libqos: Split apart pc_alloc_init

Move the list-specific initialization over into
malloc.c, to keep all of the list implementation
details within the same file.

The allocation and freeing of these structures are
now both back within the same layer.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1421698563-6977-2-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

tests/libqos/malloc-pc.c

@@ -32,31 +32,19 @@ void pc_alloc_uninit(QGuestAllocator *allocator)
 
 QGuestAllocator *pc_alloc_init_flags(QAllocOpts flags)
 {
-    QGuestAllocator *s = g_malloc0(sizeof(*s));
+    QGuestAllocator *s;
     uint64_t ram_size;
     QFWCFG *fw_cfg = pc_fw_cfg_init();
-    MemBlock *node;
+
+    ram_size = qfw_cfg_get_u64(fw_cfg, FW_CFG_RAM_SIZE);
+    s = alloc_init(1 << 20, MIN(ram_size, 0xE0000000));
 
     s->opts = flags;
     s->page_size = PAGE_SIZE;
 
-    ram_size = qfw_cfg_get_u64(fw_cfg, FW_CFG_RAM_SIZE);
-
-    /* Start at 1MB */
-    s->start = 1 << 20;
-
-    /* Respect PCI hole */
-    s->end = MIN(ram_size, 0xE0000000);
-
     /* clean-up */
     g_free(fw_cfg);
 
-    QTAILQ_INIT(&s->used);
-    QTAILQ_INIT(&s->free);
-
-    node = mlist_new(s->start, s->end - s->start);
-    QTAILQ_INSERT_HEAD(&s->free, node, MLIST_ENTNAME);
-
     return s;
 }
 

tests/libqos/malloc.c

@@ -268,3 +268,20 @@ void guest_free(QGuestAllocator *allocator, uint64_t addr)
         mlist_check(allocator);
     }
 }
+
+QGuestAllocator *alloc_init(uint64_t start, uint64_t end)
+{
+    QGuestAllocator *s = g_malloc0(sizeof(*s));
+    MemBlock *node;
+
+    s->start = start;
+    s->end = end;
+
+    QTAILQ_INIT(&s->used);
+    QTAILQ_INIT(&s->free);
+
+    node = mlist_new(s->start, s->end - s->start);
+    QTAILQ_INSERT_HEAD(&s->free, node, MLIST_ENTNAME);
+
+    return s;
+}

tests/libqos/malloc.h

@@ -50,4 +50,5 @@ void alloc_uninit(QGuestAllocator *allocator);
 uint64_t guest_alloc(QGuestAllocator *allocator, size_t size);
 void guest_free(QGuestAllocator *allocator, uint64_t addr);
 
+QGuestAllocator *alloc_init(uint64_t start, uint64_t end);
 #endif