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[Qemu-devel] [PATCH v4 4/6] numa, pc-dimm: Store pc-dimm memory informat
From: |
Bharata B Rao |
Subject: |
[Qemu-devel] [PATCH v4 4/6] numa, pc-dimm: Store pc-dimm memory information in numa_info |
Date: |
Mon, 29 Jun 2015 13:50:25 +0530 |
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 <address@hidden>
---
hw/mem/pc-dimm.c | 4 ++++
include/sysemu/numa.h | 10 ++++++++++
numa.c | 26 ++++++++++++++++++++++++++
3 files changed, 40 insertions(+)
diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c
index 98971b7..bb04862 100644
--- a/hw/mem/pc-dimm.c
+++ b/hw/mem/pc-dimm.c
@@ -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);
}
diff --git a/include/sysemu/numa.h b/include/sysemu/numa.h
index 6523b4d..7176364 100644
--- a/include/sysemu/numa.h
+++ b/include/sysemu/numa.h
@@ -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
diff --git a/numa.c b/numa.c
index 91fc6c1..116d1fb 100644
--- a/numa.c
+++ b/numa.c
@@ -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;
@@ -274,6 +296,10 @@ void parse_numa_opts(MachineClass *mc)
}
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;
}
--
2.1.0
- [Qemu-devel] [PATCH v4 0/6] Refactoring pc_dimm_plug and NUMA node lookup API, Bharata B Rao, 2015/06/29
- [Qemu-devel] [PATCH v4 2/6] pc, pc-dimm: Factor out reusable parts in pc_dimm_plug to a separate routine, Bharata B Rao, 2015/06/29
- [Qemu-devel] [PATCH v4 1/6] pc, pc-dimm: Extract hotplug related fields in PCMachineState to a structure, Bharata B Rao, 2015/06/29
- [Qemu-devel] [PATCH v4 3/6] pc: Abort if HotplugHandlerClass::plug() fails, Bharata B Rao, 2015/06/29
- [Qemu-devel] [PATCH v4 4/6] numa, pc-dimm: Store pc-dimm memory information in numa_info,
Bharata B Rao <=
- Re: [Qemu-devel] [PATCH v4 4/6] numa, pc-dimm: Store pc-dimm memory information in numa_info, David Gibson, 2015/06/29
- [Qemu-devel] [PATCH v4 6/6] numa: API to lookup NUMA node by address, Bharata B Rao, 2015/06/29
- [Qemu-devel] [PATCH v4 5/6] numa: Store boot memory address range in node_info, Bharata B Rao, 2015/06/29
- Re: [Qemu-devel] [PATCH v4 0/6] Refactoring pc_dimm_plug and NUMA node lookup API, Igor Mammedov, 2015/06/29