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powerpc/cpumask: Convert NUMA code to new cpumask API

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Convert NUMA code to new cpumask API. We shift the node to cpumask
setup code until after we complete bootmem allocation so we can
dynamically allocate the cpumasks.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard 2010-04-26 15:32:43 +00:00 committed by Benjamin Herrenschmidt
parent 8729faaa5e
commit 25863de07a
3 changed files with 47 additions and 15 deletions
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2
arch/powerpc/include/asm/mmzone.h
View file

@ -30,7 +30,7 @@ extern struct pglist_data *node_data[];
*/
extern int numa_cpu_lookup_table[];
extern cpumask_t numa_cpumask_lookup_table[];
extern cpumask_var_t node_to_cpumask_map[];
#ifdef CONFIG_MEMORY_HOTPLUG
extern unsigned long max_pfn;
#endif

2
arch/powerpc/include/asm/topology.h
View file

@ -29,7 +29,7 @@ static inline int cpu_to_node(int cpu)
#define cpumask_of_node(node) ((node) == -1 ? \
cpu_all_mask : \
&numa_cpumask_lookup_table[node])
node_to_cpumask_map[node])
int of_node_to_nid(struct device_node *device);

58
arch/powerpc/mm/numa.c
View file

@ -33,16 +33,41 @@ static int numa_debug;
#define dbg(args...) if (numa_debug) { printk(KERN_INFO args); }
int numa_cpu_lookup_table[NR_CPUS];
cpumask_t numa_cpumask_lookup_table[MAX_NUMNODES];
cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
struct pglist_data *node_data[MAX_NUMNODES];
EXPORT_SYMBOL(numa_cpu_lookup_table);
EXPORT_SYMBOL(numa_cpumask_lookup_table);
EXPORT_SYMBOL(node_to_cpumask_map);
EXPORT_SYMBOL(node_data);
static int min_common_depth;
static int n_mem_addr_cells, n_mem_size_cells;
/*
* Allocate node_to_cpumask_map based on number of available nodes
* Requires node_possible_map to be valid.
*
* Note: node_to_cpumask() is not valid until after this is done.
*/
static void __init setup_node_to_cpumask_map(void)
{
unsigned int node, num = 0;
/* setup nr_node_ids if not done yet */
if (nr_node_ids == MAX_NUMNODES) {
for_each_node_mask(node, node_possible_map)
num = node;
nr_node_ids = num + 1;
}
/* allocate the map */
for (node = 0; node < nr_node_ids; node++)
alloc_bootmem_cpumask_var(&node_to_cpumask_map[node]);
/* cpumask_of_node() will now work */
dbg("Node to cpumask map for %d nodes\n", nr_node_ids);
}
static int __cpuinit fake_numa_create_new_node(unsigned long end_pfn,
unsigned int *nid)
{
@ -138,8 +163,8 @@ static void __cpuinit map_cpu_to_node(int cpu, int node)
dbg("adding cpu %d to node %d\n", cpu, node);
if (!(cpu_isset(cpu, numa_cpumask_lookup_table[node])))
cpu_set(cpu, numa_cpumask_lookup_table[node]);
if (!(cpumask_test_cpu(cpu, node_to_cpumask_map[node])))
cpumask_set_cpu(cpu, node_to_cpumask_map[node]);
}
#ifdef CONFIG_HOTPLUG_CPU
@ -149,8 +174,8 @@ static void unmap_cpu_from_node(unsigned long cpu)
dbg("removing cpu %lu from node %d\n", cpu, node);
if (cpu_isset(cpu, numa_cpumask_lookup_table[node])) {
cpu_clear(cpu, numa_cpumask_lookup_table[node]);
if (cpumask_test_cpu(cpu, node_to_cpumask_map[node])) {
cpumask_set_cpu(cpu, node_to_cpumask_map[node]);
} else {
printk(KERN_ERR "WARNING: cpu %lu not found in node %d\n",
cpu, node);
@ -737,8 +762,9 @@ void __init dump_numa_cpu_topology(void)
* If we used a CPU iterator here we would miss printing
* the holes in the cpumap.
*/
for (cpu = 0; cpu < NR_CPUS; cpu++) {
if (cpu_isset(cpu, numa_cpumask_lookup_table[node])) {
for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
if (cpumask_test_cpu(cpu,
node_to_cpumask_map[node])) {
if (count == 0)
printk(" %u", cpu);
++count;
@ -750,7 +776,7 @@ void __init dump_numa_cpu_topology(void)
}
if (count > 1)
printk("-%u", NR_CPUS - 1);
printk("-%u", nr_cpu_ids - 1);
printk("\n");
}
}
@ -926,10 +952,6 @@ void __init do_init_bootmem(void)
else
dump_numa_memory_topology();
register_cpu_notifier(&ppc64_numa_nb);
cpu_numa_callback(&ppc64_numa_nb, CPU_UP_PREPARE,
(void *)(unsigned long)boot_cpuid);
for_each_online_node(nid) {
unsigned long start_pfn, end_pfn;
void *bootmem_vaddr;
@ -983,6 +1005,16 @@ void __init do_init_bootmem(void)
}
init_bootmem_done = 1;
/*
* Now bootmem is initialised we can create the node to cpumask
* lookup tables and setup the cpu callback to populate them.
*/
setup_node_to_cpumask_map();
register_cpu_notifier(&ppc64_numa_nb);
cpu_numa_callback(&ppc64_numa_nb, CPU_UP_PREPARE,
(void *)(unsigned long)boot_cpuid);
}
void __init paging_init(void)