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[PATCH] ppc64: Convert NUMA to sparsemem (3) 

Convert to sparsemem and remove all the discontigmem code in the
process. This has a few advantages:

- The old numa_memory_lookup_table can go away
- All the arch specific discontigmem magic can go away

We also remove the triple pass of memory properties and instead create a
list of per node extents that we iterate through. A final cleanup would
be to change our lmb code to store extents per node, then we can reuse
that information in the numa code.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Anton Blanchard 2005-11-11 14:22:35 +11:00 committed by Paul Mackerras
parent 3e66c4def1
commit 45fb6cea09
6 changed files with 171 additions and 298 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/powerpc/Kconfig
View File

@ -581,17 +581,12 @@ config ARCH_FLATMEM_ENABLE
def_bool y
depends on PPC64 && !NUMA
config ARCH_DISCONTIGMEM_ENABLE
def_bool y
depends on SMP && PPC_PSERIES
config ARCH_DISCONTIGMEM_DEFAULT
def_bool y
depends on ARCH_DISCONTIGMEM_ENABLE
config ARCH_SPARSEMEM_ENABLE
def_bool y
depends on ARCH_DISCONTIGMEM_ENABLE
config ARCH_SPARSEMEM_DEFAULT
def_bool y
depends on SMP && PPC_PSERIES
source "mm/Kconfig"

