From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:8141 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754039AbcCYR0Q (ORCPT ); Fri, 25 Mar 2016 13:26:16 -0400 Received: from pps.filterd (m0089730.ppops.net [127.0.0.1]) by m0089730.ppops.net (8.16.0.11/8.16.0.11) with SMTP id u2PHKiZ7021139 for ; Fri, 25 Mar 2016 10:26:15 -0700 Received: from mail.thefacebook.com ([199.201.64.23]) by m0089730.ppops.net with ESMTP id 21vva22wh8-1 (version=TLSv1 cipher=AES128-SHA bits=128 verify=NOT) for ; Fri, 25 Mar 2016 10:26:15 -0700 From: Josef Bacik To: Subject: [PATCH 06/14] Btrfs: add tracepoint for adding block groups Date: Fri, 25 Mar 2016 13:25:52 -0400 Message-ID: <1458926760-17563-7-git-send-email-jbacik@fb.com> In-Reply-To: <1458926760-17563-1-git-send-email-jbacik@fb.com> References: <1458926760-17563-1-git-send-email-jbacik@fb.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-btrfs-owner@vger.kernel.org List-ID: I'm writing a tool to visualize the enospc system inside btrfs, I need this tracepoint in order to keep track of the block groups in the system. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/extent-tree.c | 2 ++ include/trace/events/btrfs.h | 40 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 42 insertions(+) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 90ac821..0db4319 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -9849,6 +9849,7 @@ int btrfs_read_block_groups(struct btrfs_root *root) goto error; } + trace_btrfs_add_block_group(root->fs_info, cache, 0); ret = update_space_info(info, cache->flags, found_key.offset, btrfs_block_group_used(&cache->item), cache->bytes_super, &space_info); @@ -10019,6 +10020,7 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans, * Now that our block group has its ->space_info set and is inserted in * the rbtree, update the space info's counters. */ + trace_btrfs_add_block_group(root->fs_info, cache, 1); ret = update_space_info(root->fs_info, cache->flags, size, bytes_used, cache->bytes_super, &cache->space_info); if (ret) { diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index d866f21..3e61deb8 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -440,6 +440,46 @@ TRACE_EVENT(btrfs_sync_fs, TP_printk("wait = %d", __entry->wait) ); +TRACE_EVENT(btrfs_add_block_group, + + TP_PROTO(struct btrfs_fs_info *fs_info, + struct btrfs_block_group_cache *block_group, int create), + + TP_ARGS(fs_info, block_group, create), + + TP_STRUCT__entry( + __array( u8, fsid, BTRFS_UUID_SIZE ) + __field( u64, offset ) + __field( u64, size ) + __field( u64, flags ) + __field( u64, bytes_used ) + __field( u64, bytes_super ) + __field( int, create ) + ), + + TP_fast_assign( + memcpy(__entry->fsid, fs_info->fsid, BTRFS_UUID_SIZE); + __entry->offset = block_group->key.objectid; + __entry->size = block_group->key.offset; + __entry->flags = block_group->flags; + __entry->bytes_used = + btrfs_block_group_used(&block_group->item); + __entry->bytes_super = block_group->bytes_super; + __entry->create = create; + ), + + TP_printk("%pU: block_group offset = %llu, size = %llu, " + "flags = %llu(%s), bytes_used = %llu, bytes_super = %llu, " + "create = %d", __entry->fsid, + (unsigned long long)__entry->offset, + (unsigned long long)__entry->size, + (unsigned long long)__entry->flags, + __print_flags((unsigned long)__entry->flags, "|", + BTRFS_GROUP_FLAGS), + (unsigned long long)__entry->bytes_used, + (unsigned long long)__entry->bytes_super, __entry->create) +); + #define show_ref_action(action) \ __print_symbolic(action, \ { BTRFS_ADD_DELAYED_REF, "ADD_DELAYED_REF" }, \ -- 2.5.0