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| author | Christoph Hellwig <hch@infradead.org> | 2010-06-24 11:50:22 +1000 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2010-07-26 13:16:43 -0500 |
| commit | d2e078c33c24f97411b0fdd7cd2173e68125e7e3 (patch) | |
| tree | 596dafaa5f9f6336a62350a889926184a93a3850 | |
| parent | 807cbbdb438d172b87b380eebc1f1c1a5a3549b2 (diff) | |
| download | blackbird-op-linux-d2e078c33c24f97411b0fdd7cd2173e68125e7e3.tar.gz blackbird-op-linux-d2e078c33c24f97411b0fdd7cd2173e68125e7e3.zip | |
xfs: some iget tracing cleanups / fixes
The xfs_iget_alloc/found tracepoints are a bit misnamed and misplaced.
Rename them to xfs_iget_hit/xfs_iget_miss and move them to the beggining
of the xfs_iget_cache_hit/miss functions. Add a new xfs_iget_reclaim_fail
tracepoint for the case where we fail to re-initialize a VFS inode,
and add a second instance of the xfs_iget_skip tracepoint for the case
of a failed igrab() call.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_trace.h | 5 | ||||
| -rw-r--r-- | fs/xfs/xfs_iget.c | 8 |
2 files changed, 7 insertions, 6 deletions
diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h index 3f2eec28c70d..9efe368d38c7 100644 --- a/fs/xfs/linux-2.6/xfs_trace.h +++ b/fs/xfs/linux-2.6/xfs_trace.h @@ -561,8 +561,9 @@ DEFINE_EVENT(xfs_iget_class, name, \ TP_ARGS(ip)) DEFINE_IGET_EVENT(xfs_iget_skip); DEFINE_IGET_EVENT(xfs_iget_reclaim); -DEFINE_IGET_EVENT(xfs_iget_found); -DEFINE_IGET_EVENT(xfs_iget_alloc); +DEFINE_IGET_EVENT(xfs_iget_reclaim_fail); +DEFINE_IGET_EVENT(xfs_iget_hit); +DEFINE_IGET_EVENT(xfs_iget_miss); DECLARE_EVENT_CLASS(xfs_inode_class, TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c index 633cb331b9e9..75664d1b9f59 100644 --- a/fs/xfs/xfs_iget.c +++ b/fs/xfs/xfs_iget.c @@ -208,7 +208,7 @@ xfs_iget_cache_hit( ip->i_flags &= ~XFS_INEW; ip->i_flags |= XFS_IRECLAIMABLE; __xfs_inode_set_reclaim_tag(pag, ip); - trace_xfs_iget_reclaim(ip); + trace_xfs_iget_reclaim_fail(ip); goto out_error; } @@ -223,6 +223,7 @@ xfs_iget_cache_hit( } else { /* If the VFS inode is being torn down, pause and try again. */ if (!igrab(inode)) { + trace_xfs_iget_skip(ip); error = EAGAIN; goto out_error; } @@ -230,6 +231,7 @@ xfs_iget_cache_hit( /* We've got a live one. */ spin_unlock(&ip->i_flags_lock); read_unlock(&pag->pag_ici_lock); + trace_xfs_iget_hit(ip); } if (lock_flags != 0) @@ -238,7 +240,6 @@ xfs_iget_cache_hit( xfs_iflags_clear(ip, XFS_ISTALE); XFS_STATS_INC(xs_ig_found); - trace_xfs_iget_found(ip); return 0; out_error: @@ -271,7 +272,7 @@ xfs_iget_cache_miss( if (error) goto out_destroy; - xfs_itrace_entry(ip); + trace_xfs_iget_miss(ip); if ((ip->i_d.di_mode == 0) && !(flags & XFS_IGET_CREATE)) { error = ENOENT; @@ -317,7 +318,6 @@ xfs_iget_cache_miss( write_unlock(&pag->pag_ici_lock); radix_tree_preload_end(); - trace_xfs_iget_alloc(ip); *ipp = ip; return 0; |
