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numa,pc-dimm: Store pc-dimm memory information in numa_info 

Start storing the (start_addr, end_addr) of the pc-dimm memory
in corresponding numa_info[node] so that this information can be used
to lookup node by address.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Bharata B Rao 2015-06-29 13:50:25 +05:30 committed by Eduardo Habkost
parent 8e23184b6b
commit fa9ea81d15
3 changed files with 40 additions and 0 deletions
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4
hw/mem/pc-dimm.c
View File

@ -97,6 +97,7 @@ void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms,
memory_region_add_subregion(&hpms->mr, addr - hpms->base, mr);
vmstate_register_ram(mr, dev);
numa_set_mem_node_id(addr, memory_region_size(mr), dimm->node);
out:
error_propagate(errp, local_err);
@ -105,6 +106,9 @@ out:
void pc_dimm_memory_unplug(DeviceState *dev, MemoryHotplugState *hpms,
MemoryRegion *mr)
{
PCDIMMDevice *dimm = PC_DIMM(dev);
numa_unset_mem_node_id(dimm->addr, memory_region_size(mr), dimm->node);
memory_region_del_subregion(&hpms->mr, mr);
vmstate_unregister_ram(mr, dev);
}

10
include/sysemu/numa.h
View File

@ -10,16 +10,26 @@
extern int nb_numa_nodes; /* Number of NUMA nodes */
struct numa_addr_range {
ram_addr_t mem_start;
ram_addr_t mem_end;
QLIST_ENTRY(numa_addr_range) entry;
};
typedef struct node_info {
uint64_t node_mem;
DECLARE_BITMAP(node_cpu, MAX_CPUMASK_BITS);
struct HostMemoryBackend *node_memdev;
bool present;
QLIST_HEAD(, numa_addr_range) addr; /* List to store address ranges */
} NodeInfo;
extern NodeInfo numa_info[MAX_NODES];
void parse_numa_opts(MachineClass *mc);
void numa_post_machine_init(void);
void query_numa_node_mem(uint64_t node_mem[]);
extern QemuOptsList qemu_numa_opts;
void numa_set_mem_node_id(ram_addr_t addr, uint64_t size, uint32_t node);
void numa_unset_mem_node_id(ram_addr_t addr, uint64_t size, uint32_t node);
#endif

26
numa.c
View File

@ -52,6 +52,28 @@ static int max_numa_nodeid; /* Highest specified NUMA node ID, plus one.
int nb_numa_nodes;
NodeInfo numa_info[MAX_NODES];
void numa_set_mem_node_id(ram_addr_t addr, uint64_t size, uint32_t node)
{
struct numa_addr_range *range = g_malloc0(sizeof(*range));
range->mem_start = addr;
range->mem_end = addr + size - 1;
QLIST_INSERT_HEAD(&numa_info[node].addr, range, entry);
}
void numa_unset_mem_node_id(ram_addr_t addr, uint64_t size, uint32_t node)
{
struct numa_addr_range *range, *next;
QLIST_FOREACH_SAFE(range, &numa_info[node].addr, entry, next) {
if (addr == range->mem_start && (addr + size - 1) == range->mem_end) {
QLIST_REMOVE(range, entry);
g_free(range);
return;
}
}
}
static void numa_node_parse(NumaNodeOptions *node, QemuOpts *opts, Error **errp)
{
uint16_t nodenr;
@ -273,6 +295,10 @@ void parse_numa_opts(MachineClass *mc)
exit(1);
}
for (i = 0; i < nb_numa_nodes; i++) {
QLIST_INIT(&numa_info[i].addr);
}
for (i = 0; i < nb_numa_nodes; i++) {
if (!bitmap_empty(numa_info[i].node_cpu, MAX_CPUMASK_BITS)) {
break;