Started looking at making malloc mpsafe.
First issue I came across was this brokenish code in
uma_core.c:page_alloc():
if (lockstatus(&kernel_map->lock, NULL)) {
*pflag = UMA_SLAB_KMEM;
p = (void *) kmem_malloc(kmem_map, bytes, wait);
} else {
*pflag = UMA_SLAB_KMAP;
p = (void *) kmem_alloc(kernel_map, bytes);
}
using lockstatus won't work for smp.
I think a solution is to do a trylock on the kmem_map, then have
kmem_malloc either recurse on the lock, or take a flag to tell it
not to bother locking.
?
--
-Alfred Perlstein [[EMAIL PROTECTED]]
'Instead of asking why a piece of software is using "1970s technology,"
start asking why software is ignoring 30 years of accumulated wisdom.'
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