365
arch/powerpc/mm/numa.c
View File

@ -17,9 +17,8 @@
#include <linux/nodemask.h>
#include <linux/cpu.h>
#include <linux/notifier.h>
#include <asm/sparsemem.h>
#include <asm/lmb.h>
#include <asm/machdep.h>
#include <asm/abs_addr.h>
#include <asm/system.h>
#include <asm/smp.h>
@ -28,42 +27,113 @@ static int numa_enabled = 1;
static int numa_debug;
#define dbg(args...) if (numa_debug) { printk(KERN_INFO args); }
#ifdef DEBUG_NUMA
#define ARRAY_INITIALISER -1
#else
#define ARRAY_INITIALISER 0
#endif
int numa_cpu_lookup_table[NR_CPUS] = { [ 0 ... (NR_CPUS - 1)] =
ARRAY_INITIALISER};
char *numa_memory_lookup_table;
int numa_cpu_lookup_table[NR_CPUS];
cpumask_t numa_cpumask_lookup_table[MAX_NUMNODES];
struct pglist_data *node_data[MAX_NUMNODES];
bootmem_data_t __initdata plat_node_bdata[MAX_NUMNODES];
EXPORT_SYMBOL(numa_cpu_lookup_table);
EXPORT_SYMBOL(numa_cpumask_lookup_table);
EXPORT_SYMBOL(node_data);
static bootmem_data_t __initdata plat_node_bdata[MAX_NUMNODES];
static int min_common_depth;
/*
* We need somewhere to store start/span for each node until we have
* We need somewhere to store start/end/node for each region until we have
* allocated the real node_data structures.
*/
#define MAX_REGIONS (MAX_LMB_REGIONS*2)
static struct {
unsigned long node_start_pfn;
unsigned long node_end_pfn;
unsigned long node_present_pages;
} init_node_data[MAX_NUMNODES] __initdata;
unsigned long start_pfn;
unsigned long end_pfn;
int nid;
} init_node_data[MAX_REGIONS] __initdata;
EXPORT_SYMBOL(node_data);
EXPORT_SYMBOL(numa_cpu_lookup_table);
EXPORT_SYMBOL(numa_memory_lookup_table);
EXPORT_SYMBOL(numa_cpumask_lookup_table);
int __init early_pfn_to_nid(unsigned long pfn)
{
unsigned int i;
for (i = 0; init_node_data[i].end_pfn; i++) {
unsigned long start_pfn = init_node_data[i].start_pfn;
unsigned long end_pfn = init_node_data[i].end_pfn;
if ((start_pfn <= pfn) && (pfn < end_pfn))
return init_node_data[i].nid;
}
return -1;
}
void __init add_region(unsigned int nid, unsigned long start_pfn,
unsigned long pages)
{
unsigned int i;
dbg("add_region nid %d start_pfn 0x%lx pages 0x%lx\n",
nid, start_pfn, pages);
for (i = 0; init_node_data[i].end_pfn; i++) {
if (init_node_data[i].nid != nid)
continue;
if (init_node_data[i].end_pfn == start_pfn) {
init_node_data[i].end_pfn += pages;
return;
}
if (init_node_data[i].start_pfn == (start_pfn + pages)) {
init_node_data[i].start_pfn -= pages;
return;
}
}
/*
* Leave last entry NULL so we dont iterate off the end (we use
* entry.end_pfn to terminate the walk).
*/
if (i >= (MAX_REGIONS - 1)) {
printk(KERN_ERR "WARNING: too many memory regions in "
"numa code, truncating\n");
return;
}
init_node_data[i].start_pfn = start_pfn;
init_node_data[i].end_pfn = start_pfn + pages;
init_node_data[i].nid = nid;
}
/* We assume init_node_data has no overlapping regions */
void __init get_region(unsigned int nid, unsigned long *start_pfn,
unsigned long *end_pfn, unsigned long *pages_present)
{
unsigned int i;
*start_pfn = -1UL;
*end_pfn = *pages_present = 0;
for (i = 0; init_node_data[i].end_pfn; i++) {
if (init_node_data[i].nid != nid)
continue;
*pages_present += init_node_data[i].end_pfn -
init_node_data[i].start_pfn;
if (init_node_data[i].start_pfn < *start_pfn)
