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Rev 1224 Rev 1236
Line 942... Line 942...
942 
    return v;
 942 
    return v;
943 
}
 943 
}
944 
 
 944 
 
945 
/** Free a frame.
 945 
/** Free a frame.
946 
 *
 946 
 *
947 
 * Find respective frame structure for supplied addr.
 947 
 * Find respective frame structure for supplied PFN.
948 
 * Decrement frame reference count.
 948 
 * Decrement frame reference count.
949 
 * If it drops to zero, move the frame structure to free list.
 949 
 * If it drops to zero, move the frame structure to free list.
950 
 *
 950 
 *
951 
 * @param frame Frame no to be freed.
 951 
 * @param frame Frame number to be freed.
952 
 */
 952 
 */
953 
void frame_free(pfn_t pfn)
 953 
void frame_free(pfn_t pfn)
954 
{
 954 
{
955 
    ipl_t ipl;
 955 
    ipl_t ipl;
956 
    zone_t *zone;
 956 
    zone_t *zone;
Line 967... Line 967...
967 
   
 967 
   
968 
    spinlock_unlock(&zone->lock);
 968 
    spinlock_unlock(&zone->lock);
969 
    interrupts_restore(ipl);
 969 
    interrupts_restore(ipl);
970 
}
 970 
}
971 
 
 971 
 
- 
 
 972 
/** Add reference to frame.
- 
 
 973 
 *
- 
 
 974 
 * Find respective frame structure for supplied PFN and
- 
 
 975 
 * increment frame reference count.
- 
 
 976 
 *
- 
 
 977 
 * @param frame Frame no to be freed.
- 
 
 978 
 */
- 
 
 979 
void frame_reference_add(pfn_t pfn)
- 
 
 980 
{
- 
 
 981 
    ipl_t ipl;
- 
 
 982 
    zone_t *zone;
- 
 
 983 
    frame_t *frame;
- 
 
 984 
 
- 
 
 985 
    ipl = interrupts_disable();
972 
 
 986 
   
- 
 
 987 
    /*
- 
 
 988 
     * First, find host frame zone for addr.
- 
 
 989 
     */
- 
 
 990 
    zone = find_zone_and_lock(pfn,NULL);
- 
 
 991 
    ASSERT(zone);
- 
 
 992 
   
- 
 
 993 
    frame = &zone->frames[pfn-zone->base];
- 
 
 994 
    frame->refcount++;
- 
 
 995 
   
- 
 
 996 
    spinlock_unlock(&zone->lock);
- 
 
 997 
    interrupts_restore(ipl);
- 
 
 998 
}
973 
 
 999 
 
974 
/** Mark given range unavailable in frame zones */
 1000 
/** Mark given range unavailable in frame zones */
975 
void frame_mark_unavailable(pfn_t start, count_t count)
 1001 
void frame_mark_unavailable(pfn_t start, count_t count)
976 
{
 1002 
{
977 
    int i;
 1003 
    int i;