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authorZhao Qiang <qiang.zhao@freescale.com>2015-11-30 10:48:53 +0800
committerScott Wood <scottwood@freescale.com>2015-12-22 17:10:17 -0600
commitb26981c8f743d3cb64a6907eb1f5c6c4ba6ca672 (patch)
tree60c2eb0964020d0ffe5fbe51f68d9bc03d89655c /include/linux/genalloc.h
parentde2dd0eb30af55d3893979d5641c50c7a8969c99 (diff)
downloadop-kernel-dev-b26981c8f743d3cb64a6907eb1f5c6c4ba6ca672.zip
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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>
Diffstat (limited to 'include/linux/genalloc.h')
-rw-r--r--include/linux/genalloc.h11
1 files changed, 11 insertions, 0 deletions
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 @@ struct genpool_data_align {
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 @@ extern unsigned long gen_pool_first_fit(unsigned long *map, unsigned long size,
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);
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