* [PATCH v3 1/3] x86/numa: Allow arbitrary value of PXM in PXM<->node mapping
2015-02-25 23:41 [PATCH v3 0/3] Updates to pxm2node mapping and nodeID sizing Boris Ostrovsky
@ 2015-02-25 23:41 ` Boris Ostrovsky
2015-02-26 8:38 ` Jan Beulich
2015-02-26 9:06 ` Dario Faggioli
2015-02-25 23:41 ` [PATCH v3 2/3] x86/numa: Adjust datatypes for node and pxm Boris Ostrovsky
2015-02-25 23:41 ` [PATCH v3 3/3] mm: MEMF_node should handle changes in nodeid_t size Boris Ostrovsky
2 siblings, 2 replies; 6+ messages in thread
From: Boris Ostrovsky @ 2015-02-25 23:41 UTC (permalink / raw)
To: keir, jbeulich, yang.z.zhang, kevin.tian, ian.campbell,
stefano.stabellini, tim
Cc: Andrew.Cooper3, dario.faggioli, boris.ostrovsky, xen-devel
ACPI defines proximity domain identifier as a 32-bit integer. While
in most cases the values will be zero-based this is not guaranteed,
making current pxm2node[256] mapping structure not appropriate.
We will instead use MAX_NUMNODES-sized array of struct pxm2node to
store PXM-to-node mapping. To accommodate common case of zero-based
and contiguios PXMs we will, whenever possible, try to use PXM as
index into this array array for fast lookups.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
---
Changes in v3:
* Renamed p2n to pxm2node (and struct pxm2node to struct pxm_to_node)
* Changed node type in pxm_to_node to u8
* pxm_to_node(), setup_node() and node_to_pxm()) use unsigned as node
argument
* Reinitialized pxm2node in abd_srat();
* Added BUILD_BUG_ON(MAX_NUMNODES >= NUMA_NO_NODE);
* Made changes to K&R style (which is what this file uses)
xen/arch/x86/srat.c | 96 ++++++++++++++++++++++++++++++++------------
xen/include/asm-x86/numa.h | 4 +-
2 files changed, 72 insertions(+), 28 deletions(-)
diff --git a/xen/arch/x86/srat.c b/xen/arch/x86/srat.c
index 29fc724..1664393 100644
--- a/xen/arch/x86/srat.c
+++ b/xen/arch/x86/srat.c
@@ -27,35 +27,78 @@ static nodemask_t memory_nodes_parsed __initdata;
static nodemask_t processor_nodes_parsed __initdata;
static nodemask_t nodes_found __initdata;
static struct node nodes[MAX_NUMNODES] __initdata;
-static u8 __read_mostly pxm2node[256] = { [0 ... 255] = NUMA_NO_NODE };
+struct pxm_to_node {
+ unsigned pxm;
+ u8 node;
+};
+static struct pxm_to_node __read_mostly pxm2node[MAX_NUMNODES] =
+ { [0 ... MAX_NUMNODES - 1] = {.node = NUMA_NO_NODE} };
+
+static int node_to_pxm(unsigned n);
static int num_node_memblks;
static struct node node_memblk_range[NR_NODE_MEMBLKS];
static int memblk_nodeid[NR_NODE_MEMBLKS];
+static inline bool_t node_found(unsigned idx, unsigned pxm)
+{
+ return ((pxm2node[idx].pxm == pxm) &&
+ (pxm2node[idx].node != NUMA_NO_NODE));
+}
-static int node_to_pxm(int n);
-
-int pxm_to_node(int pxm)
+int pxm_to_node(unsigned pxm)
{
- if ((unsigned)pxm >= 256)
- return -1;
+ unsigned i;
+
+ if ((pxm < MAX_NUMNODES) && node_found(pxm, pxm))
+ return pxm2node[pxm].node;
+
+ for (i = 0; i < MAX_NUMNODES; i++)
+ if (node_found(i, pxm))
+ return pxm2node[i].node;
+
/* Extend 0xff to (int)-1 */
- return (signed char)pxm2node[pxm];
+ return (signed char)NUMA_NO_NODE;
}
-__devinit int setup_node(int pxm)
+__devinit int setup_node(unsigned 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;
