Commit 8d86e5f9 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/mm: Fix memory_block_size_bytes() for non-pseries
  mm: Move definition of MIN_MEMORY_BLOCK_SIZE to a header
parents d93a881d 770e1ac5
......@@ -12,6 +12,8 @@
#include <linux/of.h>
#include <linux/memblock.h>
#include <linux/vmalloc.h>
#include <linux/memory.h>
#include <asm/firmware.h>
#include <asm/machdep.h>
#include <asm/pSeries_reconfig.h>
......@@ -20,24 +22,25 @@
static unsigned long get_memblock_size(void)
{
struct device_node *np;
unsigned int memblock_size = 0;
unsigned int memblock_size = MIN_MEMORY_BLOCK_SIZE;
struct resource r;
np = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");
if (np) {
const unsigned long *size;
const __be64 *size;
size = of_get_property(np, "ibm,lmb-size", NULL);
memblock_size = size ? *size : 0;
if (size)
memblock_size = be64_to_cpup(size);
of_node_put(np);
} else {
} else if (machine_is(pseries)) {
/* This fallback really only applies to pseries */
unsigned int memzero_size = 0;
const unsigned int *regs;
np = of_find_node_by_path("/memory@0");
if (np) {
regs = of_get_property(np, "reg", NULL);
memzero_size = regs ? regs[3] : 0;
if (!of_address_to_resource(np, 0, &r))
memzero_size = resource_size(&r);
of_node_put(np);
}
......@@ -50,16 +53,21 @@ static unsigned long get_memblock_size(void)
sprintf(buf, "/memory@%x", memzero_size);
np = of_find_node_by_path(buf);
if (np) {
regs = of_get_property(np, "reg", NULL);
memblock_size = regs ? regs[3] : 0;
if (!of_address_to_resource(np, 0, &r))
memblock_size = resource_size(&r);
of_node_put(np);
}
}
}
return memblock_size;
}
/* WARNING: This is going to override the generic definition whenever
* pseries is built-in regardless of what platform is active at boot
* time. This is fine for now as this is the only "option" and it
* should work everywhere. If not, we'll have to turn this into a
* ppc_md. callback
*/
unsigned long memory_block_size_bytes(void)
{
return get_memblock_size();
......
......@@ -28,6 +28,7 @@
#include <linux/poison.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/memory.h>
#include <linux/memory_hotplug.h>
#include <linux/nmi.h>
#include <linux/gfp.h>
......@@ -895,8 +896,6 @@ const char *arch_vma_name(struct vm_area_struct *vma)
}
#ifdef CONFIG_X86_UV
#define MIN_MEMORY_BLOCK_SIZE (1 << SECTION_SIZE_BITS)
unsigned long memory_block_size_bytes(void)
{
if (is_uv_system()) {
......
......@@ -30,7 +30,6 @@
static DEFINE_MUTEX(mem_sysfs_mutex);
#define MEMORY_CLASS_NAME "memory"
#define MIN_MEMORY_BLOCK_SIZE (1 << SECTION_SIZE_BITS)
static int sections_per_block;
......
......@@ -20,6 +20,8 @@
#include <linux/compiler.h>
#include <linux/mutex.h>
#define MIN_MEMORY_BLOCK_SIZE (1 << SECTION_SIZE_BITS)
struct memory_block {
unsigned long start_section_nr;
unsigned long end_section_nr;
......
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