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Merge branch 'x86/numa' into x86/urgent

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Merge reason: Topic is ready for upstream.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2011-01-10 09:35:57 +01:00
commit 9adcc4a127
6 changed files with 227 additions and 65 deletions
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11
arch/x86/include/asm/acpi.h
View File

@ -185,17 +185,16 @@ struct bootnode;
#ifdef CONFIG_ACPI_NUMA
extern int acpi_numa;
extern int acpi_get_nodes(struct bootnode *physnodes);
extern void acpi_get_nodes(struct bootnode *physnodes, unsigned long start,
unsigned long end);
extern int acpi_scan_nodes(unsigned long start, unsigned long end);
#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
#ifdef CONFIG_NUMA_EMU
extern void acpi_fake_nodes(const struct bootnode *fake_nodes,
int num_nodes);
#else
static inline void acpi_fake_nodes(const struct bootnode *fake_nodes,
int num_nodes)
{
}
#endif
#endif /* CONFIG_ACPI_NUMA */
#define acpi_unlazy_tlb(x) leave_mm(x)

6
arch/x86/include/asm/amd_nb.h
View File

@ -9,10 +9,14 @@ struct bootnode;
extern int early_is_amd_nb(u32 value);
extern int amd_cache_northbridges(void);
extern void amd_flush_garts(void);
extern int amd_get_nodes(struct bootnode *nodes);
extern int amd_numa_init(unsigned long start_pfn, unsigned long end_pfn);
extern int amd_scan_nodes(void);
#ifdef CONFIG_NUMA_EMU
extern void amd_fake_nodes(const struct bootnode *nodes, int nr_nodes);
extern void amd_get_nodes(struct bootnode *nodes);
#endif
struct amd_northbridge {
struct pci_dev *misc;
};

2
arch/x86/include/asm/numa_64.h
View File

@ -38,7 +38,7 @@ extern void __cpuinit numa_add_cpu(int cpu);
extern void __cpuinit numa_remove_cpu(int cpu);
#ifdef CONFIG_NUMA_EMU
#define FAKE_NODE_MIN_SIZE ((u64)64 << 20)
#define FAKE_NODE_MIN_SIZE ((u64)32 << 20)
#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
#endif /* CONFIG_NUMA_EMU */
#else

86
arch/x86/mm/amdtopology_64.c
View File

@ -27,6 +27,7 @@
#include <asm/amd_nb.h>
static struct bootnode __initdata nodes[8];
static unsigned char __initdata nodeids[8];
static nodemask_t __initdata nodes_parsed = NODE_MASK_NONE;
static __init int find_northbridge(void)
@ -68,19 +69,6 @@ static __init void early_get_boot_cpu_id(void)
#endif
}
int __init amd_get_nodes(struct bootnode *physnodes)
{
int i;
int ret = 0;
for_each_node_mask(i, nodes_parsed) {
physnodes[ret].start = nodes[i].start;
physnodes[ret].end = nodes[i].end;
ret++;
}
return ret;
}
int __init amd_numa_init(unsigned long start_pfn, unsigned long end_pfn)
{
unsigned long start = PFN_PHYS(start_pfn);
@ -113,7 +101,7 @@ int __init amd_numa_init(unsigned long start_pfn, unsigned long end_pfn)
base = read_pci_config(0, nb, 1, 0x40 + i*8);
limit = read_pci_config(0, nb, 1, 0x44 + i*8);
nodeid = limit & 7;
nodeids[i] = nodeid = limit & 7;
if ((base & 3) == 0) {
if (i < numnodes)
pr_info("Skipping disabled node %d\n", i);
@ -193,6 +181,76 @@ int __init amd_numa_init(unsigned long start_pfn, unsigned long end_pfn)
return 0;
}
#ifdef CONFIG_NUMA_EMU
static s16 fake_apicid_to_node[MAX_LOCAL_APIC] __initdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
};
void __init amd_get_nodes(struct bootnode *physnodes)
{
int i;
for_each_node_mask(i, nodes_parsed) {
physnodes[i].start = nodes[i].start;
physnodes[i].end = nodes[i].end;
}
}
static int __init find_node_by_addr(unsigned long addr)
{
int ret = NUMA_NO_NODE;
int i;
for (i = 0; i < 8; i++)
if (addr >= nodes[i].start && addr < nodes[i].end) {
ret = i;
break;
}
return ret;
}
/*
* For NUMA emulation, fake proximity domain (_PXM) to node id mappings must be
* setup to represent the physical topology but reflect the emulated
* environment. For each emulated node, the real node which it appears on is
* found and a fake pxm to nid mapping is created which mirrors the actual
* locality. node_distance() then represents the correct distances between
* emulated nodes by using the fake acpi mappings to pxms.
*/
void __init amd_fake_nodes(const struct bootnode *nodes, int nr_nodes)
{
unsigned int bits;
unsigned int cores;
unsigned int apicid_base = 0;
int i;
bits = boot_cpu_data.x86_coreid_bits;
cores = 1 << bits;
early_get_boot_cpu_id();
if (boot_cpu_physical_apicid > 0)
apicid_base = boot_cpu_physical_apicid;
for (i = 0; i < nr_nodes; i++) {
int index;
int nid;
int j;
nid = find_node_by_addr(nodes[i].start);
if (nid == NUMA_NO_NODE)
continue;
index = nodeids[nid] << bits;
if (fake_apicid_to_node[index + apicid_base] == NUMA_NO_NODE)
for (j = apicid_base; j < cores + apicid_base; j++)
fake_apicid_to_node[index + j] = i;
#ifdef CONFIG_ACPI_NUMA
__acpi_map_pxm_to_node(nid, i);
#endif
}
memcpy(apicid_to_node, fake_apicid_to_node, sizeof(apicid_to_node));
}
#endif /* CONFIG_NUMA_EMU */
int __init amd_scan_nodes(void)
{
unsigned int bits;