+ int node;
+ unsigned idx;
+ static bool_t warned;
+
+ BUILD_BUG_ON(MAX_NUMNODES >= NUMA_NO_NODE);
+
+ if (pxm < MAX_NUMNODES) {
+ if (node_found(pxm, pxm))
+ return pxm2node[pxm].node;
+
+ /* Try to maintain indexing of pxm2node by pxm */
+ if (pxm2node[pxm].node == NUMA_NO_NODE) {
+ idx = pxm;
+ goto finish;
+ }
+ }
+
+ for (idx = 0; idx < MAX_NUMNODES; idx++)
+ if (pxm2node[idx].node == NUMA_NO_NODE)
+ goto finish;
+
+ if (!warned) {
+ printk(XENLOG_WARNING "More PXMs than available nodes\n");
+ warned = 1;
}
- return pxm2node[pxm];
+
+ return (signed char)NUMA_NO_NODE;
+
+ finish:
+ node = first_unset_node(nodes_found);
+ node_set(node, nodes_found);
+ pxm2node[idx].pxm = pxm;
+ pxm2node[idx].node = node;
+
+ return node;
}
int valid_numa_range(u64 start, u64 end, int node)
@@ -111,8 +154,8 @@ static __init void bad_srat(void)
acpi_numa = -1;
for (i = 0; i < MAX_LOCAL_APIC; i++)
apicid_to_node[i] = NUMA_NO_NODE;
- for (i = 0; i < ARRAY_SIZE(pxm2node); i++)
- pxm2node[i] = NUMA_NO_NODE;
+ for (i = 0; i < MAX_NUMNODES; i++)
+ pxm2node[i].node = NUMA_NO_NODE;
mem_hotplug = 0;
}
@@ -438,15 +481,16 @@ int __init acpi_scan_nodes(u64 start, u64 end)
return 0;
}
-static int node_to_pxm(int n)
+static int node_to_pxm(unsigned n)
{
- int i;
- if (pxm2node[n] == n)
- return n;
- for (i = 0; i < 256; i++)
- if (pxm2node[i] == n)
- return i;
- return 0;
+ unsigned i;
+
+ if ((n < MAX_NUMNODES) && (pxm2node[n].node == n))
+ return pxm2node[n].pxm;
+ for (i = 0; i < MAX_NUMNODES; i++)
+ if (pxm2node[i].node == n)
+ return pxm2node[i].pxm;
+ return 0;
}
int __node_distance(int a, int b)
diff --git a/xen/include/asm-x86/numa.h b/xen/include/asm-x86/numa.h
index 5959860..e491a9e 100644
--- a/xen/include/asm-x86/numa.h
+++ b/xen/include/asm-x86/numa.h
@@ -21,7 +21,7 @@ struct node {
extern int compute_hash_shift(struct node *nodes, int numnodes,
int *nodeids);
-extern int pxm_to_node(int nid);
+extern int pxm_to_node(unsigned pxm);
#define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
#define VIRTUAL_BUG_ON(x)
@@ -33,7 +33,7 @@ extern int numa_off;
extern int srat_disabled(void);
extern void numa_set_node(int cpu, int node);
-extern int setup_node(int pxm);
+extern int setup_node(unsigned pxm);
extern void srat_detect_node(int cpu);
extern void setup_node_bootmem(int nodeid, u64 start, u64 end);
--
1.7.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v3 2/3] x86/numa: Adjust datatypes for node and pxm
2015-02-25 23:41 [PATCH v3 0/3] Updates to pxm2node mapping and nodeID sizing Boris Ostrovsky
2015-02-25 23:41 ` [PATCH v3 1/3] x86/numa: Allow arbitrary value of PXM in PXM<->node mapping Boris Ostrovsky
@ 2015-02-25 23:41 ` Boris Ostrovsky
2015-02-25 23:41 ` [PATCH v3 3/3] mm: MEMF_node should handle changes in nodeid_t size Boris Ostrovsky
2 siblings, 0 replies; 6+ messages in thread
From: Boris Ostrovsky @ 2015-02-25 23:41 UTC (permalink / raw)
To: keir, jbeulich, yang.z.zhang, kevin.tian, ian.campbell,
stefano.stabellini, tim
Cc: Andrew.Cooper3, dario.faggioli, boris.ostrovsky, xen-devel
Use u8-sized node IDs and unsigned PXMs consistently throughout
code (and introduce nodeid_t type).
