On 2021/11/7 23:20, Dave Hansen wrote:
On 11/7/21 1:33 AM, Baolin Wang wrote:Thanks for your suggestion. After some thinking, can we change the node_demotion[] structure like below? Which means one source node can be demoted to mutiple target node, and we can set up the target node mask according to the node distance. How do you think? Thanks. static nodemask_t node_demotion[MAX_NUMNODES] __read_mostly = {[0 ... MAX_NUMNODES - 1] = NODE_MASK_NONE};How large is that in the worst case?
For the worst case (MAX_NUMNODES=1024), the size of the node_demotion is 131072 bytes, while the size of original data structure is 4096 bytes. Maybe we can allocate the node_demotion dynamically?