161
arch/x86/mm/numa_64.c
View File

@ -260,30 +260,30 @@ void __init numa_init_array(void)
#ifdef CONFIG_NUMA_EMU
/* Numa emulation */
static struct bootnode nodes[MAX_NUMNODES] __initdata;
static struct bootnode physnodes[MAX_NUMNODES] __initdata;
static struct bootnode physnodes[MAX_NUMNODES] __cpuinitdata;
static char *cmdline __initdata;
static int __init setup_physnodes(unsigned long start, unsigned long end,
int acpi, int amd)
{
int nr_nodes = 0;
int ret = 0;
int i;
memset(physnodes, 0, sizeof(physnodes));
#ifdef CONFIG_ACPI_NUMA
if (acpi)
nr_nodes = acpi_get_nodes(physnodes);
acpi_get_nodes(physnodes, start, end);
#endif
#ifdef CONFIG_AMD_NUMA
if (amd)
nr_nodes = amd_get_nodes(physnodes);
amd_get_nodes(physnodes);
#endif
/*
* Basic sanity checking on the physical node map: there may be errors
* if the SRAT or AMD code incorrectly reported the topology or the mem=
* kernel parameter is used.
*/
for (i = 0; i < nr_nodes; i++) {
for (i = 0; i < MAX_NUMNODES; i++) {
if (physnodes[i].start == physnodes[i].end)
continue;
if (physnodes[i].start > end) {
@ -298,17 +298,6 @@ static int __init setup_physnodes(unsigned long start, unsigned long end,
physnodes[i].start = start;
if (physnodes[i].end > end)
physnodes[i].end = end;
}
/*
* Remove all nodes that have no memory or were truncated because of the
* limited address range.
*/
for (i = 0; i < nr_nodes; i++) {
if (physnodes[i].start == physnodes[i].end)
continue;
physnodes[ret].start = physnodes[i].start;
physnodes[ret].end = physnodes[i].end;
ret++;
}
@ -324,6 +313,24 @@ static int __init setup_physnodes(unsigned long start, unsigned long end,
return ret;
}
static void __init fake_physnodes(int acpi, int amd, int nr_nodes)
{
int i;
BUG_ON(acpi && amd);
#ifdef CONFIG_ACPI_NUMA
if (acpi)
acpi_fake_nodes(nodes, nr_nodes);
#endif
#ifdef CONFIG_AMD_NUMA
if (amd)
amd_fake_nodes(nodes, nr_nodes);
#endif
if (!acpi && !amd)
for (i = 0; i < nr_cpu_ids; i++)
numa_set_node(i, 0);
}
/*
* Setups up nid to range from addr to addr + size. If the end
* boundary is greater than max_addr, then max_addr is used instead.
@ -352,8 +359,7 @@ static int __init setup_node_range(int nid, u64 *addr, u64 size, u64 max_addr)
* Sets up nr_nodes fake nodes interleaved over physical nodes ranging from addr
* to max_addr. The return value is the number of nodes allocated.
*/
static int __init split_nodes_interleave(u64 addr, u64 max_addr,
int nr_phys_nodes, int nr_nodes)
static int __init split_nodes_interleave(u64 addr, u64 max_addr, int nr_nodes)
{
nodemask_t physnode_mask = NODE_MASK_NONE;
u64 size;
@ -384,7 +390,7 @@ static int __init split_nodes_interleave(u64 addr, u64 max_addr,
return -1;
}
for (i = 0; i < nr_phys_nodes; i++)
for (i = 0; i < MAX_NUMNODES; i++)
if (physnodes[i].start != physnodes[i].end)
node_set(i, physnode_mask);
@ -553,11 +559,9 @@ static int __init numa_emulation(unsigned long start_pfn,
{
u64 addr = start_pfn << PAGE_SHIFT;
u64 max_addr = last_pfn << PAGE_SHIFT;
int num_phys_nodes;
int num_nodes;
int i;
num_phys_nodes = setup_physnodes(addr, max_addr, acpi, amd);
/*
* If the numa=fake command-line contains a 'M' or 'G', it represents
* the fixed node size. Otherwise, if it is just a single number N,
@ -572,7 +576,7 @@ static int __init numa_emulation(unsigned long start_pfn,
unsigned long n;
n = simple_strtoul(cmdline, NULL, 0);
num_nodes = split_nodes_interleave(addr, max_addr, num_phys_nodes, n);
num_nodes = split_nodes_interleave(addr, max_addr, n);
}
if (num_nodes < 0)
@ -595,7 +599,8 @@ static int __init numa_emulation(unsigned long start_pfn,
nodes[i].end >> PAGE_SHIFT);
setup_node_bootmem(i, nodes[i].start, nodes[i].end);
}