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
---
Changes n v3:
* Moved node declaration in cpu_add() into its scope.
xen/arch/x86/irq.c | 4 +-
xen/arch/x86/numa.c | 15 ++++++------
xen/arch/x86/setup.c | 2 +-
xen/arch/x86/smpboot.c | 6 +++-
xen/arch/x86/srat.c | 41 ++++++++++++++++++----------------
xen/arch/x86/x86_64/mm.c | 5 ++-
xen/common/page_alloc.c | 5 ++-
xen/drivers/passthrough/vtd/iommu.c | 5 ++-
xen/include/asm-arm/numa.h | 4 ++-
xen/include/asm-x86/irq.h | 3 +-
xen/include/asm-x86/numa.h | 24 +++++++++++---------
11 files changed, 64 insertions(+), 50 deletions(-)
diff --git a/xen/arch/x86/irq.c b/xen/arch/x86/irq.c
index f214072..9be8840 100644
--- a/xen/arch/x86/irq.c
+++ b/xen/arch/x86/irq.c
@@ -153,7 +153,7 @@ int __init bind_irq_vector(int irq, int vector, const cpumask_t *cpu_mask)
/*
* Dynamic irq allocate and deallocation for MSI
*/
-int create_irq(int node)
+int create_irq(nodeid_t node)
{
int irq, ret;
struct irq_desc *desc;
@@ -173,7 +173,7 @@ int create_irq(int node)
{
cpumask_t *mask = NULL;
- if (node != NUMA_NO_NODE && node >= 0)
+ if ( node != NUMA_NO_NODE )
{
mask = &node_to_cpumask(node);
if (cpumask_empty(mask))
diff --git a/xen/arch/x86/numa.c b/xen/arch/x86/numa.c
index 628a40a..7a01923 100644
--- a/xen/arch/x86/numa.c
+++ b/xen/arch/x86/numa.c
@@ -35,13 +35,13 @@ static typeof(*memnodemap) _memnodemap[64];
unsigned long memnodemapsize;
u8 *memnodemap;
-unsigned char cpu_to_node[NR_CPUS] __read_mostly = {
+nodeid_t cpu_to_node[NR_CPUS] __read_mostly = {
[0 ... NR_CPUS-1] = NUMA_NO_NODE
};
/*
* Keep BIOS's CPU2node information, should not be used for memory allocaion
*/
-unsigned char apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = {
+nodeid_t apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
};
cpumask_t node_to_cpumask[MAX_NUMNODES] __read_mostly;
@@ -65,7 +65,7 @@ int srat_disabled(void)
* -1 if node overlap or lost ram (shift too big)
*/
static int __init populate_memnodemap(const struct node *nodes,
- int numnodes, int shift, int *nodeids)
+ int numnodes, int shift, nodeid_t *nodeids)
{
unsigned long spdx, epdx;
int i, res = -1;
@@ -150,7 +150,7 @@ static int __init extract_lsb_from_nodes(const struct node *nodes,
}
int __init compute_hash_shift(struct node *nodes, int numnodes,
- int *nodeids)
+ nodeid_t *nodeids)
{
int shift;
@@ -172,7 +172,7 @@ int __init compute_hash_shift(struct node *nodes, int numnodes,
return shift;
}
/* initialize NODE_DATA given nodeid and start/end */
-void __init setup_node_bootmem(int nodeid, u64 start, u64 end)
+void __init setup_node_bootmem(nodeid_t nodeid, u64 start, u64 end)
{
unsigned long start_pfn, end_pfn;
@@ -294,7 +294,7 @@ __cpuinit void numa_add_cpu(int cpu)
cpumask_set_cpu(cpu, &node_to_cpumask[cpu_to_node(cpu)]);
}
-void __cpuinit numa_set_node(int cpu, int node)
+void __cpuinit numa_set_node(int cpu, nodeid_t node)
{
cpu_to_node[cpu] = node;
}
@@ -340,7 +340,8 @@ static __init int numa_setup(char *opt)
*/
void __init init_cpu_to_node(void)
{
- int i, node;
+ unsigned i;
+ nodeid_t node;
for ( i = 0; i < nr_cpu_ids; i++ )
{
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index c27c49c..84da722 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -188,7 +188,7 @@ static void __init init_idle_domain(void)
void __devinit srat_detect_node(int cpu)
{
- unsigned node;
+ nodeid_t node;
