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| author | Andi Kleen <ak@suse.de> | 2005-11-05 17:25:53 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-14 19:55:14 -0800 |
| commit | 69d81fcde7797342417591ba7affb372b9c86eae (patch) | |
| tree | 97fbc73fd20f8ebc313b2bc41367a8efe36c2c3d /arch/x86_64/mm/numa.c | |
| parent | 50895c5d76e15d8af480eff1aaab5770cabbc2c2 (diff) | |
| download | kernel_samsung_smdk4412-69d81fcde7797342417591ba7affb372b9c86eae.zip kernel_samsung_smdk4412-69d81fcde7797342417591ba7affb372b9c86eae.tar.gz kernel_samsung_smdk4412-69d81fcde7797342417591ba7affb372b9c86eae.tar.bz2 | |
[PATCH] x86_64: Speed up numa_node_id by putting it directly into the PDA
Not go from the CPU number to an mapping array.
Mode number is often used now in fast paths.
This also adds a generic numa_node_id to all the topology includes
Suggested by Eric Dumazet
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/mm/numa.c')
| -rw-r--r-- | arch/x86_64/mm/numa.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c index 18e86e2..4bf6458 100644 --- a/arch/x86_64/mm/numa.c +++ b/arch/x86_64/mm/numa.c @@ -156,7 +156,7 @@ void __init numa_init_array(void) for (i = 0; i < NR_CPUS; i++) { if (cpu_to_node[i] != NUMA_NO_NODE) continue; - cpu_to_node[i] = rr; + numa_set_node(i, rr); rr = next_node(rr, node_online_map); if (rr == MAX_NUMNODES) rr = first_node(node_online_map); @@ -242,7 +242,7 @@ void __init numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn) nodes_clear(node_online_map); node_set_online(0); for (i = 0; i < NR_CPUS; i++) - cpu_to_node[i] = 0; + numa_set_node(i, 0); node_to_cpumask[0] = cpumask_of_cpu(0); setup_node_bootmem(0, start_pfn << PAGE_SHIFT, end_pfn << PAGE_SHIFT); } @@ -252,6 +252,12 @@ __cpuinit void numa_add_cpu(int cpu) set_bit(cpu, &node_to_cpumask[cpu_to_node(cpu)]); } +void __cpuinit numa_set_node(int cpu, int node) +{ + cpu_pda[cpu].nodenumber = node; + cpu_to_node[cpu] = node; +} + unsigned long __init numa_free_all_bootmem(void) { int i; |