Author: kib
Date: Wed Sep 28 15:01:20 2011
New Revision: 225841
URL: http://svn.freebsd.org/changeset/base/225841
Log:
Remove locking of the vm page queues from several pmaps, which only
protected the dirty mask updates. The dirty mask updates are handled
by atomics after the r225840.
Submitted by: alc
Tested by: flo (sparc64)
MFC after: 2 weeks
Modified:
head/sys/ia64/ia64/pmap.c
head/sys/powerpc/booke/pmap.c
head/sys/sparc64/sparc64/pmap.c
Modified: head/sys/ia64/ia64/pmap.c
==============================================================================
--- head/sys/ia64/ia64/pmap.c Wed Sep 28 14:57:50 2011 (r225840)
+++ head/sys/ia64/ia64/pmap.c Wed Sep 28 15:01:20 2011 (r225841)
@@ -1486,7 +1486,6 @@ pmap_protect(pmap_t pmap, vm_offset_t sv
if ((sva & PAGE_MASK) || (eva & PAGE_MASK))
panic("pmap_protect: unaligned addresses");
- vm_page_lock_queues();
PMAP_LOCK(pmap);
oldpmap = pmap_switch(pmap);
for ( ; sva < eva; sva += PAGE_SIZE) {
@@ -1514,7 +1513,6 @@ pmap_protect(pmap_t pmap, vm_offset_t sv
pmap_pte_prot(pmap, pte, prot);
pmap_invalidate_page(sva);
}
- vm_page_unlock_queues();
pmap_switch(oldpmap);
PMAP_UNLOCK(pmap);
}
Modified: head/sys/powerpc/booke/pmap.c
==============================================================================
--- head/sys/powerpc/booke/pmap.c Wed Sep 28 14:57:50 2011
(r225840)
+++ head/sys/powerpc/booke/pmap.c Wed Sep 28 15:01:20 2011
(r225841)
@@ -1918,7 +1918,6 @@ mmu_booke_protect(mmu_t mmu, pmap_t pmap
if (prot & VM_PROT_WRITE)
return;
- vm_page_lock_queues();
PMAP_LOCK(pmap);
for (va = sva; va < eva; va += PAGE_SIZE) {
if ((pte = pte_find(mmu, pmap, va)) != NULL) {
@@ -1941,7 +1940,6 @@ mmu_booke_protect(mmu_t mmu, pmap_t pmap
}
}
PMAP_UNLOCK(pmap);
- vm_page_unlock_queues();
}
/*
Modified: head/sys/sparc64/sparc64/pmap.c
==============================================================================
--- head/sys/sparc64/sparc64/pmap.c Wed Sep 28 14:57:50 2011
(r225840)
+++ head/sys/sparc64/sparc64/pmap.c Wed Sep 28 15:01:20 2011
(r225841)
@@ -1423,6 +1423,7 @@ pmap_protect_tte(struct pmap *pm, struct
u_long data;
vm_page_t m;
+ PMAP_LOCK_ASSERT(pm, MA_OWNED);
data = atomic_clear_long(&tp->tte_data, TD_SW | TD_W);
if ((data & (TD_PV | TD_W)) == (TD_PV | TD_W)) {
m = PHYS_TO_VM_PAGE(TD_PA(data));
@@ -1451,7 +1452,6 @@ pmap_protect(pmap_t pm, vm_offset_t sva,
if (prot & VM_PROT_WRITE)
return;
- vm_page_lock_queues();
PMAP_LOCK(pm);
if (eva - sva > PMAP_TSB_THRESH) {
tsb_foreach(pm, NULL, sva, eva, pmap_protect_tte);
@@ -1463,7 +1463,6 @@ pmap_protect(pmap_t pm, vm_offset_t sva,
tlb_range_demap(pm, sva, eva - 1);
}
PMAP_UNLOCK(pm);
- vm_page_unlock_queues();
}
/*
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