u32 apicid = x86_cpu_to_apicid[cpu];
node = apicid_to_node[apicid];
diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index c54be7e..ea84fe0 100644
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -843,7 +843,7 @@ void __cpu_die(unsigned int cpu)
int cpu_add(uint32_t apic_id, uint32_t acpi_id, uint32_t pxm)
{
- int node, cpu = -1;
+ int cpu = -1;
dprintk(XENLOG_DEBUG, "cpu_add apic_id %x acpi_id %x pxm %x\n",
apic_id, acpi_id, pxm);
@@ -877,7 +877,9 @@ int cpu_add(uint32_t apic_id, uint32_t acpi_id, uint32_t pxm)
if ( !srat_disabled() )
{
- if ( (node = setup_node(pxm)) < 0 )
+ nodeid_t node = setup_node(pxm);
+
+ if ( node == NUMA_NO_NODE )
{
dprintk(XENLOG_WARNING,
"Setup node failed for pxm %x\n", pxm);
diff --git a/xen/arch/x86/srat.c b/xen/arch/x86/srat.c
index 1664393..5a237a3 100644
--- a/xen/arch/x86/srat.c
+++ b/xen/arch/x86/srat.c
@@ -30,16 +30,16 @@ static struct node nodes[MAX_NUMNODES] __initdata;
struct pxm_to_node {
unsigned pxm;
- u8 node;
+ nodeid_t node;
};
static struct pxm_to_node __read_mostly pxm2node[MAX_NUMNODES] =
{ [0 ... MAX_NUMNODES - 1] = {.node = NUMA_NO_NODE} };
-static int node_to_pxm(unsigned n);
+static unsigned node_to_pxm(nodeid_t n);
static int num_node_memblks;
static struct node node_memblk_range[NR_NODE_MEMBLKS];
-static int memblk_nodeid[NR_NODE_MEMBLKS];
+static nodeid_t memblk_nodeid[NR_NODE_MEMBLKS];
static inline bool_t node_found(unsigned idx, unsigned pxm)
{
@@ -47,7 +47,7 @@ static inline bool_t node_found(unsigned idx, unsigned pxm)
(pxm2node[idx].node != NUMA_NO_NODE));
}
-int pxm_to_node(unsigned pxm)
+nodeid_t pxm_to_node(unsigned pxm)
{
unsigned i;
@@ -58,13 +58,12 @@ int pxm_to_node(unsigned pxm)
if (node_found(i, pxm))
return pxm2node[i].node;
- /* Extend 0xff to (int)-1 */
- return (signed char)NUMA_NO_NODE;
+ return NUMA_NO_NODE;
}
-__devinit int setup_node(unsigned pxm)
+__devinit nodeid_t setup_node(unsigned pxm)
{
- int node;
+ nodeid_t node;
unsigned idx;
static bool_t warned;
@@ -90,7 +89,7 @@ __devinit int setup_node(unsigned pxm)
warned = 1;
}
- return (signed char)NUMA_NO_NODE;
+ return NUMA_NO_NODE;
finish:
node = first_unset_node(nodes_found);
@@ -101,7 +100,7 @@ __devinit int setup_node(unsigned pxm)
return node;
}
-int valid_numa_range(u64 start, u64 end, int node)
+int valid_numa_range(u64 start, u64 end, nodeid_t node)
{
int i;
@@ -205,8 +204,9 @@ void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
void __init
acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
{
- int pxm, node;
- int apic_id;
+ unsigned pxm;
+ nodeid_t node;
+ u32 apic_id;
if (srat_disabled())
return;
@@ -218,7 +218,7 @@ acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
return;
pxm = pa->proximity_domain;
node = setup_node(pxm);
- if (node < 0) {
+ if (node == NUMA_NO_NODE) {
printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
bad_srat();
return;
@@ -235,7 +235,9 @@ acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
void __init
acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
{
- int pxm, node;
+ unsigned pxm;
+ nodeid_t node;
+
if (srat_disabled())
return;
if (pa->header.length != sizeof(struct acpi_srat_cpu_affinity)) {
@@ -251,7 +253,7 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
pxm |= pa->proximity_domain_hi[2] << 24;
}
node = setup_node(pxm);
- if (node < 0) {
+ if (node == NUMA_NO_NODE) {
printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
bad_srat();
return;
@@ -269,7 +271,8 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
{
struct node *nd;
u64 start, end;
- int node, pxm;
+ unsigned pxm;
+ nodeid_t node;
int i;
if (srat_disabled())
@@ -295,7 +298,7 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
if (srat_rev < 2)
pxm &= 0xff;
node = setup_node(pxm);
- if (node < 0) {
+ if (node == NUMA_NO_NODE) {
printk(KERN_ERR "SRAT: Too many proximity domains.\n");
bad_srat();
return;
@@ -481,7 +484,7 @@ int __init acpi_scan_nodes(u64 start, u64 end)
return 0;
}
-static int node_to_pxm(unsigned n)
+static unsigned node_to_pxm(nodeid_t n)
{
unsigned i;
@@ -493,7 +496,7 @@ static int node_to_pxm(unsigned n)
return 0;
}
-int __node_distance(int a, int b)
+int __node_distance(nodeid_t a, nodeid_t b)
{
int index;
diff --git a/xen/arch/x86/x86_64/mm.c b/xen/arch/x86/x86_64/mm.c
index d631aee..6875c92 100644
--- a/xen/arch/x86/x86_64/mm.c
+++ b/xen/arch/x86/x86_64/mm.c
@@ -1343,7 +1343,8 @@ int mem_hotadd_check(unsigned long spfn, unsigned long epfn)
int memory_add(unsigned long spfn, unsigned long epfn, unsigned int pxm)
{
struct mem_hotadd_info info;
- int ret, node;
+ int ret;
+ nodeid_t node;
unsigned long old_max = max_page, old_total = total_pages;
unsigned long old_node_start, old_node_span, orig_online;
unsigned long i;
@@ -1353,7 +1354,7 @@ int memory_add(unsigned long spfn, unsigned long epfn, unsigned int pxm)
if ( !mem_hotadd_check(spfn, epfn) )
return -EINVAL;
- if ( (node = setup_node(pxm)) == -1 )
+ if ( (node = setup_node(pxm)) == NUMA_NO_NODE )
return -EINVAL;
if ( !valid_numa_range(spfn << PAGE_SHIFT, epfn << PAGE_SHIFT, node) )
diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index 7b4092d..124fa88 100644
--- a/xen/common/page_alloc.c
+++ b/xen/common/page_alloc.c
@@ -581,7 +581,7 @@ static struct page_info *alloc_heap_pages(
struct domain *d)
{
unsigned int first_node, i, j, zone = 0, nodemask_retry = 0;
- unsigned int node = (uint8_t)((memflags >> _MEMF_node) - 1);
+ nodeid_t node = (nodeid_t)((memflags >> _MEMF_node) - 1);
unsigned long request = 1UL << order;
struct page_info *pg;
nodemask_t nodemask = (d != NULL ) ? d->node_affinity : node_online_map;
@@ -1278,7 +1278,8 @@ static void __init smp_scrub_heap_pages(void *data)
unsigned long mfn, start, end;
struct page_info *pg;
struct scrub_region *r;
- unsigned int temp_cpu, node, cpu_idx = 0;
+ unsigned int temp_cpu, cpu_idx = 0;
+ nodeid_t node;
unsigned int cpu = smp_processor_id();
if ( data )
diff --git a/xen/drivers/passthrough/vtd/iommu.c b/xen/drivers/passthrough/vtd/iommu.c
index 19d8165..2e0af6f 100644
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -190,14 +190,15 @@ u64 alloc_pgtable_maddr(struct acpi_drhd_unit *drhd, unsigned long npages)
struct acpi_rhsa_unit *rhsa;
struct page_info *pg, *cur_pg;
u64 *vaddr;
- int node = -1, i;
+ nodeid_t node = NUMA_NO_NODE;
+ unsigned i;
rhsa = drhd_to_rhsa(drhd);
if ( rhsa )
node = pxm_to_node(rhsa->proximity_domain);
pg = alloc_domheap_pages(NULL, get_order_from_pages(npages),
- (node == -1 ) ? 0 : MEMF_node(node));
+ (node == NUMA_NO_NODE) ? 0 : MEMF_node(node));
if ( !pg )
return 0;
diff --git a/xen/include/asm-arm/numa.h b/xen/include/asm-arm/numa.h
index 06a9d5a..a00cb7c 100644
--- a/xen/include/asm-arm/numa.h
+++ b/xen/include/asm-arm/numa.h