*start_pfn = init_node_data[i].start_pfn;
if (init_node_data[i].end_pfn > *end_pfn)
*end_pfn = init_node_data[i].end_pfn;
}
/* We didnt find a matching region, return start/end as 0 */
if (*start_pfn == -1UL)
start_pfn = 0;
}
static inline void map_cpu_to_node(int cpu, int node)
{
numa_cpu_lookup_table[cpu] = node;
if (!(cpu_isset(cpu, numa_cpumask_lookup_table[node]))) {
if (!(cpu_isset(cpu, numa_cpumask_lookup_table[node])))
cpu_set(cpu, numa_cpumask_lookup_table[node]);
}
}
#ifdef CONFIG_HOTPLUG_CPU
@ -82,7 +152,7 @@ static void unmap_cpu_from_node(unsigned long cpu)
}
#endif /* CONFIG_HOTPLUG_CPU */
static struct device_node * __devinit find_cpu_node(unsigned int cpu)
static struct device_node *find_cpu_node(unsigned int cpu)
{
unsigned int hw_cpuid = get_hard_smp_processor_id(cpu);
struct device_node *cpu_node = NULL;
@ -209,7 +279,7 @@ static int __init get_mem_size_cells(void)
return rc;
}
static unsigned long read_n_cells(int n, unsigned int **buf)
static unsigned long __init read_n_cells(int n, unsigned int **buf)
{
unsigned long result = 0;
@ -291,7 +361,8 @@ static int cpu_numa_callback(struct notifier_block *nfb,
* or zero. If the returned value of size is 0 the region should be
* discarded as it lies wholy above the memory limit.
*/
static unsigned long __init numa_enforce_memory_limit(unsigned long start, unsigned long size)
static unsigned long __init numa_enforce_memory_limit(unsigned long start,
unsigned long size)
{
/*
* We use lmb_end_of_DRAM() in here instead of memory_limit because
@ -316,8 +387,7 @@ static int __init parse_numa_properties(void)
struct device_node *cpu = NULL;
struct device_node *memory = NULL;
int addr_cells, size_cells;
int max_domain = 0;
long entries = lmb_end_of_DRAM() >> MEMORY_INCREMENT_SHIFT;
int max_domain;
unsigned long i;
if (numa_enabled == 0) {
@ -325,13 +395,6 @@ static int __init parse_numa_properties(void)
return -1;
}
numa_memory_lookup_table =
(char *)abs_to_virt(lmb_alloc(entries * sizeof(char), 1));
memset(numa_memory_lookup_table, 0, entries * sizeof(char));
for (i = 0; i < entries ; i++)
numa_memory_lookup_table[i] = ARRAY_INITIALISER;
min_common_depth = find_min_common_depth();
dbg("NUMA associativity depth for CPU/Memory: %d\n", min_common_depth);
@ -383,9 +446,6 @@ new_range:
start = read_n_cells(addr_cells, &memcell_buf);
size = read_n_cells(size_cells, &memcell_buf);
start = _ALIGN_DOWN(start, MEMORY_INCREMENT);
size = _ALIGN_UP(size, MEMORY_INCREMENT);
numa_domain = of_node_numa_domain(memory);
if (numa_domain >= MAX_NUMNODES) {
@ -399,44 +459,15 @@ new_range:
if (max_domain < numa_domain)
max_domain = numa_domain;
if (! (size = numa_enforce_memory_limit(start, size))) {
if (!(size = numa_enforce_memory_limit(start, size))) {
if (--ranges)
goto new_range;
else
continue;
}
/*
* Initialize new node struct, or add to an existing one.
*/
if (init_node_data[numa_domain].node_end_pfn) {
if ((start / PAGE_SIZE) <
init_node_data[numa_domain].node_start_pfn)
init_node_data[numa_domain].node_start_pfn =
start / PAGE_SIZE;
if (((start / PAGE_SIZE) + (size / PAGE_SIZE)) >
init_node_data[numa_domain].node_end_pfn)
init_node_data[numa_domain].node_end_pfn =
(start / PAGE_SIZE) +
(size / PAGE_SIZE);
