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| author | Tejun Heo | 2011-01-23 14:37:40 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2011-01-28 14:54:09 +0100 |
| commit | 645a79195f66eb68ef3ab2b21d9829ac3aa085a9 (patch) | |
| tree | 5808c94ad0371f70a391e1e77baf12465969e19c /arch/x86/include/asm/numa.h | |
| parent | x86: Unify cpu/apicid <-> NUMA node mapping between 32 and 64bit (diff) | |
| download | kernel-qcow2-linux-645a79195f66eb68ef3ab2b21d9829ac3aa085a9.tar.gz kernel-qcow2-linux-645a79195f66eb68ef3ab2b21d9829ac3aa085a9.tar.xz kernel-qcow2-linux-645a79195f66eb68ef3ab2b21d9829ac3aa085a9.zip | |
x86: Unify CPU -> NUMA node mapping between 32 and 64bit
Unlike 64bit, 32bit has been using its own cpu_to_node_map[] for
CPU -> NUMA node mapping. Replace it with early_percpu variable
x86_cpu_to_node_map and share the mapping code with 64bit.
* USE_PERCPU_NUMA_NODE_ID is now enabled for 32bit too.
* x86_cpu_to_node_map and numa_set/clear_node() are moved from
numa_64 to numa. For now, on 32bit, x86_cpu_to_node_map is initialized
with 0 instead of NUMA_NO_NODE. This is to avoid introducing unexpected
behavior change and will be updated once init path is unified.
* srat_detect_node() is now enabled for x86_32 too. It calls
numa_set_node() and initializes the mapping making explicit
cpu_to_node_map[] updates from map/unmap_cpu_to_node() unnecessary.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: eric.dumazet@gmail.com
Cc: yinghai@kernel.org
Cc: brgerst@gmail.com
Cc: gorcunov@gmail.com
Cc: penberg@kernel.org
Cc: shaohui.zheng@intel.com
Cc: rientjes@google.com
LKML-Reference: <1295789862-25482-15-git-send-email-tj@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: David Rientjes <rientjes@google.com>
Diffstat (limited to 'arch/x86/include/asm/numa.h')
| -rw-r--r-- | arch/x86/include/asm/numa.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/include/asm/numa.h b/arch/x86/include/asm/numa.h index 5e01c768a575..2b21fff9f655 100644 --- a/arch/x86/include/asm/numa.h +++ b/arch/x86/include/asm/numa.h @@ -30,4 +30,12 @@ static inline void set_apicid_to_node(int apicid, s16 node) # include "numa_64.h" #endif +#ifdef CONFIG_NUMA +extern void __cpuinit numa_set_node(int cpu, int node); +extern void __cpuinit numa_clear_node(int cpu); +#else /* CONFIG_NUMA */ +static inline void numa_set_node(int cpu, int node) { } +static inline void numa_clear_node(int cpu) { } +#endif /* CONFIG_NUMA */ + #endif /* _ASM_X86_NUMA_H */ |