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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2006-09-25 16:25:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-25 17:38:36 -0700 |
| commit | 3212fe1594e577463bc8601d28aa008f520c3377 (patch) | |
| tree | 6f4270c825c2df9f4a361360dab0963ecaed34c1 /arch/ia64/kernel/topology.c | |
| parent | 08992986497471ce575f23796268fb1b50b5c2ab (diff) | |
| download | blackbird-op-linux-3212fe1594e577463bc8601d28aa008f520c3377.tar.gz blackbird-op-linux-3212fe1594e577463bc8601d28aa008f520c3377.zip | |
[PATCH] cpu to node relationship fixup: map cpu to node
Assume that a cpu is *physically* offlined at boot time...
Because smpboot.c::smp_boot_cpu_map() canoot find cpu's sapicid,
numa.c::build_cpu_to_node_map() cannot build cpu<->node map for
offlined cpu.
For such cpus, cpu_to_node map should be fixed at cpu-hot-add.
This mapping should be done before cpu onlining.
This patch also handles cpu hotremove case.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/ia64/kernel/topology.c')
| -rw-r--r-- | arch/ia64/kernel/topology.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c index f648c610b10c..05bdf7affb43 100644 --- a/arch/ia64/kernel/topology.c +++ b/arch/ia64/kernel/topology.c @@ -36,6 +36,9 @@ int arch_register_cpu(int num) */ if (!can_cpei_retarget() && is_cpu_cpei_target(num)) sysfs_cpus[num].cpu.no_control = 1; +#ifdef CONFIG_NUMA + map_cpu_to_node(num, node_cpuid[num].nid); +#endif #endif return register_cpu(&sysfs_cpus[num].cpu, num); @@ -45,7 +48,8 @@ int arch_register_cpu(int num) void arch_unregister_cpu(int num) { - return unregister_cpu(&sysfs_cpus[num].cpu); + unregister_cpu(&sysfs_cpus[num].cpu); + unmap_cpu_from_node(num, cpu_to_node(num)); } EXPORT_SYMBOL(arch_register_cpu); EXPORT_SYMBOL(arch_unregister_cpu); |
