From: rahnds <rahnds@openbsd.org>
Date: Thu, 9 Jan 1997 03:07:15 +0000 (+0000)
Subject: support resident page count.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=f111aacc61e229a4c40298713890a3d01024fbec;p=openbsd

support resident page count.
Attempt at least, pmap doesn't allow
for exact tracking.
---

diff --git a/sys/arch/powerpc/powerpc/genassym.c b/sys/arch/powerpc/powerpc/genassym.c
index dc714df7243..0478d8d00ab 100644
--- a/sys/arch/powerpc/powerpc/genassym.c
+++ b/sys/arch/powerpc/powerpc/genassym.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: genassym.c,v 1.2 1996/12/28 06:22:00 rahnds Exp $	*/
+/*	$OpenBSD: genassym.c,v 1.3 1997/01/09 03:07:15 rahnds Exp $	*/
 /*	$NetBSD: genassym.c,v 1.1 1996/09/30 16:34:46 ws Exp $	*/
 
 /*
@@ -36,6 +36,9 @@
 #include <sys/param.h>
 #include <sys/time.h>
 #include <sys/proc.h>
+ #include <vm/vm.h>
+ #include <vm/vm_kern.h>
+
 
 #include <machine/pcb.h>
 #include <machine/pmap.h>
diff --git a/sys/arch/powerpc/powerpc/pmap.c b/sys/arch/powerpc/powerpc/pmap.c
index 71cfefecbe0..64e47f746b6 100644
--- a/sys/arch/powerpc/powerpc/pmap.c
+++ b/sys/arch/powerpc/powerpc/pmap.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pmap.c,v 1.2 1996/12/28 06:22:14 rahnds Exp $	*/
+/*	$OpenBSD: pmap.c,v 1.3 1997/01/09 03:07:16 rahnds Exp $	*/
 /*	$NetBSD: pmap.c,v 1.1 1996/09/30 16:34:52 ws Exp $	*/
 
 /*
@@ -873,7 +873,8 @@ pmap_enter_pv(pteidx, va, pind)
 }
 
 static void
-pmap_remove_pv(pteidx, va, pind, pte)
+pmap_remove_pv(pm, pteidx, va, pind, pte)
+	struct pmap *pm;                                            
 	int pteidx;
 	vm_offset_t va;
 	int pind;
@@ -905,8 +906,16 @@ pmap_remove_pv(pteidx, va, pind, pte)
 		if (npv) {
 			*pv = *npv;
 			pmap_free_pv(npv);
-		} else
+		} else {
 			pv->pv_idx = -1;
+		}
+		if (pm != NULL) {
+			/* if called from pmap_page_protect,
+			 * we don't know what pmap it was removed from.
+			 * BAD DESIGN.
+			 */
+			pm->pm_stats.resident_count--;
+		}
 	} else {
 		for (; npv = pv->pv_next; pv = npv)
 			if (pteidx == npv->pv_idx && va == npv->pv_va)
@@ -914,6 +923,9 @@ pmap_remove_pv(pteidx, va, pind, pte)
 		if (npv) {
 			pv->pv_next = npv->pv_next;
 			pmap_free_pv(npv);
+			if (pm != NULL) {
+				pm->pm_stats.resident_count--;
+			}
 		}
 #ifdef	DIAGNOSTIC
 		else
@@ -942,6 +954,8 @@ pmap_enter(pm, va, pa, prot, wired)
 	 * Have to remove any existing mapping first.
 	 */
 	pmap_remove(pm, va, va + NBPG - 1);
+
+	pm->pm_stats.resident_count++;
 	
 	/*
 	 * Compute the HTAB index.
@@ -1015,7 +1029,8 @@ pmap_remove(pm, va, endva)
 		idx = pteidx(sr = ptesr(pm->pm_sr, va), va);
 		for (ptp = ptable + idx * 8, i = 8; --i >= 0; ptp++)
 			if (ptematch(ptp, sr, va, PTE_VALID)) {
-				pmap_remove_pv(idx, va, pmap_page_index(ptp->pte_lo), ptp);
+				pmap_remove_pv(pm, idx, va,
+					pmap_page_index(ptp->pte_lo), ptp);
 				ptp->pte_hi &= ~PTE_VALID;
 				asm volatile ("sync");
 				tlbie(va);
@@ -1023,7 +1038,8 @@ pmap_remove(pm, va, endva)
 			}
 		for (ptp = ptable + (idx ^ ptab_mask) * 8, i = 8; --i >= 0; ptp++)
 			if (ptematch(ptp, sr, va, PTE_VALID | PTE_HID)) {
-				pmap_remove_pv(idx, va, pmap_page_index(ptp->pte_lo), ptp);
+				pmap_remove_pv(pm, idx, va,
+					pmap_page_index(ptp->pte_lo), ptp);
 				ptp->pte_hi &= ~PTE_VALID;
 				asm volatile ("sync");
 				tlbie(va);
@@ -1032,7 +1048,8 @@ pmap_remove(pm, va, endva)
 		for (po = potable[idx].lh_first; po; po = npo) {
 			npo = po->po_list.le_next;
 			if (ptematch(&po->po_pte, sr, va, 0)) {
-				pmap_remove_pv(idx, va, pmap_page_index(po->po_pte.pte_lo),
+				pmap_remove_pv(pm, idx, va,
+					pmap_page_index(po->po_pte.pte_lo),
 					       &po->po_pte);
 				LIST_REMOVE(po, po_list);
 				pofree(po, 1);
@@ -1275,7 +1292,7 @@ pmap_page_protect(pa, prot)
 		for (ptp = ptable + idx * 8, i = 8; --i >= 0; ptp++)
 			if ((ptp->pte_hi & PTE_VALID)
 			    && (ptp->pte_lo & PTE_RPGN) == pa) {
-				pmap_remove_pv(idx, va, pind, ptp);
+				pmap_remove_pv(NULL, idx, va, pind, ptp);
 				ptp->pte_hi &= ~PTE_VALID;
 				asm volatile ("sync");
 				tlbie(va);
@@ -1284,7 +1301,7 @@ pmap_page_protect(pa, prot)
 		for (ptp = ptable + (idx ^ ptab_mask) * 8, i = 8; --i >= 0; ptp++)
 			if ((ptp->pte_hi & PTE_VALID)
 			    && (ptp->pte_lo & PTE_RPGN) == pa) {
-				pmap_remove_pv(idx, va, pind, ptp);
+				pmap_remove_pv(NULL, idx, va, pind, ptp);
 				ptp->pte_hi &= ~PTE_VALID;
 				asm volatile ("sync");
 				tlbie(va);
@@ -1293,7 +1310,7 @@ pmap_page_protect(pa, prot)
 		for (po = potable[idx].lh_first; po; po = npo) {
 			npo = po->po_list.le_next;
 			if ((po->po_pte.pte_lo & PTE_RPGN) == pa) {
-				pmap_remove_pv(idx, va, pind, &po->po_pte);
+				pmap_remove_pv(NULL,idx, va, pind, &po->po_pte);
 				LIST_REMOVE(po, po_list);
 				pofree(po, 1);
 			}