acpi_fake_nodes(nodes, num_nodes);
setup_physnodes(addr, max_addr, acpi, amd);
fake_physnodes(acpi, amd, num_nodes);
numa_init_array();
return 0;
}
@ -610,8 +615,12 @@ void __init initmem_init(unsigned long start_pfn, unsigned long last_pfn,
nodes_clear(node_online_map);
#ifdef CONFIG_NUMA_EMU
setup_physnodes(start_pfn << PAGE_SHIFT, last_pfn << PAGE_SHIFT,
acpi, amd);
if (cmdline && !numa_emulation(start_pfn, last_pfn, acpi, amd))
return;
setup_physnodes(start_pfn << PAGE_SHIFT, last_pfn << PAGE_SHIFT,
acpi, amd);
nodes_clear(node_possible_map);
nodes_clear(node_online_map);
#endif
@ -767,6 +776,7 @@ void __cpuinit numa_clear_node(int cpu)
#ifndef CONFIG_DEBUG_PER_CPU_MAPS
#ifndef CONFIG_NUMA_EMU
void __cpuinit numa_add_cpu(int cpu)
{
cpumask_set_cpu(cpu, node_to_cpumask_map[early_cpu_to_node(cpu)]);
@ -776,34 +786,115 @@ void __cpuinit numa_remove_cpu(int cpu)
{
cpumask_clear_cpu(cpu, node_to_cpumask_map[early_cpu_to_node(cpu)]);
}
#else
void __cpuinit numa_add_cpu(int cpu)
{
unsigned long addr;
u16 apicid;
int physnid;
int nid = NUMA_NO_NODE;
apicid = early_per_cpu(x86_cpu_to_apicid, cpu);
if (apicid != BAD_APICID)
nid = apicid_to_node[apicid];
if (nid == NUMA_NO_NODE)
nid = early_cpu_to_node(cpu);
BUG_ON(nid == NUMA_NO_NODE || !node_online(nid));
/*
* Use the starting address of the emulated node to find which physical
* node it is allocated on.
*/
addr = node_start_pfn(nid) << PAGE_SHIFT;
for (physnid = 0; physnid < MAX_NUMNODES; physnid++)
if (addr >= physnodes[physnid].start &&
addr < physnodes[physnid].end)
break;
/*
* Map the cpu to each emulated node that is allocated on the physical
* node of the cpu's apic id.
*/
for_each_online_node(nid) {
addr = node_start_pfn(nid) << PAGE_SHIFT;
if (addr >= physnodes[physnid].start &&
addr < physnodes[physnid].end)
cpumask_set_cpu(cpu, node_to_cpumask_map[nid]);
}
}
void __cpuinit numa_remove_cpu(int cpu)
{
int i;
for_each_online_node(i)
cpumask_clear_cpu(cpu, node_to_cpumask_map[i]);
}
#endif /* !CONFIG_NUMA_EMU */
#else /* CONFIG_DEBUG_PER_CPU_MAPS */
/*
* --------- debug versions of the numa functions ---------
*/
static void __cpuinit numa_set_cpumask(int cpu, int enable)
static struct cpumask __cpuinit *debug_cpumask_set_cpu(int cpu, int enable)
{
int node = early_cpu_to_node(cpu);
struct cpumask *mask;
char buf[64];
mask = node_to_cpumask_map[node];
if (mask == NULL) {
printk(KERN_ERR "node_to_cpumask_map[%i] NULL\n", node);
if (!mask) {
pr_err("node_to_cpumask_map[%i] NULL\n", node);
dump_stack();
return;
return NULL;
}
cpulist_scnprintf(buf, sizeof(buf), mask);
printk(KERN_DEBUG "%s cpu %d node %d: mask now %s\n",
enable ? "numa_add_cpu" : "numa_remove_cpu",
cpu, node, buf);
return mask;
}
/*
* --------- debug versions of the numa functions ---------
*/
#ifndef CONFIG_NUMA_EMU
static void __cpuinit numa_set_cpumask(int cpu, int enable)
{
struct cpumask *mask;
mask = debug_cpumask_set_cpu(cpu, enable);
if (!mask)
return;
if (enable)
cpumask_set_cpu(cpu, mask);
else
cpumask_clear_cpu(cpu, mask);
cpulist_scnprintf(buf, sizeof(buf), mask);
printk(KERN_DEBUG "%s cpu %d node %d: mask now %s\n",
enable ? "numa_add_cpu" : "numa_remove_cpu", cpu, node, buf);
}
#else
static void __cpuinit numa_set_cpumask(int cpu, int enable)
{
int node = early_cpu_to_node(cpu);
struct cpumask *mask;
int i;
for_each_online_node(i) {
unsigned long addr;
addr = node_start_pfn(i) << PAGE_SHIFT;
if (addr < physnodes[node].start ||
addr >= physnodes[node].end)
continue;
mask = debug_cpumask_set_cpu(cpu, enable);
if (!mask)
return;
if (enable)
cpumask_set_cpu(cpu, mask);
else
cpumask_clear_cpu(cpu, mask);
}
}
#endif /* CONFIG_NUMA_EMU */
void __cpuinit numa_add_cpu(int cpu)
{

