Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
index 5bbebda..3bc7dd7 100644
--- a/include/linux/genalloc.h
+++ b/include/linux/genalloc.h
@@ -8,31 +8,35 @@
* Version 2. See the file COPYING for more details.
*/
-
#ifndef __GENALLOC_H__
#define __GENALLOC_H__
-/*
- * General purpose special memory pool descriptor.
- */
-struct gen_pool {
- rwlock_t lock;
- struct list_head chunks; /* list of chunks in this pool */
- int min_alloc_order; /* minimum allocation order */
-};
-/*
- * General purpose special memory pool chunk descriptor.
- */
-struct gen_pool_chunk {
- spinlock_t lock;
- struct list_head next_chunk; /* next chunk in pool */
- phys_addr_t phys_addr; /* physical starting address of memory chunk */
- unsigned long start_addr; /* starting address of memory chunk */
- unsigned long end_addr; /* ending address of memory chunk */
- unsigned long bits[0]; /* bitmap for allocating memory chunk */
-};
+struct gen_pool;
-extern struct gen_pool *gen_pool_create(int, int);
+struct gen_pool *__must_check gen_pool_create(unsigned order, int nid);
+
+void gen_pool_destroy(struct gen_pool *pool);
+
+unsigned long __must_check
+gen_pool_alloc_aligned(struct gen_pool *pool, size_t size,
+ unsigned alignment_order);
+
+/**
+ * gen_pool_alloc() - allocate special memory from the pool
+ * @pool: Pool to allocate from.
+ * @size: Number of bytes to allocate from the pool.
+ *
+ * Allocate the requested number of bytes from the specified pool.
+ * Uses a first-fit algorithm.
+ */
+static inline unsigned long __must_check
+gen_pool_alloc(struct gen_pool *pool, size_t size)
+{
+ return gen_pool_alloc_aligned(pool, size, 0);
+}
+
+void gen_pool_free(struct gen_pool *pool, unsigned long addr, size_t size);
+
extern phys_addr_t gen_pool_virt_to_phys(struct gen_pool *pool, unsigned long);
extern int gen_pool_add_virt(struct gen_pool *, unsigned long, phys_addr_t,
size_t, int);
@@ -48,12 +52,9 @@
*
* Returns 0 on success or a -ve errno on failure.
*/
-static inline int gen_pool_add(struct gen_pool *pool, unsigned long addr,
+static inline int __must_check gen_pool_add(struct gen_pool *pool, unsigned long addr,
size_t size, int nid)
{
return gen_pool_add_virt(pool, addr, -1, size, nid);
}
-extern void gen_pool_destroy(struct gen_pool *);
-extern unsigned long gen_pool_alloc(struct gen_pool *, size_t);
-extern void gen_pool_free(struct gen_pool *, unsigned long, size_t);
#endif /* __GENALLOC_H__ */