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| author | Tejun Heo <tj@kernel.org> | 2011-02-16 17:11:08 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2011-02-16 17:11:08 +0100 |
| commit | 8968dab8ad90ea16ef92f2406868354ea3ab6bb9 (patch) | |
| tree | e385ef373b7ab2f5f9a1457a2910a3d57d61bad7 /arch/x86/mm/numa_64.c | |
| parent | 5d371b08fea80c4fb7450d31e5a4e35b438ef850 (diff) | |
| download | op-kernel-dev-8968dab8ad90ea16ef92f2406868354ea3ab6bb9.zip op-kernel-dev-8968dab8ad90ea16ef92f2406868354ea3ab6bb9.tar.gz | |
x86-64, NUMA: Remove %NULL @nodeids handling from compute_hash_shift()
numa_emulation() called compute_hash_shift() with %NULL @nodeids which
meant identity mapping between index and nodeid. Make
numa_emulation() build identity array and drop %NULL @nodeids handling
from populate_memnodemap() and thus from compute_hash_shift(). This
is to prepare for transition to using memblks instead.
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>
Diffstat (limited to 'arch/x86/mm/numa_64.c')
| -rw-r--r-- | arch/x86/mm/numa_64.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index e211c00..243d18d 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -63,12 +63,7 @@ static int __init populate_memnodemap(const struct bootnode *nodes, do { if (memnodemap[addr >> shift] != NUMA_NO_NODE) return -1; - - if (!nodeids) - memnodemap[addr >> shift] = i; - else - memnodemap[addr >> shift] = nodeids[i]; - + memnodemap[addr >> shift] = nodeids[i]; addr += (1UL << shift); } while (addr < end); res = 1; @@ -706,6 +701,7 @@ static int __init split_nodes_size_interleave(u64 addr, u64 max_addr, u64 size) static int __init numa_emulation(unsigned long start_pfn, unsigned long last_pfn, int acpi, int amd) { + static int nodeid[NR_NODE_MEMBLKS] __initdata; u64 addr = start_pfn << PAGE_SHIFT; u64 max_addr = last_pfn << PAGE_SHIFT; int num_nodes; @@ -730,7 +726,11 @@ static int __init numa_emulation(unsigned long start_pfn, if (num_nodes < 0) return num_nodes; - memnode_shift = compute_hash_shift(nodes, num_nodes, NULL); + + for (i = 0; i < ARRAY_SIZE(nodeid); i++) + nodeid[i] = i; + + memnode_shift = compute_hash_shift(nodes, num_nodes, nodeid); if (memnode_shift < 0) { memnode_shift = 0; printk(KERN_ERR "No NUMA hash function found. NUMA emulation " |