init_node_data[numa_domain].node_present_pages +=
size / PAGE_SIZE;
} else {
node_set_online(numa_domain);
init_node_data[numa_domain].node_start_pfn =
start / PAGE_SIZE;
init_node_data[numa_domain].node_end_pfn =
init_node_data[numa_domain].node_start_pfn +
size / PAGE_SIZE;
init_node_data[numa_domain].node_present_pages =
size / PAGE_SIZE;
}
for (i = start ; i < (start+size); i += MEMORY_INCREMENT)
numa_memory_lookup_table[i >> MEMORY_INCREMENT_SHIFT] =
numa_domain;
add_region(numa_domain, start >> PAGE_SHIFT,
size >> PAGE_SHIFT);
if (--ranges)
goto new_range;
@ -452,32 +483,15 @@ static void __init setup_nonnuma(void)
{
unsigned long top_of_ram = lmb_end_of_DRAM();
unsigned long total_ram = lmb_phys_mem_size();
unsigned long i;
printk(KERN_INFO "Top of RAM: 0x%lx, Total RAM: 0x%lx\n",
top_of_ram, total_ram);
printk(KERN_INFO "Memory hole size: %ldMB\n",
(top_of_ram - total_ram) >> 20);
if (!numa_memory_lookup_table) {
long entries = top_of_ram >> MEMORY_INCREMENT_SHIFT;
numa_memory_lookup_table =
(char *)abs_to_virt(lmb_alloc(entries * sizeof(char), 1));
memset(numa_memory_lookup_table, 0, entries * sizeof(char));
for (i = 0; i < entries ; i++)
numa_memory_lookup_table[i] = ARRAY_INITIALISER;
}
map_cpu_to_node(boot_cpuid, 0);
add_region(0, 0, lmb_end_of_DRAM() >> PAGE_SHIFT);
node_set_online(0);
init_node_data[0].node_start_pfn = 0;
init_node_data[0].node_end_pfn = lmb_end_of_DRAM() / PAGE_SIZE;
init_node_data[0].node_present_pages = total_ram / PAGE_SIZE;
for (i = 0 ; i < top_of_ram; i += MEMORY_INCREMENT)
numa_memory_lookup_table[i >> MEMORY_INCREMENT_SHIFT] = 0;
}
static void __init dump_numa_topology(void)
@ -495,8 +509,9 @@ static void __init dump_numa_topology(void)
count = 0;
for (i = 0; i < lmb_end_of_DRAM(); i += MEMORY_INCREMENT) {
if (numa_memory_lookup_table[i >> MEMORY_INCREMENT_SHIFT] == node) {
for (i = 0; i < lmb_end_of_DRAM();
i += (1 << SECTION_SIZE_BITS)) {
if (early_pfn_to_nid(i >> PAGE_SHIFT) == node) {
if (count == 0)
printk(" 0x%lx", i);
++count;
@ -521,10 +536,12 @@ static void __init dump_numa_topology(void)
*
* Returns the physical address of the memory.
*/
static unsigned long careful_allocation(int nid, unsigned long size,
unsigned long align, unsigned long end)
static void __init *careful_allocation(int nid, unsigned long size,
unsigned long align,
unsigned long end_pfn)
{
unsigned long ret = lmb_alloc_base(size, align, end);
int new_nid;
unsigned long ret = lmb_alloc_base(size, align, end_pfn << PAGE_SHIFT);
/* retry over all memory */
if (!ret)
@ -538,28 +555,27 @@ static unsigned long careful_allocation(int nid, unsigned long size,
* If the memory came from a previously allocated node, we must
* retry with the bootmem allocator.
*/
if (pa_to_nid(ret) < nid) {
nid = pa_to_nid(ret);
ret = (unsigned long)__alloc_bootmem_node(NODE_DATA(nid),
new_nid = early_pfn_to_nid(ret >> PAGE_SHIFT);
if (new_nid < nid) {
ret = (unsigned long)__alloc_bootmem_node(NODE_DATA(new_nid),
size, align, 0);
if (!ret)
panic("numa.c: cannot allocate %lu bytes on node %d",
size, nid);
size, new_nid);
ret = virt_to_abs(ret);
ret = __pa(ret);
dbg("alloc_bootmem %lx %lx\n", ret, size);
}
return ret;
return (void *)ret;
}
void __init do_init_bootmem(void)
