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[PATCH] Unify pxm_to_node() and node_to_pxm()

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Consolidate the various arch-specific implementations of pxm_to_node() and
node_to_pxm() into a single generic version.

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: "Brown, Len" <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Yasunori Goto 2006-06-23 02:03:19 -07:00 committed by Linus Torvalds
parent d6277db4ab
commit 762834e8bf
12 changed files with 102 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/i386/Kconfig
View File

@ -173,6 +173,12 @@ config ACPI_SRAT
bool
default y
depends on NUMA && (X86_SUMMIT || X86_GENERICARCH)
select ACPI_NUMA
config HAVE_ARCH_PARSE_SRAT
bool
default y
depends on ACPI_SRAT
config X86_SUMMIT_NUMA
bool

19
arch/i386/kernel/srat.c
View File

@ -39,7 +39,6 @@
#define NODE_ARRAY_OFFSET(x) ((x) % 8) /* 8 bits/char */
#define BMAP_SET(bmap, bit) ((bmap)[NODE_ARRAY_INDEX(bit)] |= 1 << NODE_ARRAY_OFFSET(bit))
#define BMAP_TEST(bmap, bit) ((bmap)[NODE_ARRAY_INDEX(bit)] & (1 << NODE_ARRAY_OFFSET(bit)))
#define MAX_PXM_DOMAINS 256 /* 1 byte and no promises about values */
/* bitmap length; _PXM is at most 255 */
#define PXM_BITMAP_LEN (MAX_PXM_DOMAINS / 8)
static u8 pxm_bitmap[PXM_BITMAP_LEN]; /* bitmap of proximity domains */
@ -213,19 +212,11 @@ static __init void node_read_chunk(int nid, struct node_memory_chunk_s *memory_c
node_end_pfn[nid] = memory_chunk->end_pfn;
}
static u8 pxm_to_nid_map[MAX_PXM_DOMAINS];/* _PXM to logical node ID map */
int pxm_to_node(int pxm)
{
return pxm_to_nid_map[pxm];
}
/* Parse the ACPI Static Resource Affinity Table */
static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
{
u8 *start, *end, *p;
int i, j, nid;
u8 nid_to_pxm_map[MAX_NUMNODES];/* logical node ID to _PXM map */
start = (u8 *)(&(sratp->reserved) + 1); /* skip header */
p = start;
@ -235,10 +226,6 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
memset(node_memory_chunk, 0, sizeof(node_memory_chunk));
memset(zholes_size, 0, sizeof(zholes_size));
/* -1 in these maps means not available */
memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
num_memory_chunks = 0;
while (p < end) {
switch (*p) {
@ -278,9 +265,7 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
nodes_clear(node_online_map);
for (i = 0; i < MAX_PXM_DOMAINS; i++) {
if (BMAP_TEST(pxm_bitmap, i)) {
nid = num_online_nodes();
pxm_to_nid_map[i] = nid;
nid_to_pxm_map[nid] = i;
int nid = acpi_map_pxm_to_node(i);
node_set_online(nid);
}
}
@ -288,7 +273,7 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
/* set cnode id in memory chunk structure */
for (i = 0; i < num_memory_chunks; i++)
node_memory_chunk[i].nid = pxm_to_nid_map[node_memory_chunk[i].pxm];
node_memory_chunk[i].nid = pxm_to_node(node_memory_chunk[i].pxm);
printk("pxm bitmap: ");
for (i = 0; i < sizeof(pxm_bitmap); i++) {

2
arch/ia64/hp/common/sba_iommu.c
View File

@ -1958,7 +1958,7 @@ sba_map_ioc_to_node(struct ioc *ioc, acpi_handle handle)
if (pxm < 0)
return;
node = pxm_to_nid_map[pxm];
node = pxm_to_node(pxm);
if (node >= MAX_NUMNODES || !node_online(node))
return;

