On Fri, 25 Oct 2024, Peter Zijlstra wrote:\n
static int __init futex_init(void)
{
- unsigned int futex_shift;
- unsigned long i;
+ unsigned int order, n;
+ unsigned long size, i;
#ifdef CONFIG_BASE_SMALL
futex_hashsize = 16;
#else
- futex_hashsize = roundup_pow_of_two(256 * num_possible_cpus());
+ futex_hashsize = 256 * num_possible_cpus();
+ futex_hashsize /= num_possible_nodes();
+ futex_hashsize = roundup_pow_of_two(futex_hashsize);
#endif
+ futex_hashshift = ilog2(futex_hashsize);
+ size = sizeof(struct futex_hash_bucket) * futex_hashsize;
+ order = get_order(size);
+
+ for_each_node(n) {
Probably want to skip nodes that don't have CPUs, those will never
have the remote for .node value.
