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| author | Zhenlei Huang <zlei@FreeBSD.org> | 2023-10-12 10:14:49 +0000 |
|---|---|---|
| committer | Zhenlei Huang <zlei@FreeBSD.org> | 2023-10-19 14:17:29 +0000 |
| commit | de2b262fde2f0955cff5cade6cca58b06fbdd37f (patch) | |
| tree | 1c01e95e8cb661f682875de68d5ec06ff46c7e6e | |
| parent | c2be2c87dc2100b107a20ddd918ed9d74b8533e3 (diff) | |
| download | src-de2b262fde2f0955cff5cade6cca58b06fbdd37f.tar.gz src-de2b262fde2f0955cff5cade6cca58b06fbdd37f.zip | |
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
(cherry picked from commit a55fbda874db31b804490567c69502c891b6ff61)
(cherry picked from commit cb5bc8a748dfefc68e3905e8fdf17e0484844383)
| -rw-r--r-- | sys/vm/vm_page.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c index 76c50ba676c2..d21022930396 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++) { |