26
arch/x86/mm/srat_64.c
View File

@ -349,18 +349,19 @@ static int __init nodes_cover_memory(const struct bootnode *nodes)
void __init acpi_numa_arch_fixup(void) {}
int __init acpi_get_nodes(struct bootnode *physnodes)
#ifdef CONFIG_NUMA_EMU
void __init acpi_get_nodes(struct bootnode *physnodes, unsigned long start,
unsigned long end)
{
int i;
int ret = 0;
for_each_node_mask(i, nodes_parsed) {
physnodes[ret].start = nodes[i].start;
physnodes[ret].end = nodes[i].end;
ret++;
cutoff_node(i, start, end);
physnodes[i].start = nodes[i].start;
physnodes[i].end = nodes[i].end;
}
return ret;
}
#endif /* CONFIG_NUMA_EMU */
/* Use the information discovered above to actually set up the nodes. */
int __init acpi_scan_nodes(unsigned long start, unsigned long end)
@ -505,8 +506,6 @@ void __init acpi_fake_nodes(const struct bootnode *fake_nodes, int num_nodes)
{
int i, j;
printk(KERN_INFO "Faking PXM affinity for fake nodes on real "
"topology.\n");
for (i = 0; i < num_nodes; i++) {
int nid, pxm;
@ -526,6 +525,17 @@ void __init acpi_fake_nodes(const struct bootnode *fake_nodes, int num_nodes)
fake_apicid_to_node[j] == NUMA_NO_NODE)
fake_apicid_to_node[j] = i;
}
/*
* If there are apicid-to-node mappings for physical nodes that do not
* have a corresponding emulated node, it should default to a guaranteed
* value.
*/
for (i = 0; i < MAX_LOCAL_APIC; i++)
if (apicid_to_node[i] != NUMA_NO_NODE &&
fake_apicid_to_node[i] == NUMA_NO_NODE)
fake_apicid_to_node[i] = 0;
for (i = 0; i < num_nodes; i++)
__acpi_map_pxm_to_node(fake_node_to_pxm_map[i], i);
memcpy(apicid_to_node, fake_apicid_to_node, sizeof(apicid_to_node));