{
int nid;
int addr_cells, size_cells;
struct device_node *memory = NULL;
unsigned int i;
static struct notifier_block ppc64_numa_nb = {
.notifier_call = cpu_numa_callback,
.priority = 1 /* Must run before sched domains notifier. */
@ -577,99 +593,66 @@ void __init do_init_bootmem(void)
register_cpu_notifier(&ppc64_numa_nb);
for_each_online_node(nid) {
unsigned long start_paddr, end_paddr;
int i;
unsigned long start_pfn, end_pfn, pages_present;
unsigned long bootmem_paddr;
unsigned long bootmap_pages;
start_paddr = init_node_data[nid].node_start_pfn * PAGE_SIZE;
end_paddr = init_node_data[nid].node_end_pfn * PAGE_SIZE;
get_region(nid, &start_pfn, &end_pfn, &pages_present);
/* Allocate the node structure node local if possible */
NODE_DATA(nid) = (struct pglist_data *)careful_allocation(nid,
NODE_DATA(nid) = careful_allocation(nid,
sizeof(struct pglist_data),
SMP_CACHE_BYTES, end_paddr);
NODE_DATA(nid) = abs_to_virt(NODE_DATA(nid));
SMP_CACHE_BYTES, end_pfn);
NODE_DATA(nid) = __va(NODE_DATA(nid));
memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
dbg("node %d\n", nid);
dbg("NODE_DATA() = %p\n", NODE_DATA(nid));
NODE_DATA(nid)->bdata = &plat_node_bdata[nid];
NODE_DATA(nid)->node_start_pfn =
init_node_data[nid].node_start_pfn;
NODE_DATA(nid)->node_spanned_pages =
end_paddr - start_paddr;
NODE_DATA(nid)->node_start_pfn = start_pfn;
NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
if (NODE_DATA(nid)->node_spanned_pages == 0)
continue;
dbg("start_paddr = %lx\n", start_paddr);
dbg("end_paddr = %lx\n", end_paddr);
dbg("start_paddr = %lx\n", start_pfn << PAGE_SHIFT);
dbg("end_paddr = %lx\n", end_pfn << PAGE_SHIFT);
bootmap_pages = bootmem_bootmap_pages((end_paddr - start_paddr) >> PAGE_SHIFT);
bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
bootmem_paddr = (unsigned long)careful_allocation(nid,
bootmap_pages << PAGE_SHIFT,
PAGE_SIZE, end_pfn);
memset(__va(bootmem_paddr), 0, bootmap_pages << PAGE_SHIFT);
bootmem_paddr = careful_allocation(nid,
bootmap_pages << PAGE_SHIFT,
PAGE_SIZE, end_paddr);
memset(abs_to_virt(bootmem_paddr), 0,
bootmap_pages << PAGE_SHIFT);
dbg("bootmap_paddr = %lx\n", bootmem_paddr);
init_bootmem_node(NODE_DATA(nid), bootmem_paddr >> PAGE_SHIFT,
start_paddr >> PAGE_SHIFT,
end_paddr >> PAGE_SHIFT);
start_pfn, end_pfn);
/*
* We need to do another scan of all memory sections to
* associate memory with the correct node.
*/
addr_cells = get_mem_addr_cells();
size_cells = get_mem_size_cells();
memory = NULL;
while ((memory = of_find_node_by_type(memory, "memory")) != NULL) {
unsigned long mem_start, mem_size;
int numa_domain, ranges;
unsigned int *memcell_buf;
unsigned int len;
/* Add free regions on this node */
for (i = 0; init_node_data[i].end_pfn; i++) {
unsigned long start, end;
memcell_buf = (unsigned int *)get_property(memory, "reg", &len);
if (!memcell_buf || len <= 0)
if (init_node_data[i].nid != nid)
continue;
ranges = memory->n_addrs; /* ranges in cell */
new_range:
mem_start = read_n_cells(addr_cells, &memcell_buf);
mem_size = read_n_cells(size_cells, &memcell_buf);
if (numa_enabled) {
numa_domain = of_node_numa_domain(memory);
if (numa_domain >= MAX_NUMNODES)
numa_domain = 0;
} else
numa_domain = 0;
