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bbc9e2f452
The mapping between cpu/apicid and node is done via apicid_to_node[] on 64bit and apicid_2_node[] + apic->x86_32_numa_cpu_node() on 32bit. This difference makes it difficult to further unify 32 and 64bit NUMA handling. This patch unifies it by replacing both apicid_to_node[] and apicid_2_node[] with __apicid_to_node[] array, which is accessed by two accessors - set_apicid_to_node() and numa_cpu_node(). On 64bit, numa_cpu_node() always consults __apicid_to_node[] directly while 32bit goes through apic->numa_cpu_node() method to allow apic implementations to override it. srat_detect_node() for amd cpus contains workaround for broken NUMA configuration which assumes relationship between APIC ID, HT node ID and NUMA topology. Leave it to access __apicid_to_node[] directly as mapping through CPU might result in undesirable behavior change. The comment is reformatted and updated to note the ugliness. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Pekka Enberg <penberg@kernel.org> Cc: eric.dumazet@gmail.com Cc: yinghai@kernel.org Cc: brgerst@gmail.com Cc: gorcunov@gmail.com Cc: shaohui.zheng@intel.com Cc: rientjes@google.com LKML-Reference: <1295789862-25482-14-git-send-email-tj@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: David Rientjes <rientjes@google.com> |
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| .. | ||
| cpufreq | ||
| mcheck | ||
| mtrr | ||
| .gitignore | ||
| amd.c | ||
| bugs.c | ||
| bugs_64.c | ||
| centaur.c | ||
| common.c | ||
| cpu.h | ||
| cyrix.c | ||
| hypervisor.c | ||
| intel.c | ||
| intel_cacheinfo.c | ||
| Makefile | ||
| mkcapflags.pl | ||
| mshyperv.c | ||
| perf_event.c | ||
| perf_event_amd.c | ||
| perf_event_intel.c | ||
| perf_event_intel_ds.c | ||
| perf_event_intel_lbr.c | ||
| perf_event_p4.c | ||
| perf_event_p6.c | ||
| perfctr-watchdog.c | ||
| powerflags.c | ||
| proc.c | ||
| scattered.c | ||
| sched.c | ||
| topology.c | ||
| transmeta.c | ||
| umc.c | ||
| vmware.c | ||