| From: Oscar Salvador <osalvador@suse.de> |
| Subject: kernel,cpuset: use node-notifier instead of memory-notifier |
| Date: Mon, 16 Jun 2025 15:51:51 +0200 |
| |
| cpuset is only concerned when a numa node changes its memory state, as it |
| needs to know the current numa nodes with memory to keep an updated |
| mems_allowed mask. So stop using the memory notifier and use the new numa |
| node notifer instead. |
| |
| Link: https://lkml.kernel.org/r/20250616135158.450136-9-osalvador@suse.de |
| Signed-off-by: Oscar Salvador <osalvador@suse.de> |
| Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> |
| Reviewed-by: Harry Yoo <harry.yoo@oracle.com> |
| Reviewed-by: Vlastimil Babka <vbabka@suse.cz> |
| Acked-by: David Hildenbrand <david@redhat.com> |
| Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> |
| Cc: Rakie Kim <rakie.kim@sk.com> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| --- |
| |
| kernel/cgroup/cpuset.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/kernel/cgroup/cpuset.c~kernelcpuset-use-node-notifier-instead-of-memory-notifier |
| +++ a/kernel/cgroup/cpuset.c |
| @@ -4051,7 +4051,7 @@ void __init cpuset_init_smp(void) |
| cpumask_copy(top_cpuset.effective_cpus, cpu_active_mask); |
| top_cpuset.effective_mems = node_states[N_MEMORY]; |
| |
| - hotplug_memory_notifier(cpuset_track_online_nodes, CPUSET_CALLBACK_PRI); |
| + hotplug_node_notifier(cpuset_track_online_nodes, CPUSET_CALLBACK_PRI); |
| |
| cpuset_migrate_mm_wq = alloc_ordered_workqueue("cpuset_migrate_mm", 0); |
| BUG_ON(!cpuset_migrate_mm_wq); |
| _ |