start = init_node_data[i].start_pfn << PAGE_SHIFT;
end = init_node_data[i].end_pfn << PAGE_SHIFT;
if (numa_domain != nid)
continue;
mem_size = numa_enforce_memory_limit(mem_start, mem_size);
if (mem_size) {
dbg("free_bootmem %lx %lx\n", mem_start, mem_size);
free_bootmem_node(NODE_DATA(nid), mem_start, mem_size);
}
if (--ranges) /* process all ranges in cell */
goto new_range;
dbg("free_bootmem %lx %lx\n", start, end - start);
free_bootmem_node(NODE_DATA(nid), start, end - start);
}
/*
* Mark reserved regions on this node
*/
/* Mark reserved regions on this node */
for (i = 0; i < lmb.reserved.cnt; i++) {
unsigned long physbase = lmb.reserved.region[i].base;
unsigned long size = lmb.reserved.region[i].size;
unsigned long start_paddr = start_pfn << PAGE_SHIFT;
unsigned long end_paddr = end_pfn << PAGE_SHIFT;
if (pa_to_nid(physbase) != nid &&
pa_to_nid(physbase+size-1) != nid)
if (early_pfn_to_nid(physbase >> PAGE_SHIFT) != nid &&
early_pfn_to_nid((physbase+size-1) >> PAGE_SHIFT) != nid)
continue;
if (physbase < end_paddr &&
@ -689,46 +672,19 @@ new_range:
size);
}
}
/*
* This loop may look famaliar, but we have to do it again
* after marking our reserved memory to mark memory present
* for sparsemem.
*/
addr_cells = get_mem_addr_cells();
size_cells = get_mem_size_cells();
memory = NULL;
while ((memory = of_find_node_by_type(memory, "memory")) != NULL) {
unsigned long mem_start, mem_size;
int numa_domain, ranges;
unsigned int *memcell_buf;
unsigned int len;
memcell_buf = (unsigned int *)get_property(memory, "reg", &len);
if (!memcell_buf || len <= 0)
/* Add regions into sparsemem */
for (i = 0; init_node_data[i].end_pfn; i++) {
unsigned long start, end;
if (init_node_data[i].nid != nid)
continue;
ranges = memory->n_addrs; /* ranges in cell */
new_range2:
mem_start = read_n_cells(addr_cells, &memcell_buf);
mem_size = read_n_cells(size_cells, &memcell_buf);
if (numa_enabled) {
numa_domain = of_node_numa_domain(memory);
if (numa_domain >= MAX_NUMNODES)
numa_domain = 0;
} else
numa_domain = 0;
start = init_node_data[i].start_pfn;
end = init_node_data[i].end_pfn;
if (numa_domain != nid)
continue;
mem_size = numa_enforce_memory_limit(mem_start, mem_size);
memory_present(numa_domain, mem_start >> PAGE_SHIFT,
(mem_start + mem_size) >> PAGE_SHIFT);
if (--ranges) /* process all ranges in cell */
goto new_range2;
memory_present(nid, start, end);
}
}
}
@ -742,21 +698,18 @@ void __init paging_init(void)
memset(zholes_size, 0, sizeof(zholes_size));
for_each_online_node(nid) {
unsigned long start_pfn;
unsigned long end_pfn;
unsigned long start_pfn, end_pfn, pages_present;
start_pfn = init_node_data[nid].node_start_pfn;
end_pfn = init_node_data[nid].node_end_pfn;
get_region(nid, &start_pfn, &end_pfn, &pages_present);
zones_size[ZONE_DMA] = end_pfn - start_pfn;
zholes_size[ZONE_DMA] = zones_size[ZONE_DMA] -
init_node_data[nid].node_present_pages;
zholes_size[ZONE_DMA] = zones_size[ZONE_DMA] - pages_present;
dbg("free_area_init node %d %lx %lx (hole: %lx)\n", nid,
zones_size[ZONE_DMA], start_pfn, zholes_size[ZONE_DMA]);
free_area_init_node(nid, NODE_DATA(nid), zones_size,
start_pfn, zholes_size);
free_area_init_node(nid, NODE_DATA(nid), zones_size, start_pfn,
zholes_size);
}
}

