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x86-64, NUMA: Add common find_node_by_addr()

Browse source 
srat_64.c and amdtopology_64.c had their own versions of
find_node_by_addr() which were basically the same.  Add common one in
numa_64.c and remove the duplicates.

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 17:11:09 +01:00
parent 56e827fbde
commit a844ef46fa
4 changed files with 20 additions and 31 deletions
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1
arch/x86/include/asm/numa_64.h
View file

@ -35,6 +35,7 @@ extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
#define FAKE_NODE_MIN_SIZE ((u64)32 << 20)
#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))
void numa_emu_cmdline(char *);
int __init find_node_by_addr(unsigned long addr);
#endif /* CONFIG_NUMA_EMU */
#else
static inline int numa_cpu_node(int cpu) { return NUMA_NO_NODE; }

13
arch/x86/mm/amdtopology_64.c
View file

@ -205,19 +205,6 @@ static s16 fake_apicid_to_node[MAX_LOCAL_APIC] __initdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
};
static int __init find_node_by_addr(unsigned long addr)
{
int ret = NUMA_NO_NODE;
int i;
for (i = 0; i < 8; i++)
if (addr >= numa_nodes[i].start && addr < numa_nodes[i].end) {
ret = i;
break;
}
return ret;
}
/*
* For NUMA emulation, fake proximity domain (_PXM) to node id mappings must be
* setup to represent the physical topology but reflect the emulated

19
arch/x86/mm/numa_64.c
View file

@ -430,6 +430,25 @@ void __init numa_emu_cmdline(char *str)
cmdline = str;
}
int __init find_node_by_addr(unsigned long addr)
{
int ret = NUMA_NO_NODE;
int i;
for_each_node_mask(i, mem_nodes_parsed) {
/*
* Find the real node that this emulated node appears on. For
* the sake of simplicity, we only use a real node's starting
* address to determine which emulated node it appears on.
*/
if (addr >= numa_nodes[i].start && addr < numa_nodes[i].end) {
ret = i;
break;
}
}
return ret;
}
static int __init setup_physnodes(unsigned long start, unsigned long end)
{
int ret = 0;

18
arch/x86/mm/srat_64.c
View file

@ -277,24 +277,6 @@ static int fake_node_to_pxm_map[MAX_NUMNODES] __initdata = {
static s16 fake_apicid_to_node[MAX_LOCAL_APIC] __initdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
};
static int __init find_node_by_addr(unsigned long addr)
{
int ret = NUMA_NO_NODE;
int i;
for_each_node_mask(i, mem_nodes_parsed) {
/*
* Find the real node that this emulated node appears on. For
* the sake of simplicity, we only use a real node's starting
* address to determine which emulated node it appears on.
*/
if (addr >= numa_nodes[i].start && addr < numa_nodes[i].end) {
ret = i;
break;
}
}
return ret;
}
/*
* In NUMA emulation, we need to setup proximity domain (_PXM) to node ID