Changeset c5396c1 in mainline for kernel/arch/ia64/src

Timestamp:

2013-09-12T10:27:17Z (12 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

6e75f2d

Parents:

4a5f2b0

Message:

abandon the 2nd level bitmap
according to observations it is very rare to have allocation requests for more than 8 frames, therefore the conservative update of the 2nd level bitmap can hardly provide any benefits
the natural blocking of the bitmap (by bytes) should provide a reasonable performance

File:

• kernel/arch/ia64/src/ddi/ddi.c (modified) (1 diff)

kernel/arch/ia64/src/ddi/ddi.c

@@ -60 +60 @@
                         return ENOMEM;
                 
-                void *store = malloc(bitmap_size(IO_MEMMAP_PAGES, 0), 0);
+                void *store = malloc(bitmap_size(IO_MEMMAP_PAGES), 0);
                 if (store == NULL)
                         return ENOMEM;
                 
-                bitmap_initialize(task->arch.iomap, IO_MEMMAP_PAGES, 0, store);
+                bitmap_initialize(task->arch.iomap, IO_MEMMAP_PAGES, store);
                 bitmap_clear_range(task->arch.iomap, 0, IO_MEMMAP_PAGES);
         }