git: a55fbda874db - main - vm_page: Add corresponding sysctl knob for loader tunable
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Date: Thu, 12 Oct 2023 10:15:33 UTC
The branch main has been updated by zlei: URL: https://cgit.FreeBSD.org/src/commit/?id=a55fbda874db31b804490567c69502c891b6ff61 commit a55fbda874db31b804490567c69502c891b6ff61 Author: Zhenlei Huang <zlei@FreeBSD.org> AuthorDate: 2023-10-12 10:14:49 +0000 Commit: Zhenlei Huang <zlei@FreeBSD.org> CommitDate: 2023-10-12 10:14:49 +0000 vm_page: Add corresponding sysctl knob for loader tunable The loader tunable 'vm.pgcache_zone_max_pcpu' does not have corresponding sysctl MIB entry. Add it so that it can be retrieved, and `sysctl -T` will also report it correctly. Reviewed by: markj MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D42138 --- sys/vm/vm_page.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c index 4f3c4ba2d4d7..8496a39154de 100644 --- a/sys/vm/vm_page.c +++ b/sys/vm/vm_page.c @@ -198,6 +198,11 @@ vm_page_init(void *dummy) bogus_page = vm_page_alloc_noobj(VM_ALLOC_WIRED); } +static int pgcache_zone_max_pcpu; +SYSCTL_INT(_vm, OID_AUTO, pgcache_zone_max_pcpu, + CTLFLAG_RDTUN | CTLFLAG_NOFETCH, &pgcache_zone_max_pcpu, 0, + "Per-CPU page cache size"); + /* * The cache page zone is initialized later since we need to be able to allocate * pages before UMA is fully initialized. @@ -209,9 +214,8 @@ vm_page_init_cache_zones(void *dummy __unused) struct vm_pgcache *pgcache; int cache, domain, maxcache, pool; - maxcache = 0; - TUNABLE_INT_FETCH("vm.pgcache_zone_max_pcpu", &maxcache); - maxcache *= mp_ncpus; + TUNABLE_INT_FETCH("vm.pgcache_zone_max_pcpu", &pgcache_zone_max_pcpu); + maxcache = pgcache_zone_max_pcpu * mp_ncpus; for (domain = 0; domain < vm_ndomains; domain++) { vmd = VM_DOMAIN(domain); for (pool = 0; pool < VM_NFREEPOOL; pool++) {