[PATCH] Cleanup bootmem allocator and fix alloc_bootmem_low

Patch cleans up the alloc_bootmem fix for swiotlb.  Patch removes
alloc_bootmem_*_limit api and fixes alloc_boot_*low api to do the right
thing -- allocate from low32 memory.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 12 insertions, 34 deletions

diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index 3b03b0b868dd..993da8cc9706 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -43,50 +43,38 @@ typedef struct bootmem_data {
 extern unsigned long __init bootmem_bootmap_pages (unsigned long);
 extern unsigned long __init init_bootmem (unsigned long addr, unsigned long memend);
 extern void __init free_bootmem (unsigned long addr, unsigned long size);
-extern void * __init __alloc_bootmem_limit (unsigned long size, unsigned long align, unsigned long goal, unsigned long limit);
+extern void * __init __alloc_bootmem (unsigned long size, unsigned long align, unsigned long goal);
+extern void * __init __alloc_bootmem_low(unsigned long size,
+                                         unsigned long align,
+                                         unsigned long goal);
+extern void * __init __alloc_bootmem_low_node(pg_data_t *pgdat,
+                                              unsigned long size,
+                                              unsigned long align,
+                                              unsigned long goal);
 #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
 extern void __init reserve_bootmem (unsigned long addr, unsigned long size);
 #define alloc_bootmem(x) \
         __alloc_bootmem((x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
 #define alloc_bootmem_low(x) \
-        __alloc_bootmem((x), SMP_CACHE_BYTES, 0)
+        __alloc_bootmem_low((x), SMP_CACHE_BYTES, 0)
 #define alloc_bootmem_pages(x) \
         __alloc_bootmem((x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
 #define alloc_bootmem_low_pages(x) \
-        __alloc_bootmem((x), PAGE_SIZE, 0)
-
-#define alloc_bootmem_limit(x, limit)                                           \
-        __alloc_bootmem_limit((x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS), (limit))
-#define alloc_bootmem_low_limit(x, limit)                       \
-        __alloc_bootmem_limit((x), SMP_CACHE_BYTES, 0, (limit))
-#define alloc_bootmem_pages_limit(x, limit)                                     \
-        __alloc_bootmem_limit((x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS), (limit))
-#define alloc_bootmem_low_pages_limit(x, limit)         \
-        __alloc_bootmem_limit((x), PAGE_SIZE, 0, (limit))
-
+        __alloc_bootmem_low((x), PAGE_SIZE, 0)
 #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
 extern unsigned long __init free_all_bootmem (void);
-
+extern void * __init __alloc_bootmem_node (pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal);
 extern unsigned long __init init_bootmem_node (pg_data_t *pgdat, unsigned long freepfn, unsigned long startpfn, unsigned long endpfn);
 extern void __init reserve_bootmem_node (pg_data_t *pgdat, unsigned long physaddr, unsigned long size);
 extern void __init free_bootmem_node (pg_data_t *pgdat, unsigned long addr, unsigned long size);
 extern unsigned long __init free_all_bootmem_node (pg_data_t *pgdat);
-extern void * __init __alloc_bootmem_node_limit (pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal, unsigned long limit);
 #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
 #define alloc_bootmem_node(pgdat, x) \
         __alloc_bootmem_node((pgdat), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
 #define alloc_bootmem_pages_node(pgdat, x) \
         __alloc_bootmem_node((pgdat), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
 #define alloc_bootmem_low_pages_node(pgdat, x) \
-        __alloc_bootmem_node((pgdat), (x), PAGE_SIZE, 0)
-
-#define alloc_bootmem_node_limit(pgdat, x, limit)                               \
-        __alloc_bootmem_node_limit((pgdat), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS), (limit))
-#define alloc_bootmem_pages_node_limit(pgdat, x, limit)                         \
-        __alloc_bootmem_node_limit((pgdat), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS), (limit))
-#define alloc_bootmem_low_pages_node_limit(pgdat, x, limit)             \
-        __alloc_bootmem_node_limit((pgdat), (x), PAGE_SIZE, 0, (limit))
-
+        __alloc_bootmem_low_node((pgdat), (x), PAGE_SIZE, 0)
 #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
 
 #ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
@@ -123,15 +111,5 @@ extern void *__init alloc_large_system_hash(const char *tablename,
 #endif
 extern int __initdata hashdist;         /* Distribute hashes across NUMA nodes? */
 
-static inline void *__alloc_bootmem (unsigned long size, unsigned long align, unsigned long goal)
-{
-        return __alloc_bootmem_limit(size, align, goal, 0);
-}
-
-static inline void *__alloc_bootmem_node (pg_data_t *pgdat, unsigned long size, unsigned long align,
-                                     unsigned long goal)
-{
-        return __alloc_bootmem_node_limit(pgdat, size, align, goal, 0);
-}
 
 #endif /* _LINUX_BOOTMEM_H */