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x86-64, NUMA: Unify the rest of memblk registration 

Move the remaining memblk registration logic from acpi_scan_nodes() to
numa_register_memblks() and initmem_init().

This applies nodes_cover_memory() sanity check, memory node sorting
and node_online() checking, which were only applied to acpi, to all
init methods.

As all memblk registration is moved to common code, active range
clearing is moved to initmem_init() too and removed from bad_srat().

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 17:11:08 +01:00
parent 43a662f04f
commit fd0435d8fb
3 changed files with 68 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/x86/mm/amdtopology_64.c
View File

@ -262,12 +262,5 @@ void __init amd_fake_nodes(const struct bootnode *nodes, int nr_nodes)
int __init amd_scan_nodes(void)
{
int i;
init_memory_mapping_high();
for_each_node_mask(i, node_possible_map)
setup_node_bootmem(i, numa_nodes[i].start, numa_nodes[i].end);
numa_init_array();
return 0;
}

74
arch/x86/mm/numa_64.c
View File

@ -287,6 +287,37 @@ setup_node_bootmem(int nodeid, unsigned long start, unsigned long end)
node_set_online(nodeid);
}
/*
* Sanity check to catch more bad NUMA configurations (they are amazingly
* common). Make sure the nodes cover all memory.
*/
static int __init nodes_cover_memory(const struct bootnode *nodes)
{
unsigned long numaram, e820ram;
int i;
numaram = 0;
for_each_node_mask(i, mem_nodes_parsed) {
unsigned long s = nodes[i].start >> PAGE_SHIFT;
unsigned long e = nodes[i].end >> PAGE_SHIFT;
numaram += e - s;
numaram -= __absent_pages_in_range(i, s, e);
if ((long)numaram < 0)
numaram = 0;
}
e820ram = max_pfn -
(memblock_x86_hole_size(0, max_pfn<<PAGE_SHIFT) >> PAGE_SHIFT);
/* We seem to lose 3 pages somewhere. Allow 1M of slack. */
if ((long)(e820ram - numaram) >= (1<<(20 - PAGE_SHIFT))) {
printk(KERN_ERR "NUMA: nodes only cover %luMB of your %luMB e820 RAM. Not used.\n",
(numaram << PAGE_SHIFT) >> 20,
(e820ram << PAGE_SHIFT) >> 20);
return 0;
}
return 1;
}
static int __init numa_register_memblks(void)
{
int i;
@ -349,6 +380,27 @@ static int __init numa_register_memblks(void)
memblock_x86_register_active_regions(memblk_nodeid[i],
node_memblk_range[i].start >> PAGE_SHIFT,
node_memblk_range[i].end >> PAGE_SHIFT);
/* for out of order entries */
sort_node_map();
if (!nodes_cover_memory(numa_nodes))
return -EINVAL;
init_memory_mapping_high();
/* Finally register nodes. */
for_each_node_mask(i, node_possible_map)
setup_node_bootmem(i, numa_nodes[i].start, numa_nodes[i].end);
/*
* Try again in case setup_node_bootmem missed one due to missing
* bootmem.
*/
for_each_node_mask(i, node_possible_map)
if (!node_online(i))
setup_node_bootmem(i, numa_nodes[i].start,
numa_nodes[i].end);
return 0;
}
@ -714,16 +766,14 @@ static int dummy_numa_init(void)
node_set(0, cpu_nodes_parsed);
node_set(0, mem_nodes_parsed);
numa_add_memblk(0, 0, (u64)max_pfn << PAGE_SHIFT);
numa_nodes[0].start = 0;
numa_nodes[0].end = (u64)max_pfn << PAGE_SHIFT;
return 0;
}
static int dummy_scan_nodes(void)
{
init_memory_mapping_high();
setup_node_bootmem(0, 0, max_pfn << PAGE_SHIFT);
numa_init_array();
return 0;
}
@ -759,6 +809,7 @@ void __init initmem_init(void)
memset(node_memblk_range, 0, sizeof(node_memblk_range));
memset(memblk_nodeid, 0, sizeof(memblk_nodeid));
memset(numa_nodes, 0, sizeof(numa_nodes));
remove_all_active_ranges();
if (numa_init[i]() < 0)
continue;
@ -783,8 +834,19 @@ void __init initmem_init(void)
if (numa_register_memblks() < 0)
continue;
if (!scan_nodes[i]())
return;
if (scan_nodes[i]() < 0)
continue;
for (j = 0; j < nr_cpu_ids; j++) {
int nid = early_cpu_to_node(j);
if (nid == NUMA_NO_NODE)
continue;
if (!node_online(nid))
numa_clear_node(j);
}
numa_init_array();
return;
}
BUG();
}

61
arch/x86/mm/srat_64.c
View File

@ -44,7 +44,6 @@ static __init void bad_srat(void)
numa_nodes[i].start = numa_nodes[i].end = 0;
nodes_add[i].start = nodes_add[i].end = 0;
}
remove_all_active_ranges();
}
static __init inline int srat_disabled(void)
@ -259,35 +258,6 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
update_nodes_add(node, start, end);
}
/* Sanity check to catch more bad SRATs (they are amazingly common).
Make sure the PXMs cover all memory. */
static int __init nodes_cover_memory(const struct bootnode *nodes)
{
int i;
unsigned long pxmram, e820ram;
pxmram = 0;
for_each_node_mask(i, mem_nodes_parsed) {
unsigned long s = nodes[i].start >> PAGE_SHIFT;
unsigned long e = nodes[i].end >> PAGE_SHIFT;
pxmram += e - s;
pxmram -= __absent_pages_in_range(i, s, e);
if ((long)pxmram < 0)
pxmram = 0;
}
e820ram = max_pfn - (memblock_x86_hole_size(0, max_pfn<<PAGE_SHIFT)>>PAGE_SHIFT);
/* We seem to lose 3 pages somewhere. Allow 1M of slack. */
if ((long)(e820ram - pxmram) >= (1<<(20 - PAGE_SHIFT))) {
printk(KERN_ERR
"SRAT: PXMs only cover %luMB of your %luMB e820 RAM. Not used.\n",
(pxmram << PAGE_SHIFT) >> 20,
(e820ram << PAGE_SHIFT) >> 20);
return 0;
}
return 1;
}
void __init acpi_numa_arch_fixup(void) {}
int __init x86_acpi_numa_init(void)
@ -303,39 +273,8 @@ int __init x86_acpi_numa_init(void)
/* Use the information discovered above to actually set up the nodes. */
int __init acpi_scan_nodes(void)
{
int i;
if (acpi_numa <= 0)
return -1;
/* for out of order entries in SRAT */
sort_node_map();
if (!nodes_cover_memory(numa_nodes)) {
bad_srat();
return -1;
}
init_memory_mapping_high();
/* Finally register nodes */
for_each_node_mask(i, node_possible_map)
setup_node_bootmem(i, numa_nodes[i].start, numa_nodes[i].end);
/* Try again in case setup_node_bootmem missed one due
to missing bootmem */
for_each_node_mask(i, node_possible_map)
if (!node_online(i))
setup_node_bootmem(i, numa_nodes[i].start,
numa_nodes[i].end);
for (i = 0; i < nr_cpu_ids; i++) {
int node = early_cpu_to_node(i);
if (node == NUMA_NO_NODE)
continue;
if (!node_online(node))
numa_clear_node(i);
}
numa_init_array();
return 0;
}