From 3f7de037fb3727b20bc27332cdcf2488b702394c Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Thu, 10 Nov 2011 08:29:20 -0500 Subject: 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 --- fs/btrfs/extent-tree.c | 9 +++++++++ fs/btrfs/free-space-cache.c | 12 +++++++++++- 2 files changed, 20 insertions(+), 1 deletion(-) (limited to 'fs') 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); diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 6c7887a7770..efe20032e4a 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -2346,6 +2346,8 @@ again: &entry->offset_index, 1); BUG_ON(ret); + trace_btrfs_setup_cluster(block_group, cluster, + total_found * block_group->sectorsize, 1); return 0; } @@ -2368,6 +2370,7 @@ setup_cluster_no_bitmap(struct btrfs_block_group_cache *block_group, u64 window_start; u64 window_free; u64 max_extent; + u64 total_size = 0; entry = tree_search_offset(ctl, offset, 0, 1); if (!entry) @@ -2433,11 +2436,12 @@ setup_cluster_no_bitmap(struct btrfs_block_group_cache *block_group, rb_erase(&entry->offset_index, &ctl->free_space_offset); ret = tree_insert_offset(&cluster->root, entry->offset, &entry->offset_index, 0); + total_size += entry->bytes; BUG_ON(ret); } while (node && entry != last); cluster->max_size = max_extent; - + trace_btrfs_setup_cluster(block_group, cluster, total_size, 0); return 0; } @@ -2542,6 +2546,10 @@ int btrfs_find_space_cluster(struct btrfs_trans_handle *trans, goto out; } + trace_btrfs_find_cluster(block_group, offset, bytes, empty_size, + min_bytes); + + INIT_LIST_HEAD(&bitmaps); ret = setup_cluster_no_bitmap(block_group, cluster, &bitmaps, offset, bytes + empty_size, cont1_bytes, min_bytes); @@ -2559,6 +2567,8 @@ int btrfs_find_space_cluster(struct btrfs_trans_handle *trans, list_add_tail(&cluster->block_group_list, &block_group->cluster_list); cluster->block_group = block_group; + } else { + trace_btrfs_failed_cluster_setup(block_group); } out: spin_unlock(&cluster->lock); -- cgit v1.2.3