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- Allow the physical memory size that will be actually used by the kernel to

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be overridden by setting hw.physmem.
- Fix a vm_map_find arg, we don't want to find space.
- Add tracing and statistics for off colored pages.
- Detect "stupid" pmap_kenters (same virtual and physical as existing
  mapping), and do nothing in that case.
This commit is contained in:
Jake Burkholder 2003-03-31 19:56:55 +00:00
parent 726f07979c
commit c82feacd9b
2 changed files with 44 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
sys/sparc64/sparc64/pmap.c
View File

@ -182,6 +182,8 @@ PMAP_STATS_VAR(pmap_nenter_update);
PMAP_STATS_VAR(pmap_nenter_replace);
PMAP_STATS_VAR(pmap_nenter_new);
PMAP_STATS_VAR(pmap_nkenter);
PMAP_STATS_VAR(pmap_nkenter_oc);
PMAP_STATS_VAR(pmap_nkenter_stupid);
PMAP_STATS_VAR(pmap_nkremove);
PMAP_STATS_VAR(pmap_nqenter);
PMAP_STATS_VAR(pmap_nqremove);
@ -298,9 +300,19 @@ pmap_bootstrap(vm_offset_t ekva)
CTR0(KTR_PMAP, "pmap_bootstrap: physical memory");
qsort(mra, sz, sizeof (*mra), mr_cmp);
physsz = 0;
getenv_quad("hw.physmem", &physmem);
for (i = 0, j = 0; i < sz; i++, j += 2) {
CTR2(KTR_PMAP, "start=%#lx size=%#lx", mra[i].mr_start,
mra[i].mr_size);
if (physmem != 0 && btoc(physsz + mra[i].mr_size) >= physmem) {
if (btoc(physsz) < physmem) {
phys_avail[j] = mra[i].mr_start;
phys_avail[j + 1] = mra[i].mr_start +
(ctob(physmem) - physsz);
physsz = ctob(physmem);
}
break;
}
phys_avail[j] = mra[i].mr_start;
phys_avail[j + 1] = mra[i].mr_start + mra[i].mr_size;
physsz += mra[i].mr_size;
@ -612,7 +624,7 @@ pmap_init(vm_offset_t phys_start, vm_offset_t phys_end)
size = translations[i].om_size;
if (addr < VM_MIN_PROM_ADDRESS || addr > VM_MAX_PROM_ADDRESS)
continue;
result = vm_map_find(kernel_map, NULL, 0, &addr, size, TRUE,
result = vm_map_find(kernel_map, NULL, 0, &addr, size, FALSE,
VM_PROT_ALL, VM_PROT_ALL, 0);
if (result != KERN_SUCCESS || addr != translations[i].om_start)
panic("pmap_init: vm_map_find");
@ -806,6 +818,7 @@ pmap_cache_remove(vm_page_t m, vm_offset_t va)
void
pmap_kenter(vm_offset_t va, vm_offset_t pa)
{
vm_offset_t opa;
vm_offset_t ova;
struct tte *tp;
vm_page_t om;
@ -817,9 +830,23 @@ pmap_kenter(vm_offset_t va, vm_offset_t pa)
m = PHYS_TO_VM_PAGE(pa);
CTR4(KTR_PMAP, "pmap_kenter: va=%#lx pa=%#lx tp=%p data=%#lx",
va, pa, tp, tp->tte_data);
if (m->pc != DCACHE_COLOR(va)) {
CTR6(KTR_CT2,
"pmap_kenter: off colour va=%#lx pa=%#lx o=%p oc=%#lx ot=%d pi=%#lx",
va, pa, m->object,
m->object ? m->object->pg_color : -1,
m->object ? m->object->type : -1,
m->pindex);
PMAP_STATS_INC(pmap_nkenter_oc);
}
if ((tp->tte_data & TD_V) != 0) {
om = PHYS_TO_VM_PAGE(TTE_GET_PA(tp));
opa = TTE_GET_PA(tp);
ova = TTE_GET_VA(tp);
if (pa == opa && va == ova) {
PMAP_STATS_INC(pmap_nkenter_stupid);
return;
}
om = PHYS_TO_VM_PAGE(opa);
TAILQ_REMOVE(&om->md.tte_list, tp, tte_link);
pmap_cache_remove(om, ova);
if (va != ova)

15
sys/sparc64/sparc64/tsb.c
View File

@ -69,7 +69,9 @@ PMAP_STATS_VAR(tsb_nrepl);
PMAP_STATS_VAR(tsb_nlookup_k);
PMAP_STATS_VAR(tsb_nlookup_u);
PMAP_STATS_VAR(tsb_nenter_k);
PMAP_STATS_VAR(tsb_nenter_k_oc);
PMAP_STATS_VAR(tsb_nenter_u);
PMAP_STATS_VAR(tsb_nenter_u_oc);
PMAP_STATS_VAR(tsb_nforeach);
struct tte *tsb_kernel;
@ -114,6 +116,19 @@ tsb_tte_enter(pmap_t pm, vm_page_t m, vm_offset_t va, u_long sz, u_long data)
int b0;
int i;
if (m->pc != DCACHE_COLOR(va)) {
CTR6(KTR_CT2,
"tsb_tte_enter: off colour va=%#lx pa=%#lx o=%p oc=%#lx ot=%d pi=%#lx",
va, VM_PAGE_TO_PHYS(m), m->object,
m->object ? m->object->pg_color : -1,
m->object ? m->object->type : -1,
m->pindex);
if (pm == kernel_pmap)
PMAP_STATS_INC(tsb_nenter_k_oc);
else
PMAP_STATS_INC(tsb_nenter_u_oc);
}
if (pm == kernel_pmap) {
PMAP_STATS_INC(tsb_nenter_k);
tp = tsb_kvtotte(va);