commit 3f7de037fb3727b20bc27332cdcf2488b702394c
author Josef Bacik <josef@redhat.com> Thu Nov 10 08:29:20 2011 -0500
committer Chris Mason <chris.mason@oracle.com> Mon Jan 16 15:29:42 2012 -0500
tree 7e355b7e60b584ca7aaaf7c8abfa1f2408c15ff2
parent 45a8090e626ab470c91142954431a93846030b0d

Btrfs: add allocator tracepoints

I used these tracepoints when figuring out what the cluster stuff was doing, so
add them to mainline in case we need to profile this stuff again.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>

fs/btrfs/extent-tree.c

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index a44072a..ad1a20b 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5256,6 +5256,8 @@
 	ins->objectid = 0;
 	ins->offset = 0;
 
+	trace_find_free_extent(orig_root, num_bytes, empty_size, data);
+
 	space_info = __find_space_info(root->fs_info, data);
 	if (!space_info) {
 		printk(KERN_ERR "No space info for %llu\n", data);
@@ -5432,6 +5434,8 @@
 			if (offset) {
 				/* we have a block, we're done */
 				spin_unlock(&last_ptr->refill_lock);
+				trace_btrfs_reserve_extent_cluster(root,
+					block_group, search_start, num_bytes);
 				goto checks;
 			}
 
@@ -5490,6 +5494,9 @@
 				if (offset) {
 					/* we found one, proceed */
 					spin_unlock(&last_ptr->refill_lock);
+					trace_btrfs_reserve_extent_cluster(root,
+						block_group, search_start,
+						num_bytes);
 					goto checks;
 				}
 			} else if (!cached && loop > LOOP_CACHING_NOWAIT
@@ -5576,6 +5583,8 @@
 		ins->objectid = search_start;
 		ins->offset = num_bytes;
 
+		trace_btrfs_reserve_extent(orig_root, block_group,
+					   search_start, num_bytes);
 		if (offset < search_start)
 			btrfs_add_free_space(used_block_group, offset,
 					     search_start - offset);