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| author | Nishanth Aravamudan <nacc@linux.vnet.ibm.com> | 2014-05-19 18:14:23 (GMT) |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-05-28 03:35:33 (GMT) |
| commit | 8c272261194dfda11cc046fbe808e052f6f284eb (patch) | |
| tree | 468cda65465b0f02bb1b0bf332a5bc3e8cb16538 /arch/powerpc/kernel | |
| parent | 86969cf7330a53c93edfd1bf2c28ad053e289162 (diff) | |
| download | linux-8c272261194dfda11cc046fbe808e052f6f284eb.tar.xz | |
powerpc/numa: Enable USE_PERCPU_NUMA_NODE_ID
Based off 3bccd996 for ia64, convert powerpc to use the generic per-CPU
topology tracking, specifically:
initialize per cpu numa_node entry in start_secondary
remove the powerpc cpu_to_node()
define CONFIG_USE_PERCPU_NUMA_NODE_ID if NUMA
Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/smp.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index e2a4232..d7252ad 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -390,6 +390,7 @@ void smp_prepare_boot_cpu(void) #ifdef CONFIG_PPC64 paca[boot_cpuid].__current = current; #endif + set_numa_node(numa_cpu_lookup_table[boot_cpuid]); current_set[boot_cpuid] = task_thread_info(current); } @@ -750,6 +751,11 @@ void start_secondary(void *unused) } traverse_core_siblings(cpu, true); + /* + * numa_node_id() works after this. + */ + set_numa_node(numa_cpu_lookup_table[cpu]); + smp_wmb(); notify_cpu_starting(cpu); set_cpu_online(cpu, true); |