata = &bootmem_node_data[i];
}
memset(pfnnid_map, 0xff, sizeof(pfnnid_map));
@@ -284,28 +298,24 @@ static void __init setup_bootmem(void)
/*
* Initialize and free the full range of memory in each range.
- * Note that the only writing these routines do are to the bootmap,
- * and we've made sure to locate the bootmap properly so that they
- * won't be writing over anything important.
*/
- bootmap_pfn = bootmap_start_pfn;
max_pfn = 0;
for (i = 0; i < npmem_ranges; i++) {
unsigned long start_pfn;
unsigned long npages;
+ unsigned long start;
+ unsigned long size;
start_pfn = pmem_ranges[i].start_pfn;
npages = pmem_ranges[i].pages;
- bootmap_size = init_bootmem_node(NODE_DATA(i),
- bootmap_pfn,
- start_pfn,
- (start_pfn + npages) );
- free_bootmem_node(NODE_DATA(i),
- (start_pfn << PAGE_SHIFT),
- (npages << PAGE_SHIFT) );
- bootmap_pfn += (bootmap_size + PAGE_SIZE - 1) >> PAGE_SHIFT;
+ start = start_pfn << PAGE_SHIFT;
+ size = npages << PAGE_SHIFT;
+
+ /* add system RAM memblock */
+ memblock_add(start, size);
+
if ((start_pfn + npages) > max_pfn)
max_pfn = start_pfn + npages;
}
@@ -317,32 +327,22 @@ static void __init setup_bootmem(void)
*/
max_low_pfn = max_pfn;
- /* bootmap sizing messed up? */
- BUG_ON((bootmap_pfn - bootmap_start_pfn) != bootmap_pages);
-
/* reserve PAGE0 pdc memory, kernel text/data/bss & bootmap */
#define PDC_CONSOLE_IO_IODC_SIZE 32768
- reserve_bootmem_node(NODE_DATA(0), 0UL,
- (unsigned long)(PAGE0->mem_free +
- PDC_CONSOLE_IO_IODC_SIZE), BOOTMEM_DEFAULT);
- reserve_bootmem_node(NODE_DATA(0), __pa(KERNEL_BINARY_TEXT_START),
- (unsigned long)(_end - KERNEL_BINARY_TEXT_START),
- BOOTMEM_DEFAULT);
- reserve_bootmem_node(NODE_DATA(0), (bootmap_start_pfn << PAGE_SHIFT),
- ((bootmap_pfn - bootmap_start_pfn) << PAGE_SHIFT),
- BOOTMEM_DEFAULT);
+ memblock_reserve(0UL, (unsigned long)(PAGE0->mem_free +
+ PDC_CONSOLE_IO_IODC_SIZE));
+ memblock_reserve(__pa(KERNEL_BINARY_TEXT_START),
+ (unsigned long)(_end - KERNEL_BINARY_TEXT_START));
#ifndef CONFIG_DISCONTIGMEM
/* reserve the holes */
for (i = 0; i < npmem_holes; i++) {
- reserve_bootmem_node(NODE_DATA(0),
- (pmem_holes[i].start_pfn << PAGE_SHIFT),
- (pmem_holes[i].pages << PAGE_SHIFT),
- BOOTMEM_DEFAULT);
+ memblock_reserve((pmem_holes[i].start_pfn << PAGE_SHIFT),
+ (pmem_holes[i].pages << PAGE_SHIFT));
}
#endif
@@ -360,8 +360,7 @@ static void __init setup_bootmem(void)
initrd_below_start_ok = 1;
printk(KERN_INFO "initrd: reserving %08lx-%08lx (mem_max %08lx)\n", __pa(initrd_start), __pa(initrd_start) + initrd_reserve, mem_max);
- reserve_bootmem_node(NODE_DATA(0), __pa(initrd_start),
- initrd_reserve, BOOTMEM_DEFAULT);
+ memblock_reserve(__pa(initrd_start), initrd_reserve);
}
}
#endif
@@ -439,7 +438,7 @@ static void __init map_pages(unsigned long start_vaddr,
*/
if (!pmd) {
- pmd = (pmd_t *) alloc_bootmem_low_pages_node(NODE_DATA(0), PAGE_SIZE << PMD_ORDER);
+ pmd = (pmd_t *) get_memblock(PAGE_SIZE << PMD_ORDER);
pmd = (pmd_t *) __pa(pmd);
}
@@ -458,8 +457,7 @@ static void __init map_pages(unsigned long start_vaddr,
pg_table = (pte_t *)pmd_address(*pmd);
if (!pg_table) {
- pg_table = (pte_t *)
- alloc_bootmem_low_pages_node(NODE_DATA(0), PAGE_SIZE);
+ pg_table = (pte_t *) get_memblock(PAGE_SIZE);
pg_table = (pte_t *) __pa(pg_table);
}
@@ -737,7 +735,7 @@ static void __init pagetable_init(void)
}
#endif
- empty_zero_page = alloc_bootmem_pages(PAGE_SIZE);
+ empty_zero_page = get_memblock(PAGE_SIZE);
}
static void __init gateway_init(void)