On Dec 11, 8:54am, c...@chuq.com (Chuck Silvers) wrote:
-- Subject: Re: kernel memory allocation failures
| I haven't looked see exactly what the internal conditions are that lead to
| kmem_alloc(KM_SLEEP) returning NULL, so it's not clear whether having
| kmem_alloc() retry or panic in that situation would be better.
| but either of those would be better than adding code to all the callers.
http://nxr.netbsd.org/xref/src/sys/kern/subr_vmem.c#256
Where we are calling the pool code with PR_NOWAIT and the flags are not paid
attention to at all (except in the recursive calls).
And there is also:
http://nxr.netbsd.org/xref/src/sys/kern/subr_vmem.c#272
where the 3 bt_refill() calls are not even being checked (but at least
they use flags :-)
bt_refill
bt_add
vmem_xalloc
vmem_alloc
uvm_km_kmem_alloc
kmem_intr_alloc
kmem_alloc
Anyway...
christos
