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| author | Brian Foster <bfoster@redhat.com> | 2019-10-13 17:10:33 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-10-21 09:04:58 -0700 |
| commit | 396bbf3c657e540162b7297e426e5939c2909854 (patch) | |
| tree | a43a7d5cbd91f334c1d45820a3cff2157ae5dee7 /fs/xfs/xfs_trace.h | |
| parent | c62321a2a0ea3c53ab7a41cf4d4071ee37bcc2c0 (diff) | |
| download | linux-stable-396bbf3c657e540162b7297e426e5939c2909854.tar.gz linux-stable-396bbf3c657e540162b7297e426e5939c2909854.tar.bz2 linux-stable-396bbf3c657e540162b7297e426e5939c2909854.zip | |
xfs: refactor cntbt lastblock scan best extent logic into helper
The cntbt lastblock scan checks the size, alignment, locality, etc.
of each free extent in the block and compares it with the current
best candidate. This logic will be reused by the upcoming optimized
cntbt algorithm, so refactor it into a separate helper. Note that
acur->diff is now initialized to -1 (unsigned) instead of 0 to
support the more granular comparison logic in the new helper.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/xfs_trace.h')
| -rw-r--r-- | fs/xfs/xfs_trace.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index cbb23d7a3554..61b53a30f8f2 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -1598,6 +1598,32 @@ DEFINE_ALLOC_EVENT(xfs_alloc_vextent_noagbp); DEFINE_ALLOC_EVENT(xfs_alloc_vextent_loopfailed); DEFINE_ALLOC_EVENT(xfs_alloc_vextent_allfailed); +TRACE_EVENT(xfs_alloc_cur_check, + TP_PROTO(struct xfs_mount *mp, xfs_btnum_t btnum, xfs_agblock_t bno, + xfs_extlen_t len, xfs_extlen_t diff, bool new), + TP_ARGS(mp, btnum, bno, len, diff, new), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_btnum_t, btnum) + __field(xfs_agblock_t, bno) + __field(xfs_extlen_t, len) + __field(xfs_extlen_t, diff) + __field(bool, new) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->btnum = btnum; + __entry->bno = bno; + __entry->len = len; + __entry->diff = diff; + __entry->new = new; + ), + TP_printk("dev %d:%d btree %s bno 0x%x len 0x%x diff 0x%x new %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS), + __entry->bno, __entry->len, __entry->diff, __entry->new) +) + DECLARE_EVENT_CLASS(xfs_da_class, TP_PROTO(struct xfs_da_args *args), TP_ARGS(args), |