24
arch/ia64/kernel/acpi.c
View File

@ -415,9 +415,6 @@ static int __initdata srat_num_cpus; /* number of cpus */
static u32 __devinitdata pxm_flag[PXM_FLAG_LEN];
#define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
#define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
/* maps to convert between proximity domain and logical node ID */
int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
int __initdata nid_to_pxm_map[MAX_NUMNODES];
static struct acpi_table_slit __initdata *slit_table;
static int get_processor_proximity_domain(struct acpi_table_processor_affinity *pa)
@ -533,22 +530,17 @@ void __init acpi_numa_arch_fixup(void)
* MCD - This can probably be dropped now. No need for pxm ID to node ID
* mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
*/
/* calculate total number of nodes in system from PXM bitmap */
memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
nodes_clear(node_online_map);
for (i = 0; i < MAX_PXM_DOMAINS; i++) {
if (pxm_bit_test(i)) {
int nid = num_online_nodes();
pxm_to_nid_map[i] = nid;
nid_to_pxm_map[nid] = i;
int nid = acpi_map_pxm_to_node(i);
node_set_online(nid);
}
}
/* set logical node id in memory chunk structure */
for (i = 0; i < num_node_memblks; i++)
node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid];
node_memblk[i].nid = pxm_to_node(node_memblk[i].nid);
/* assign memory bank numbers for each chunk on each node */
for_each_online_node(i) {
@ -562,7 +554,7 @@ void __init acpi_numa_arch_fixup(void)
/* set logical node id in cpu structure */
for (i = 0; i < srat_num_cpus; i++)
node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid];
node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid);
printk(KERN_INFO "Number of logical nodes in system = %d\n",
num_online_nodes());
@ -575,11 +567,11 @@ void __init acpi_numa_arch_fixup(void)
for (i = 0; i < slit_table->localities; i++) {
if (!pxm_bit_test(i))
continue;
node_from = pxm_to_nid_map[i];
node_from = pxm_to_node(i);
for (j = 0; j < slit_table->localities; j++) {
if (!pxm_bit_test(j))
continue;
node_to = pxm_to_nid_map[j];
node_to = pxm_to_node(j);
node_distance(node_from, node_to) =
slit_table->entry[i * slit_table->localities + j];
}
@ -785,9 +777,9 @@ int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
/*
* Assuming that the container driver would have set the proximity
* domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag
* domain and would have initialized pxm_to_node(pxm_id) && pxm_flag
*/
node_cpuid[cpu].nid = (pxm_id < 0) ? 0 : pxm_to_nid_map[pxm_id];
node_cpuid[cpu].nid = (pxm_id < 0) ? 0 : pxm_to_node(pxm_id);
node_cpuid[cpu].phys_id = physid;
#endif
@ -966,7 +958,7 @@ acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret)
if (pxm < 0)
return AE_OK;
node = pxm_to_nid_map[pxm];
node = pxm_to_node(pxm);
if (node >= MAX_NUMNODES || !node_online(node) ||
cpus_empty(node_to_cpumask(node)))

2
arch/ia64/pci/pci.c
View File

@ -352,7 +352,7 @@ pci_acpi_scan_root(struct acpi_device *device, int domain, int bus)
pxm = acpi_get_pxm(controller->acpi_handle);
#ifdef CONFIG_NUMA
if (pxm >= 0)
controller->node = pxm_to_nid_map[pxm];
controller->node = pxm_to_node(pxm);
#endif
acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,

4
arch/ia64/sn/kernel/setup.c
View File

@ -139,7 +139,7 @@ static int __init pxm_to_nasid(int pxm)
int i;
int nid;
nid = pxm_to_nid_map[pxm];
nid = pxm_to_node(pxm);
for (i = 0; i < num_node_memblks; i++) {
if (node_memblk[i].nid == nid) {
return NASID_GET(node_memblk[i].start_paddr);
@ -704,7 +704,7 @@ void __init build_cnode_tables(void)
* cnode == node for all C & M bricks.
*/
for_each_online_node(node) {
nasid = pxm_to_nasid(nid_to_pxm_map[node]);
nasid = pxm_to_nasid(node_to_pxm(node));
sn_cnodeid_to_nasid[node] = nasid;
physical_node_map[nasid] = node;
}

33
arch/x86_64/mm/srat.c
View File

@ -30,7 +30,6 @@
static struct acpi_table_slit *acpi_slit;
static nodemask_t nodes_parsed __initdata;
static nodemask_t nodes_found __initdata;
static struct bootnode nodes[MAX_NUMNODES] __initdata;
static struct bootnode nodes_add[MAX_NUMNODES] __initdata;
static int found_add_area __initdata;
@ -38,33 +37,14 @@ int hotadd_percent __initdata = 0;
#ifndef RESERVE_HOTADD
#define hotadd_percent 0 /* Ignore all settings */
#endif
static u8 pxm2node[256] = { [0 ... 255] = 0xff };
/* Too small nodes confuse the VM badly. Usually they result
from BIOS bugs. */
#define NODE_MIN_SIZE (4*1024*1024)
static int node_to_pxm(int n);
int pxm_to_node(int pxm)
{
if ((unsigned)pxm >= 256)
return -1;
/* Extend 0xff to (int)-1 */
return (signed char)pxm2node[pxm];
}
static __init int setup_node(int pxm)
{
unsigned node = pxm2node[pxm];
if (node == 0xff) {
if (nodes_weight(nodes_found) >= MAX_NUMNODES)
return -1;
node = first_unset_node(nodes_found);
node_set(node, nodes_found);
pxm2node[pxm] = node;
}
return pxm2node[pxm];
return acpi_map_pxm_to_node(pxm);
}
static __init int conflicting_nodes(unsigned long start, unsigned long end)
@ -440,17 +420,6 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end)
return 0;
}
static int node_to_pxm(int n)
{
int i;
if (pxm2node[n] == n)
return n;
for (i = 0; i < 256; i++)
if (pxm2node[i] == n)
return i;
return 0;
}
void __init srat_reserve_add_area(int nodeid)
{
if (found_add_area && nodes_add[nodeid].end) {

