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author | Zhen Lei <thunder.leizhen@huawei.com> | 2016-09-01 08:55:04 +0200 |
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committer | Will Deacon <will.deacon@arm.com> | 2016-09-09 15:59:09 +0200 |
commit | 7ba5f605f3a0d9495aad539eeb8346d726dfc183 (patch) | |
tree | 2b237c38880de2d62b37f21a3e2243476a0c4423 /arch/arm64/mm | |
parent | arm64/numa: remove some useless code (diff) | |
download | linux-7ba5f605f3a0d9495aad539eeb8346d726dfc183.tar.xz linux-7ba5f605f3a0d9495aad539eeb8346d726dfc183.zip |
arm64/numa: remove the limitation that cpu0 must bind to node0
1. Remove the old binding code.
2. Read the nid of cpu0 from dts.
3. Fallback the nid of cpu0 to 0 when numa=off is set in bootargs.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/mm')
-rw-r--r-- | arch/arm64/mm/numa.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c index 0a15f010b64a..778a985c8a70 100644 --- a/arch/arm64/mm/numa.c +++ b/arch/arm64/mm/numa.c @@ -116,16 +116,24 @@ static void __init setup_node_to_cpumask_map(void) */ void numa_store_cpu_info(unsigned int cpu) { - map_cpu_to_node(cpu, numa_off ? 0 : cpu_to_node_map[cpu]); + map_cpu_to_node(cpu, cpu_to_node_map[cpu]); } void __init early_map_cpu_to_node(unsigned int cpu, int nid) { /* fallback to node 0 */ - if (nid < 0 || nid >= MAX_NUMNODES) + if (nid < 0 || nid >= MAX_NUMNODES || numa_off) nid = 0; cpu_to_node_map[cpu] = nid; + + /* + * We should set the numa node of cpu0 as soon as possible, because it + * has already been set up online before. cpu_to_node(0) will soon be + * called. + */ + if (!cpu) + set_cpu_numa_node(cpu, nid); } #ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA @@ -393,10 +401,6 @@ static int __init numa_init(int (*init_func)(void)) setup_node_to_cpumask_map(); - /* init boot processor */ - cpu_to_node_map[0] = 0; - map_cpu_to_node(0, 0); - return 0; } |