genalloc:support allocating specific region
Add new algo for genalloc, it reserve a specific region of
memory
Signed-off-by: Zhao Qiang <qiang.zhao@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
index 3c676ce..29d4385 100644
--- a/include/linux/genalloc.h
+++ b/include/linux/genalloc.h
@@ -84,6 +84,13 @@
int align; /* alignment by bytes for starting address */
};
+/*
+ * gen_pool data descriptor for gen_pool_fixed_alloc.
+ */
+struct genpool_data_fixed {
+ unsigned long offset; /* The offset of the specific region */
+};
+
extern struct gen_pool *gen_pool_create(int, int);
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,
@@ -124,6 +131,10 @@
unsigned long start, unsigned int nr, void *data,
struct gen_pool *pool);
+extern unsigned long gen_pool_fixed_alloc(unsigned long *map,
+ unsigned long size, unsigned long start, unsigned int nr,
+ void *data, struct gen_pool *pool);
+
extern unsigned long gen_pool_first_fit_align(unsigned long *map,
unsigned long size, unsigned long start, unsigned int nr,
void *data, struct gen_pool *pool);