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Panic if UMA_ZONE_PCPU is created at early stages of boot, when mp_ncpus

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isn't yet initialized. Otherwise we will panic at first allocation later.

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This commit is contained in:
glebius 2013-04-22 09:02:23 +00:00
parent 3594d490ac
commit 18dd370b59
1 changed files with 1 additions and 0 deletions
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sys/vm/uma_core.c
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@ -1139,6 +1139,7 @@ keg_small_init(uma_keg_t keg)
u_int shsize; u_int shsize;
if (keg->uk_flags & UMA_ZONE_PCPU) { if (keg->uk_flags & UMA_ZONE_PCPU) {
KASSERT(mp_ncpus > 0, ("%s: ncpus %d\n", __func__, mp_ncpus));
keg->uk_slabsize = sizeof(struct pcpu); keg->uk_slabsize = sizeof(struct pcpu);
keg->uk_ppera = howmany(mp_ncpus * sizeof(struct pcpu), keg->uk_ppera = howmany(mp_ncpus * sizeof(struct pcpu),
PAGE_SIZE); PAGE_SIZE);