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authorJosef Bacik <josef@redhat.com>2011-11-10 08:29:20 -0500
committerChris Mason <chris.mason@oracle.com>2012-01-16 15:29:42 -0500
commit3f7de037fb3727b20bc27332cdcf2488b702394c (patch)
tree7e355b7e60b584ca7aaaf7c8abfa1f2408c15ff2 /fs/btrfs/extent-tree.c
parent45a8090e626ab470c91142954431a93846030b0d (diff)
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>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index a44072a692a..ad1a20bc834 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5256,6 +5256,8 @@ static noinline int find_free_extent(struct btrfs_trans_handle *trans,
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 @@ alloc:
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 @@ refill_cluster:
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 @@ checks:
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);