Modules using the genpool allocator need to be able to destroy the data
structure when unloading.
Signed-off-by: Steve Wise <[email protected]>
---
include/linux/genalloc.h | 1 +
lib/genalloc.c | 22 ++++++++++++++++++++++
2 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
index 690c428..ca2b119 100644
--- a/include/linux/genalloc.h
+++ b/include/linux/genalloc.h
@@ -30,6 +30,7 @@ struct gen_pool_chunk {
};
extern struct gen_pool *gen_pool_create(int, int);
+extern void gen_pool_destroy(struct gen_pool *);
extern int gen_pool_add(struct gen_pool *, unsigned long, size_t, int);
extern unsigned long gen_pool_alloc(struct gen_pool *, size_t);
extern void gen_pool_free(struct gen_pool *, unsigned long, size_t);
diff --git a/lib/genalloc.c b/lib/genalloc.c
index 71338b4..c8afa10 100644
--- a/lib/genalloc.c
+++ b/lib/genalloc.c
@@ -36,6 +36,28 @@ EXPORT_SYMBOL(gen_pool_create);
/*
+ * Destroy a memory pool. Assumes the user deals with releasing the
+ * actual memory managed by the pool.
+ *
+ * @pool: pool to destroy.
+ *
+ */
+void gen_pool_destroy(struct gen_pool *pool)
+{
+ struct list_head *_chunk, *next;
+ struct gen_pool_chunk *chunk;
+
+ list_for_each_safe(_chunk, next, &pool->chunks) {
+ chunk = list_entry(_chunk, struct gen_pool_chunk, next_chunk);
+ kfree(chunk);
+ }
+ kfree(pool);
+ return;
+}
+EXPORT_SYMBOL(gen_pool_destroy);
+
+
+/*
* Add a new chunk of memory to the specified pool.
*
* @pool: pool to add new memory chunk to
-
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