The branch main has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=17d0f830dddf38724068f4139b6bef9a5dab70c5
commit 17d0f830dddf38724068f4139b6bef9a5dab70c5 Author: Mark Johnston <[email protected]> AuthorDate: 2021-02-18 15:50:57 +0000 Commit: Mark Johnston <[email protected]> CommitDate: 2021-02-18 15:51:38 +0000 arm64: Include NUMA locality info in the CPU topology The scheduler uses this topology to try and preserve locality when migrating threads between CPUs and when performing work stealing. Ensure that on NUMA systems it will at least take the NUMA topology into account. Reviewed by: mmel Submitted by: Klara, Inc. Sponsored by: Ampere Computing MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D28579 --- sys/arm64/arm64/mp_machdep.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/sys/arm64/arm64/mp_machdep.c b/sys/arm64/arm64/mp_machdep.c index 8f1118d36bf5..8d5d82879571 100644 --- a/sys/arm64/arm64/mp_machdep.c +++ b/sys/arm64/arm64/mp_machdep.c @@ -437,8 +437,35 @@ ipi_stop(void *dummy __unused) struct cpu_group * cpu_topo(void) { + struct cpu_group *dom, *root; + int i; + + root = smp_topo_alloc(1); + dom = smp_topo_alloc(vm_ndomains); + + root->cg_parent = NULL; + root->cg_child = dom; + CPU_COPY(&all_cpus, &root->cg_mask); + root->cg_count = mp_ncpus; + root->cg_children = vm_ndomains; + root->cg_level = CG_SHARE_NONE; + root->cg_flags = 0; + + /* + * Redundant layers will be collapsed by the caller so we don't need a + * special case for a single domain. + */ + for (i = 0; i < vm_ndomains; i++, dom++) { + dom->cg_parent = root; + dom->cg_child = NULL; + CPU_COPY(&cpuset_domain[i], &dom->cg_mask); + dom->cg_count = CPU_COUNT(&dom->cg_mask); + dom->cg_children = 0; + dom->cg_level = CG_SHARE_L3; + dom->cg_flags = 0; + } - return (smp_topo_none()); + return (root); } /* Determine if we running MP machine */ _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "[email protected]"
