diff options
| author | Josef Bacik <josef@toxicpanda.com> | 2021-07-14 14:47:19 -0400 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2021-08-23 13:19:06 +0200 |
| commit | fcdef39c03c5beb2a7bcb627addb0b259b9c5164 (patch) | |
| tree | e1d5dcb07ee1b0bd8805275f9e07e7033febc087 | |
| parent | 8197766d806f02d69d2f54563e0b4672bddcc535 (diff) | |
btrfs: enable a tracepoint when we fail tickets
When debugging early enospc problems it was useful to have a tracepoint
where we failed all tickets so I could check the state of the enospc
counters at failure time to validate my fixes. This adds the tracpoint
so you can easily get that information.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/space-info.c | 2 | ||||
| -rw-r--r-- | include/trace/events/btrfs.h | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c index f79bf85f2439..fbd492fe87f9 100644 --- a/fs/btrfs/space-info.c +++ b/fs/btrfs/space-info.c @@ -824,6 +824,8 @@ static bool maybe_fail_all_tickets(struct btrfs_fs_info *fs_info, struct reserve_ticket *ticket; u64 tickets_id = space_info->tickets_id; + trace_btrfs_fail_all_tickets(fs_info, space_info); + if (btrfs_test_opt(fs_info, ENOSPC_DEBUG)) { btrfs_info(fs_info, "cannot satisfy tickets, dumping space info"); __btrfs_dump_space_info(fs_info, space_info); diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index 97e16a34405b..c7d19eadecc5 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -2104,6 +2104,12 @@ DEFINE_EVENT(btrfs_dump_space_info, btrfs_done_preemptive_reclaim, TP_ARGS(fs_info, sinfo) ); +DEFINE_EVENT(btrfs_dump_space_info, btrfs_fail_all_tickets, + TP_PROTO(struct btrfs_fs_info *fs_info, + const struct btrfs_space_info *sinfo), + TP_ARGS(fs_info, sinfo) +); + TRACE_EVENT(btrfs_reserve_ticket, TP_PROTO(const struct btrfs_fs_info *fs_info, u64 flags, u64 bytes, u64 start_ns, int flush, int error), |