2
drivers/acpi/Kconfig
View File

@ -162,7 +162,7 @@ config ACPI_THERMAL
config ACPI_NUMA
bool "NUMA support"
depends on NUMA
depends on (IA64 || X86_64)
depends on (X86 || IA64)
default y if IA64_GENERIC || IA64_SGI_SN2
config ACPI_ASUS

48
drivers/acpi/numa.c
View File

@ -36,12 +36,60 @@
#define _COMPONENT ACPI_NUMA
ACPI_MODULE_NAME("numa")
static nodemask_t nodes_found_map = NODE_MASK_NONE;
#define PXM_INVAL -1
#define NID_INVAL -1
/* maps to convert between proximity domain and logical node ID */
int __cpuinitdata pxm_to_node_map[MAX_PXM_DOMAINS]
= { [0 ... MAX_PXM_DOMAINS - 1] = NID_INVAL };
int __cpuinitdata node_to_pxm_map[MAX_NUMNODES]
= { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
extern int __init acpi_table_parse_madt_family(enum acpi_table_id id,
unsigned long madt_size,
int entry_id,
acpi_madt_entry_handler handler,
unsigned int max_entries);
int __cpuinit pxm_to_node(int pxm)
{
if (pxm < 0)
return NID_INVAL;
return pxm_to_node_map[pxm];
}
int __cpuinit node_to_pxm(int node)
{
if (node < 0)
return PXM_INVAL;
return node_to_pxm_map[node];
}
int __cpuinit acpi_map_pxm_to_node(int pxm)
{
int node = pxm_to_node_map[pxm];
if (node < 0){
if (nodes_weight(nodes_found_map) >= MAX_NUMNODES)
return NID_INVAL;
node = first_unset_node(nodes_found_map);
pxm_to_node_map[pxm] = node;
node_to_pxm_map[node] = pxm;
node_set(node, nodes_found_map);
}
return node;
}
void __cpuinit acpi_unmap_pxm_to_node(int node)
{
int pxm = node_to_pxm_map[node];
pxm_to_node_map[pxm] = NID_INVAL;
node_to_pxm_map[node] = PXM_INVAL;
node_clear(node, nodes_found_map);
}
void __init acpi_table_print_srat_entry(acpi_table_entry_header * header)
{

23
include/acpi/acpi_numa.h Normal file
View File

@ -0,0 +1,23 @@
#ifndef __ACPI_NUMA_H
#define __ACPI_NUMA_H
#ifdef CONFIG_ACPI_NUMA
#include <linux/kernel.h>
/* Proximity bitmap length */
#if MAX_NUMNODES > 256
#define MAX_PXM_DOMAINS MAX_NUMNODES
#else
#define MAX_PXM_DOMAINS (256) /* Old pxm spec is defined 8 bit */
#endif
extern int __cpuinitdata pxm_to_node_map[MAX_PXM_DOMAINS];
extern int __cpuinitdata node_to_pxm_map[MAX_NUMNODES];
extern int __cpuinit pxm_to_node(int);
extern int __cpuinit node_to_pxm(int);
extern int __cpuinit acpi_map_pxm_to_node(int);
extern void __cpuinit acpi_unmap_pxm_to_node(int);
#endif /* CONFIG_ACPI_NUMA */
#endif /* __ACP_NUMA_H */

1
include/asm-x86_64/numa.h
View File

@ -8,7 +8,6 @@ struct bootnode {
};
extern int compute_hash_shift(struct bootnode *nodes, int numnodes);
extern int pxm_to_node(int nid);
#define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))

9
include/linux/acpi.h
View File

@ -37,6 +37,7 @@
#include <acpi/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_numa.h>
#include <asm/acpi.h>
@ -407,10 +408,18 @@ void acpi_table_print_madt_entry (acpi_table_entry_header *madt);
void acpi_table_print_srat_entry (acpi_table_entry_header *srat);
/* the following four functions are architecture-dependent */
#ifdef CONFIG_HAVE_ARCH_PARSE_SRAT
#define NR_NODE_MEMBLKS MAX_NUMNODES
#define acpi_numa_slit_init(slit) do {} while (0)
#define acpi_numa_processor_affinity_init(pa) do {} while (0)
#define acpi_numa_memory_affinity_init(ma) do {} while (0)
#define acpi_numa_arch_fixup() do {} while (0)
#else
void acpi_numa_slit_init (struct acpi_table_slit *slit);
void acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa);
void acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma);
void acpi_numa_arch_fixup(void);
#endif
#ifdef CONFIG_ACPI_HOTPLUG_CPU
/* Arch dependent functions for cpu hotplug support */