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ext4: add new trace event in ext4_fc_cleanup

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This adds a new trace event in ext4_fc_cleanup() which is helpful in debugging
some fast_commit issues.

Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/794cdb1d5d3622f3f80d30c222ff6652ea68c375.1647057583.git.riteshh@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ritesh Harjani 2022-03-12 11:09:51 +05:30 committed by Theodore Ts'o
parent 78be0471da
commit 08f4c42aba
2 changed files with 27 additions and 0 deletions
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1
fs/ext4/fast_commit.c
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@ -1280,6 +1280,7 @@ static void ext4_fc_cleanup(journal_t *journal, int full, tid_t tid)
if (full && sbi->s_fc_bh)
sbi->s_fc_bh = NULL;
trace_ext4_fc_cleanup(journal, full, tid);
jbd2_fc_release_bufs(journal);
spin_lock(&sbi->s_fc_lock);

26
include/trace/events/ext4.h
View File

@ -2863,6 +2863,32 @@ TRACE_EVENT(ext4_fc_track_range,
__entry->end)
);
TRACE_EVENT(ext4_fc_cleanup,
TP_PROTO(journal_t *journal, int full, tid_t tid),
TP_ARGS(journal, full, tid),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, j_fc_off)
__field(int, full)
__field(tid_t, tid)
),
TP_fast_assign(
struct super_block *sb = journal->j_private;
__entry->dev = sb->s_dev;
__entry->j_fc_off = journal->j_fc_off;
__entry->full = full;
__entry->tid = tid;
),
TP_printk("dev %d,%d, j_fc_off %d, full %d, tid %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->j_fc_off, __entry->full, __entry->tid)
);
TRACE_EVENT(ext4_update_sb,
TP_PROTO(struct super_block *sb, ext4_fsblk_t fsblk,
unsigned int flags),