Merge branch 'dde' into upstream-merged

1 files changed, 36 insertions, 0 deletions

diff --git a/libdde_linux26/contrib/include/linux/genalloc.h b/libdde_linux26/contrib/include/linux/genalloc.h
new file mode 100644
index 00000000..9869ef36
--- /dev/null
+++ b/libdde_linux26/contrib/include/linux/genalloc.h
@@ -0,0 +1,36 @@
+/*
+ * Basic general purpose allocator for managing special purpose memory
+ * not managed by the regular kmalloc/kfree interface.
+ * Uses for this includes on-device special memory, uncached memory
+ * etc.
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2.  See the file COPYING for more details.
+ */
+
+
+/*
+ *  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 */
+	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 */
+};
+
+extern struct gen_pool *gen_pool_create(int, int);
+extern int gen_pool_add(struct gen_pool *, unsigned long, size_t, int);
+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);