Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1 | #include <linux/ceph/ceph_debug.h> |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 2 | |
| 3 | #include <linux/err.h> |
| 4 | #include <linux/sched.h> |
| 5 | #include <linux/types.h> |
| 6 | #include <linux/vmalloc.h> |
| 7 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 8 | #include <linux/ceph/msgpool.h> |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 9 | |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 10 | static void *msgpool_alloc(gfp_t gfp_mask, void *arg) |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 11 | { |
Sage Weil | d52f847 | 2010-04-01 15:23:14 -0700 | [diff] [blame] | 12 | struct ceph_msgpool *pool = arg; |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 13 | struct ceph_msg *msg; |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 14 | |
Sage Weil | b61c276 | 2011-08-09 15:03:46 -0700 | [diff] [blame^] | 15 | msg = ceph_msg_new(0, pool->front_len, gfp_mask, true); |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 16 | if (!msg) { |
| 17 | dout("msgpool_alloc %s failed\n", pool->name); |
| 18 | } else { |
| 19 | dout("msgpool_alloc %s %p\n", pool->name, msg); |
| 20 | msg->pool = pool; |
| 21 | } |
| 22 | return msg; |
Sage Weil | d52f847 | 2010-04-01 15:23:14 -0700 | [diff] [blame] | 23 | } |
| 24 | |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 25 | static void msgpool_free(void *element, void *arg) |
Sage Weil | d52f847 | 2010-04-01 15:23:14 -0700 | [diff] [blame] | 26 | { |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 27 | struct ceph_msgpool *pool = arg; |
| 28 | struct ceph_msg *msg = element; |
| 29 | |
| 30 | dout("msgpool_release %s %p\n", pool->name, msg); |
| 31 | msg->pool = NULL; |
| 32 | ceph_msg_put(msg); |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 33 | } |
| 34 | |
| 35 | int ceph_msgpool_init(struct ceph_msgpool *pool, |
Sage Weil | 4f48280 | 2010-04-24 09:56:35 -0700 | [diff] [blame] | 36 | int front_len, int size, bool blocking, const char *name) |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 37 | { |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 38 | dout("msgpool %s init\n", name); |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 39 | pool->front_len = front_len; |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 40 | pool->pool = mempool_create(size, msgpool_alloc, msgpool_free, pool); |
Sage Weil | d52f847 | 2010-04-01 15:23:14 -0700 | [diff] [blame] | 41 | if (!pool->pool) |
| 42 | return -ENOMEM; |
Sage Weil | 4f48280 | 2010-04-24 09:56:35 -0700 | [diff] [blame] | 43 | pool->name = name; |
Sage Weil | d52f847 | 2010-04-01 15:23:14 -0700 | [diff] [blame] | 44 | return 0; |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 45 | } |
| 46 | |
| 47 | void ceph_msgpool_destroy(struct ceph_msgpool *pool) |
| 48 | { |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 49 | dout("msgpool %s destroy\n", pool->name); |
Sage Weil | d52f847 | 2010-04-01 15:23:14 -0700 | [diff] [blame] | 50 | mempool_destroy(pool->pool); |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 51 | } |
| 52 | |
Sage Weil | d52f847 | 2010-04-01 15:23:14 -0700 | [diff] [blame] | 53 | struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *pool, |
| 54 | int front_len) |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 55 | { |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 56 | struct ceph_msg *msg; |
| 57 | |
Sage Weil | d52f847 | 2010-04-01 15:23:14 -0700 | [diff] [blame] | 58 | if (front_len > pool->front_len) { |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 59 | dout("msgpool_get %s need front %d, pool size is %d\n", |
Sage Weil | 4f48280 | 2010-04-24 09:56:35 -0700 | [diff] [blame] | 60 | pool->name, front_len, pool->front_len); |
Sage Weil | 8f3bc05 | 2009-10-14 17:36:07 -0700 | [diff] [blame] | 61 | WARN_ON(1); |
| 62 | |
| 63 | /* try to alloc a fresh message */ |
Sage Weil | b61c276 | 2011-08-09 15:03:46 -0700 | [diff] [blame^] | 64 | return ceph_msg_new(0, front_len, GFP_NOFS, false); |
Sage Weil | 8f3bc05 | 2009-10-14 17:36:07 -0700 | [diff] [blame] | 65 | } |
| 66 | |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 67 | msg = mempool_alloc(pool->pool, GFP_NOFS); |
| 68 | dout("msgpool_get %s %p\n", pool->name, msg); |
| 69 | return msg; |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | void ceph_msgpool_put(struct ceph_msgpool *pool, struct ceph_msg *msg) |
| 73 | { |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 74 | dout("msgpool_put %s %p\n", pool->name, msg); |
| 75 | |
Sage Weil | d52f847 | 2010-04-01 15:23:14 -0700 | [diff] [blame] | 76 | /* reset msg front_len; user may have changed it */ |
| 77 | msg->front.iov_len = pool->front_len; |
| 78 | msg->hdr.front_len = cpu_to_le32(pool->front_len); |
Sage Weil | 3ca02ef | 2010-03-01 15:25:00 -0800 | [diff] [blame] | 79 | |
Sage Weil | d52f847 | 2010-04-01 15:23:14 -0700 | [diff] [blame] | 80 | kref_init(&msg->kref); /* retake single ref */ |
Sage Weil | 5185352 | 2011-08-09 14:48:11 -0700 | [diff] [blame] | 81 | mempool_free(msg, pool->pool); |
Sage Weil | 8fc91fd | 2009-10-06 11:31:13 -0700 | [diff] [blame] | 82 | } |