@@ -1,11 +1,13 @@
#ifndef __ARCH_ARM_NUMA_H
#define __ARCH_ARM_NUMA_H
+typedef u8 nodeid_t;
+
/* Fake one node for now. See also node_online_map. */
#define cpu_to_node(cpu) 0
#define node_to_cpumask(node) (cpu_online_map)
-static inline __attribute__((pure)) int phys_to_nid(paddr_t addr)
+static inline __attribute__((pure)) nodeid_t phys_to_nid(paddr_t addr)
{
return 0;
}
diff --git a/xen/include/asm-x86/irq.h b/xen/include/asm-x86/irq.h
index d3c55f3..a44305e 100644
--- a/xen/include/asm-x86/irq.h
+++ b/xen/include/asm-x86/irq.h
@@ -5,6 +5,7 @@
#include <xen/config.h>
#include <asm/atomic.h>
+#include <asm/numa.h>
#include <xen/cpumask.h>
#include <xen/smp.h>
#include <xen/hvm/irq.h>
@@ -155,7 +156,7 @@ int init_irq_data(void);
void clear_irq_vector(int irq);
int irq_to_vector(int irq);
-int create_irq(int node);
+int create_irq(nodeid_t node);
void destroy_irq(unsigned int irq);
int assign_irq_vector(int irq, const cpumask_t *);
diff --git a/xen/include/asm-x86/numa.h b/xen/include/asm-x86/numa.h
index e491a9e..419f770 100644
--- a/xen/include/asm-x86/numa.h
+++ b/xen/include/asm-x86/numa.h
@@ -5,6 +5,8 @@
#define NODES_SHIFT 6
+typedef u8 nodeid_t;
+
extern int srat_rev;
extern unsigned char cpu_to_node[];
@@ -20,8 +22,8 @@ struct node {
};
extern int compute_hash_shift(struct node *nodes, int numnodes,
- int *nodeids);
-extern int pxm_to_node(unsigned pxm);
+ nodeid_t *nodeids);
+extern nodeid_t pxm_to_node(unsigned pxm);
#define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
#define VIRTUAL_BUG_ON(x)
@@ -32,12 +34,12 @@ extern int numa_off;
extern int srat_disabled(void);
-extern void numa_set_node(int cpu, int node);
-extern int setup_node(unsigned pxm);
+extern void numa_set_node(int cpu, nodeid_t node);
+extern nodeid_t setup_node(unsigned pxm);
extern void srat_detect_node(int cpu);
-extern void setup_node_bootmem(int nodeid, u64 start, u64 end);
-extern unsigned char apicid_to_node[];
+extern void setup_node_bootmem(nodeid_t nodeid, u64 start, u64 end);
+extern nodeid_t apicid_to_node[];
#ifdef CONFIG_NUMA
extern void init_cpu_to_node(void);
@@ -54,14 +56,14 @@ extern u8 *memnodemap;
struct node_data {
unsigned long node_start_pfn;
unsigned long node_spanned_pages;
- unsigned int node_id;
+ nodeid_t node_id;
};
extern struct node_data node_data[];
-static inline __attribute__((pure)) int phys_to_nid(paddr_t addr)
+static inline __attribute__((pure)) nodeid_t phys_to_nid(paddr_t addr)
{
- unsigned nid;
+ nodeid_t nid;
VIRTUAL_BUG_ON((paddr_to_pdx(addr) >> memnode_shift) >= memnodemapsize);
nid = memnodemap[paddr_to_pdx(addr) >> memnode_shift];
VIRTUAL_BUG_ON(nid >= MAX_NUMNODES || !node_data[nid]);
@@ -75,7 +77,7 @@ static inline __attribute__((pure)) int phys_to_nid(paddr_t addr)
#define node_end_pfn(nid) (NODE_DATA(nid)->node_start_pfn + \
NODE_DATA(nid)->node_spanned_pages)
-extern int valid_numa_range(u64 start, u64 end, int node);
+extern int valid_numa_range(u64 start, u64 end, nodeid_t node);
#else
#define init_cpu_to_node() do {} while (0)
#define clear_node_cpumask(cpu) do {} while (0)
@@ -83,6 +85,6 @@ extern int valid_numa_range(u64 start, u64 end, int node);
#endif
void srat_parse_regions(u64 addr);
-extern int __node_distance(int a, int b);
+extern int __node_distance(nodeid_t a, nodeid_t b);
#endif
--
1.7.1
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