diff options
| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2020-09-30 22:05:43 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-10-02 18:51:57 +0200 |
| commit | 73bf7382debb1a93fef5ff38222c6a3b62dfea44 (patch) | |
| tree | 508355b17c1aca27fb4aee94a0eda716c1a63e4b /arch/x86/mm/numa.c | |
| parent | 894c26a1c274b8eafbb4b1dad67e70e51a106061 (diff) | |
x86: Support Generic Initiator only proximity domains
In common with memoryless domains only register GI domains
if the proximity node is not online. If a domain is already
a memory containing domain, or a memoryless domain there is
nothing to do just because it also contains a Generic Initiator.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch/x86/mm/numa.c')
| -rw-r--r-- | arch/x86/mm/numa.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index aa76ec2d359b..22d3e5ade3ae 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -748,6 +748,27 @@ static void __init init_memory_less_node(int nid) } /* + * A node may exist which has one or more Generic Initiators but no CPUs and no + * memory. + * + * This function must be called after init_cpu_to_node(), to ensure that any + * memoryless CPU nodes have already been brought online, and before the + * node_data[nid] is needed for zone list setup in build_all_zonelists(). + * + * When this function is called, any nodes containing either memory and/or CPUs + * will already be online and there is no need to do anything extra, even if + * they also contain one or more Generic Initiators. + */ +void __init init_gi_nodes(void) +{ + int nid; + + for_each_node_state(nid, N_GENERIC_INITIATOR) + if (!node_online(nid)) + init_memory_less_node(nid); +} + +/* * Setup early cpu_to_node. * * Populate cpu_to_node[] only if x86_cpu_to_apicid[], |