13
arch/ppc64/Kconfig
View File

@ -279,17 +279,12 @@ config ARCH_FLATMEM_ENABLE
def_bool y
depends on !NUMA
config ARCH_DISCONTIGMEM_ENABLE
def_bool y
depends on SMP && PPC_PSERIES
config ARCH_DISCONTIGMEM_DEFAULT
def_bool y
depends on ARCH_DISCONTIGMEM_ENABLE
config ARCH_SPARSEMEM_ENABLE
def_bool y
depends on ARCH_DISCONTIGMEM_ENABLE
config ARCH_SPARSEMEM_DEFAULT
def_bool y
depends on NUMA
source "mm/Kconfig"

10
include/asm-powerpc/topology.h
View File

@ -9,15 +9,7 @@
static inline int cpu_to_node(int cpu)
{
int node;
node = numa_cpu_lookup_table[cpu];
#ifdef DEBUG_NUMA
BUG_ON(node == -1);
#endif
return node;
return numa_cpu_lookup_table[cpu];
}
#define parent_node(node) (node)

63
include/asm-ppc64/mmzone.h
View File

@ -8,15 +8,14 @@
#define _ASM_MMZONE_H_
#include <linux/config.h>
#include <asm/smp.h>
/* generic non-linear memory support:
/*
* generic non-linear memory support:
*
* 1) we will not split memory into more chunks than will fit into the
* flags field of the struct page
*/
#ifdef CONFIG_NEED_MULTIPLE_NODES
extern struct pglist_data *node_data[];
@ -30,41 +29,11 @@ extern struct pglist_data *node_data[];
*/
extern int numa_cpu_lookup_table[];
extern char *numa_memory_lookup_table;
extern cpumask_t numa_cpumask_lookup_table[];
#ifdef CONFIG_MEMORY_HOTPLUG
extern unsigned long max_pfn;
#endif
/* 16MB regions */
#define MEMORY_INCREMENT_SHIFT 24
#define MEMORY_INCREMENT (1UL << MEMORY_INCREMENT_SHIFT)
/* NUMA debugging, will not work on a DLPAR machine */
#undef DEBUG_NUMA
static inline int pa_to_nid(unsigned long pa)
{
int nid;
#ifdef CONFIG_MEMORY_HOTPLUG
/* kludge hot added sections default to node 0 */
if (pa >= (max_pfn << PAGE_SHIFT))
return 0;
#endif
nid = numa_memory_lookup_table[pa >> MEMORY_INCREMENT_SHIFT];
#ifdef DEBUG_NUMA
/* the physical address passed in is not in the map for the system */
if (nid == -1) {
printk("bad address: %lx\n", pa);
BUG();
}
#endif
return nid;
}
/*
* Following are macros that each numa implmentation must define.
*/
@ -72,36 +41,10 @@ static inline int pa_to_nid(unsigned long pa)
#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
#define node_end_pfn(nid) (NODE_DATA(nid)->node_end_pfn)
#ifdef CONFIG_DISCONTIGMEM
#define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn)
#define pfn_to_nid(pfn) pa_to_nid((unsigned long)(pfn) << PAGE_SHIFT)
/* Written this way to avoid evaluating arguments twice */
#define discontigmem_pfn_to_page(pfn) \
({ \
unsigned long __tmp = pfn; \
(NODE_DATA(pfn_to_nid(__tmp))->node_mem_map + \
node_localnr(__tmp, pfn_to_nid(__tmp))); \
})
#define discontigmem_page_to_pfn(p) \
({ \
struct page *__tmp = p; \
(((__tmp) - page_zone(__tmp)->zone_mem_map) + \
page_zone(__tmp)->zone_start_pfn); \
})
/* XXX fix for discontiguous physical memory */
#define discontigmem_pfn_valid(pfn) ((pfn) < num_physpages)
#endif /* CONFIG_DISCONTIGMEM */
#endif /* CONFIG_NEED_MULTIPLE_NODES */
#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
#define early_pfn_to_nid(pfn) pa_to_nid(((unsigned long)pfn) << PAGE_SHIFT)
extern int __init early_pfn_to_nid(unsigned long pfn);
#endif
#endif /* _ASM_MMZONE_H_ */

5
include/asm-ppc64/page.h
View File

@ -279,11 +279,6 @@ extern u64 ppc64_pft_size; /* Log 2 of page table size */
#define __va(x) ((void *)((unsigned long)(x) + KERNELBASE))
#ifdef CONFIG_DISCONTIGMEM
#define page_to_pfn(page) discontigmem_page_to_pfn(page)
#define pfn_to_page(pfn) discontigmem_pfn_to_page(pfn)
#define pfn_valid(pfn) discontigmem_pfn_valid(pfn)
#endif
#ifdef CONFIG_FLATMEM
#define pfn_to_page(pfn) (mem_map + (pfn))
#define page_to_pfn(page) ((unsigned long)((page) - mem_map))