Changeset 9bda3af6 in mainline

Timestamp:

2006-03-13T10:17:27Z (19 years ago)

Author:

Jakub Vana <jakub.vana@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0967877

Parents:

d3dfa42

Message:

Better purge page selection.

Files:

• arch/ia64/src/mm/tlb.c (modified) (10 diffs)
• test/mm/purge1/test.c (modified) (1 diff)

arch/ia64/src/mm/tlb.c

@@ -95 +95 @@
 
 
-void tlb_invalidate_pages(asid_t asid, __address va, count_t cnt)
+void tlb_invalidate_pages(asid_t asid, __address page, count_t cnt)
 {
 
@@ -103 +103 @@
         int b=0;
         int c=cnt;
-        int i;
+
+        __address va;
+        va=page;
 
         rr.word = rr_read(VA2VRN(va));
@@ -133 +135 @@
                 case 1: /*cnt 4-15*/
                 {
-                        cnt=(cnt/4)+1;
+                        /*cnt=((cnt-1)/4)+1;*/
                         ps=PAGE_WIDTH+2;
                         va&=~((1<<ps)-1);
@@ -140 +142 @@
                 case 2: /*cnt 16-63*/
                 {
-                        cnt=(cnt/16)+1;
+                        /*cnt=((cnt-1)/16)+1;*/
                         ps=PAGE_WIDTH+4;
                         va&=~((1<<ps)-1);
@@ -147 +149 @@
                 case 3: /*cnt 64-255*/
                 {
-                        cnt=(cnt/64)+1;
+                        /*cnt=((cnt-1)/64)+1;*/
                         ps=PAGE_WIDTH+6;
                         va&=~((1<<ps)-1);
@@ -154 +156 @@
                 case 4: /*cnt 256-1023*/
                 {
-                        cnt=(cnt/256)+1;
+                        /*cnt=((cnt-1)/256)+1;*/
                         ps=PAGE_WIDTH+8;
                         va&=~((1<<ps)-1);
@@ -161 +163 @@
                 case 5: /*cnt 1024-4095*/
                 {
-                        cnt=(cnt/1024)+1;
+                        /*cnt=((cnt-1)/1024)+1;*/
                         ps=PAGE_WIDTH+10;
                         va&=~((1<<ps)-1);
@@ -168 +170 @@
                 case 6: /*cnt 4096-16383*/
                 {
-                        cnt=(cnt/4096)+1;
+                        /*cnt=((cnt-1)/4096)+1;*/
                         ps=PAGE_WIDTH+12;
                         va&=~((1<<ps)-1);
@@ -176 +178 @@
                 case 8: /*cnt 65536-(256K-1)*/
                 {
-                        cnt=(cnt/16384)+1;
+                        /*cnt=((cnt-1)/16384)+1;*/
                         ps=PAGE_WIDTH+14;
                         va&=~((1<<ps)-1);
@@ -183 +185 @@
                 default:
                 {
-                        cnt=(cnt/(16384*16))+1;
+                        /*cnt=((cnt-1)/(16384*16))+1;*/
                         ps=PAGE_WIDTH+18;
                         va&=~((1<<ps)-1);
                         break;
                 }
-                        
-        }
-        for(i=0;i<cnt;i++)      {
-        __asm__ volatile 
-        (
-                "ptc.l %0,%1;;"
-                :
-                : "r"(va), "r"(ps<<2)
-        );
-        va+=(1<<ps);
+        }
+        /*cnt+=(page!=va);*/
+        for(;va<(page+cnt*(PAGE_SIZE));va+=(1<<ps))     {
+                __asm__ volatile 
+                (
+                        "ptc.l %0,%1;;"
+                        :
+                        : "r"(va), "r"(ps<<2)
+                );
         }
         srlz_d();

test/mm/purge1/test.c

@@ -79 +79 @@
         
 
-        tlb_invalidate_pages(8,0x18000,13);
+        tlb_invalidate_pages(8,0x0c000,14);
         
         /*tlb_invalidate_all();*/