redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

x86-64, NUMA: Move apicid to numa mapping initialization from amd_scan_nodes() to amd_numa_init()

Browse source 
This brings amd initialization behavior closer to that of acpi.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Shaohui Zheng <shaohui.zheng@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Tejun Heo 2011-02-16 12:13:07 +01:00
parent 99df738cd2
commit 45fe6c78c4
1 changed files with 23 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

43
arch/x86/mm/amdtopology_64.c
View file

@ -74,8 +74,9 @@ int __init amd_numa_init(void)
unsigned long end = PFN_PHYS(max_pfn);
unsigned numnodes;
unsigned long prevbase;
int i, nb;
int i, j, nb;
u32 nodeid, reg;
unsigned int bits, cores, apicid_base;
if (!early_pci_allowed())
return -EINVAL;
@ -176,6 +177,26 @@ int __init amd_numa_init(void)
if (!nodes_weight(mem_nodes_parsed))
return -ENOENT;
/*
* We seem to have valid NUMA configuration. Map apicids to nodes
* using the coreid bits from early_identify_cpu.
*/
bits = boot_cpu_data.x86_coreid_bits;
cores = 1 << bits;
apicid_base = 0;
/* get the APIC ID of the BSP early for systems with apicid lifting */
early_get_boot_cpu_id();
if (boot_cpu_physical_apicid > 0) {
pr_info("BSP APIC ID: %02x\n", boot_cpu_physical_apicid);
apicid_base = boot_cpu_physical_apicid;
}
for_each_node_mask(i, cpu_nodes_parsed)
for (j = apicid_base; j < cores + apicid_base; j++)
set_apicid_to_node((i << bits) + j, i);
return 0;
}
@ -251,9 +272,6 @@ void __init amd_fake_nodes(const struct bootnode *nodes, int nr_nodes)
int __init amd_scan_nodes(void)
{
unsigned int bits;
unsigned int cores;
unsigned int apicid_base;
int i;
memnode_shift = compute_hash_shift(nodes, 8, NULL);
@ -264,28 +282,13 @@ int __init amd_scan_nodes(void)
pr_info("Using node hash shift of %d\n", memnode_shift);
/* use the coreid bits from early_identify_cpu */
bits = boot_cpu_data.x86_coreid_bits;
cores = (1<<bits);
apicid_base = 0;
/* get the APIC ID of the BSP early for systems with apicid lifting */
early_get_boot_cpu_id();
if (boot_cpu_physical_apicid > 0) {
pr_info("BSP APIC ID: %02x\n", boot_cpu_physical_apicid);
apicid_base = boot_cpu_physical_apicid;
}
for_each_node_mask(i, node_possible_map)
memblock_x86_register_active_regions(i,
nodes[i].start >> PAGE_SHIFT,
nodes[i].end >> PAGE_SHIFT);
init_memory_mapping_high();
for_each_node_mask(i, node_possible_map) {
int j;
for (j = apicid_base; j < cores + apicid_base; j++)
set_apicid_to_node((i << bits) + j, i);
for_each_node_mask(i, node_possible_map)
setup_node_bootmem(i, nodes[i].start, nodes[i].end);
}
numa_init_array();
return 0;