Author: kib
Date: Sat Dec 18 11:31:32 2010
New Revision: 216516
URL: http://svn.freebsd.org/changeset/base/216516
Log:
In pmap_extract(), unlock pmap lock earlier. The calculation does not need
the lock when operating on local variables.
Reviewed by: alc
Modified:
head/sys/i386/i386/pmap.c
Modified: head/sys/i386/i386/pmap.c
==============================================================================
--- head/sys/i386/i386/pmap.c Sat Dec 18 10:09:07 2010 (r216515)
+++ head/sys/i386/i386/pmap.c Sat Dec 18 11:31:32 2010 (r216516)
@@ -1299,13 +1299,13 @@ pmap_extract(pmap_t pmap, vm_offset_t va
ptep = pmap_pte(pmap, va);
pte = (ptep != NULL) ? *ptep : 0;
pmap_pte_release(ptep);
+ PMAP_UNLOCK(pmap);
if ((pte & PG_V) != 0) {
if ((pte & PG_PS) != 0)
rtval = (pte & PG_PS_FRAME) | (va & PDRMASK);
else
rtval = (pte & PG_FRAME) | (va & PAGE_MASK);
}
- PMAP_UNLOCK(pmap);
return (rtval);
}
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