diff options
author | Steve Wise <swise@opengridcomputing.com> | 2006-10-02 05:17:00 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-02 10:57:12 -0400 |
commit | 322acc96d4bd3debea11cd0160b18bd5d7ff0d73 (patch) | |
tree | 230e9c35e0ce4dac5bd1a49085152624045fb616 /lib | |
parent | d834c16516d1ebec4766fc58c059bf01311e6045 (diff) |
[PATCH] LIB: add gen_pool_destroy()
Modules using the genpool allocator need to be able to destroy the data
structure when unloading.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Dean Nelson <dcn@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'lib')
-rw-r--r-- | lib/genalloc.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/genalloc.c b/lib/genalloc.c index 71338b48e88..7d16ecabba9 100644 --- a/lib/genalloc.c +++ b/lib/genalloc.c | |||
@@ -71,6 +71,36 @@ EXPORT_SYMBOL(gen_pool_add); | |||
71 | 71 | ||
72 | 72 | ||
73 | /* | 73 | /* |
74 | * Destroy a memory pool. Verifies that there are no outstanding allocations. | ||
75 | * | ||
76 | * @pool: pool to destroy | ||
77 | */ | ||
78 | void gen_pool_destroy(struct gen_pool *pool) | ||
79 | { | ||
80 | struct list_head *_chunk, *_next_chunk; | ||
81 | struct gen_pool_chunk *chunk; | ||
82 | int order = pool->min_alloc_order; | ||
83 | int bit, end_bit; | ||
84 | |||
85 | |||
86 | write_lock(&pool->lock); | ||
87 | list_for_each_safe(_chunk, _next_chunk, &pool->chunks) { | ||
88 | chunk = list_entry(_chunk, struct gen_pool_chunk, next_chunk); | ||
89 | list_del(&chunk->next_chunk); | ||
90 | |||
91 | end_bit = (chunk->end_addr - chunk->start_addr) >> order; | ||
92 | bit = find_next_bit(chunk->bits, end_bit, 0); | ||
93 | BUG_ON(bit < end_bit); | ||
94 | |||
95 | kfree(chunk); | ||
96 | } | ||
97 | kfree(pool); | ||
98 | return; | ||
99 | } | ||
100 | EXPORT_SYMBOL(gen_pool_destroy); | ||
101 | |||
102 | |||
103 | /* | ||
74 | * Allocate the requested number of bytes from the specified pool. | 104 | * Allocate the requested number of bytes from the specified pool. |
75 | * Uses a first-fit algorithm. | 105 | * Uses a first-fit algorithm. |
76 | * | 106 | * |