diff options
| author |   dlg <dlg@openbsd.org> | 2016-10-27 09:40:20 +0000 |
|---|---|---|
| committer | dlg <dlg@openbsd.org> | 2016-10-27 09:40:20 +0000 |
| commit | 8457285f6725d0c8bf1657f004b70f448501cdfc (patch) | |
| tree | e3a3f27c70f22574d024897192a9201bcb6a936b /sys/kern/subr_percpu.c | |
| parent | Huawei squatted on BGP Path Attribute 30, and Cisco squatted on 31. So, (diff) | |
| download | wireguard-openbsd-8457285f6725d0c8bf1657f004b70f448501cdfc.tar.xz wireguard-openbsd-8457285f6725d0c8bf1657f004b70f448501cdfc.zip | |
use ncpusfound to size the percpu allocations.
ncpus is used on half the architectures to indicate the number of
cpus that have been hatched, and is used on them in things like ddb
to figure out how many cpus to shut down again.
ncpusfound is incremented during autoconf on MP machines to show
how big ncpus will probably become. percpu is initted after autoconf
but before cpus are hatched, so this works well.
Diffstat (limited to '')
| -rw-r--r-- | sys/kern/subr_percpu.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/sys/kern/subr_percpu.c b/sys/kern/subr_percpu.c index e396d92fe3a..8ff00635165 100644 --- a/sys/kern/subr_percpu.c +++ b/sys/kern/subr_percpu.c @@ -1,4 +1,4 @@ -/* $OpenBSD: subr_percpu.c,v 1.4 2016/10/24 23:58:33 dlg Exp $ */ +/* $OpenBSD: subr_percpu.c,v 1.5 2016/10/27 09:40:20 dlg Exp $ */ /* * Copyright (c) 2016 David Gwynne <dlg@openbsd.org> @@ -30,8 +30,8 @@ struct pool cpumem_pl; void percpu_init(void) { - pool_init(&cpumem_pl, sizeof(struct cpumem) * ncpus, 0, IPL_NONE, - PR_WAITOK, "percpumem", &pool_allocator_single); + pool_init(&cpumem_pl, sizeof(struct cpumem) * ncpusfound, 0, + IPL_NONE, PR_WAITOK, "percpumem", &pool_allocator_single); } struct cpumem * @@ -42,7 +42,7 @@ cpumem_get(struct pool *pp) cm = pool_get(&cpumem_pl, PR_WAITOK); - for (cpu = 0; cpu < ncpus; cpu++) + for (cpu = 0; cpu < ncpusfound; cpu++) cm[cpu].mem = pool_get(pp, PR_WAITOK | PR_ZERO); return (cm); @@ -53,7 +53,7 @@ cpumem_put(struct pool *pp, struct cpumem *cm) { unsigned int cpu; - for (cpu = 0; cpu < ncpus; cpu++) + for (cpu = 0; cpu < ncpusfound; cpu++) pool_put(pp, cm[cpu].mem); pool_put(&cpumem_pl, cm); @@ -69,7 +69,7 @@ cpumem_malloc(size_t sz, int type) cm = pool_get(&cpumem_pl, PR_WAITOK); - for (cpu = 0; cpu < ncpus; cpu++) + for (cpu = 0; cpu < ncpusfound; cpu++) cm[cpu].mem = malloc(sz, type, M_WAITOK | M_ZERO); return (cm); @@ -86,7 +86,7 @@ cpumem_malloc_ncpus(struct cpumem *bootcm, size_t sz, int type) cm = pool_get(&cpumem_pl, PR_WAITOK); cm[0].mem = bootcm[0].mem; - for (cpu = 1; cpu < ncpus; cpu++) + for (cpu = 1; cpu < ncpusfound; cpu++) cm[cpu].mem = malloc(sz, type, M_WAITOK | M_ZERO); return (cm); @@ -99,7 +99,7 @@ cpumem_free(struct cpumem *cm, int type, size_t sz) sz = roundup(sz, CACHELINESIZE); - for (cpu = 0; cpu < ncpus; cpu++) + for (cpu = 0; cpu < ncpusfound; cpu++) free(cm[cpu].mem, type, sz); pool_put(&cpumem_pl, cm); @@ -118,7 +118,7 @@ cpumem_next(struct cpumem_iter *i, struct cpumem *cm) { unsigned int cpu = ++i->cpu; - if (cpu >= ncpus) + if (cpu >= ncpusfound) return (NULL); return (cm[cpu].mem); |