Changeset 4841104 in mainline for src/mm/frame.c

Timestamp:

2005-09-23T20:44:35Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

adecf496

Parents:

23443b2

Message:

Physical memory management work.
Add "attribute ((packed))" to frame_t so that it takes up less space.
Note that this is essential as there is lot of these structures.
Remove busy list from zone_t as it is redundant.

File:

• src/mm/frame.c (modified) (5 diffs)

src/mm/frame.c

@@ -116 +116 @@
         frame->refcount++;
         list_remove(tmp);                       /* remove frame from free_head */
-        list_append(tmp, &zone->busy_head);     /* append frame to busy_head */
         zone->free_count--;
         zone->busy_count++;
@@ -181 +180 @@
 
         if (!--frame->refcount) {
-                list_remove(&frame->link);                      /* remove frame from busy_head */
                 list_append(&frame->link, &zone->free_head);    /* append frame to free_head */
                 zone->free_count++;
@@ -196 +194 @@
  *
  * Find respective frame structrue for supplied addr.
- * Increment frame reference count and move the frame structure to busy list.
+ * Increment frame reference count and remove the frame structure from free list.
  *
  * @param addr Address of the frame to be marked. It must be a multiple of FRAME_SIZE.
@@ -242 +240 @@
 
                 list_remove(&frame->link);                      /* remove frame from free_head */
-                list_append(&frame->link, &zone->busy_head);    /* append frame to busy_head */
                 zone->free_count--;
                 zone->busy_count++;
@@ -314 +311 @@
 
                 z->busy_count = 0;
-                list_initialize(&z->busy_head);
                 
                 z->frames = (frame_t *) malloc(cnt * sizeof(frame_t));