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jbd2: remove jbd2_dev_to_name() from jbd2 tracepoints

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Using function calls in TP_printk causes perf heartburn, so print the
MAJOR/MINOR device numbers instead.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o
2011-07-10 22:05:08 -04:00
parent 575a1d4bdf
commit 4862fd6047
3 changed files with 19 additions and 90 deletions
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include/trace/events/jbd2.h
+19 -17
View File
@@ -26,8 +26,8 @@ TRACE_EVENT(jbd2_checkpoint,
__entry->result = result;
),
TP_printk("dev %s result %d",
jbd2_dev_to_name(__entry->dev), __entry->result)
TP_printk("dev %d,%d result %d",
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->result)
);
DECLARE_EVENT_CLASS(jbd2_commit,
@@ -48,9 +48,9 @@ DECLARE_EVENT_CLASS(jbd2_commit,
__entry->transaction = commit_transaction->t_tid;
),
TP_printk("dev %s transaction %d sync %d",
jbd2_dev_to_name(__entry->dev), __entry->transaction,
__entry->sync_commit)
TP_printk("dev %d,%d transaction %d sync %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->transaction, __entry->sync_commit)
);
DEFINE_EVENT(jbd2_commit, jbd2_start_commit,
@@ -100,9 +100,9 @@ TRACE_EVENT(jbd2_end_commit,
__entry->head = journal->j_tail_sequence;
),
TP_printk("dev %s transaction %d sync %d head %d",
jbd2_dev_to_name(__entry->dev), __entry->transaction,
__entry->sync_commit, __entry->head)
TP_printk("dev %d,%d transaction %d sync %d head %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->transaction, __entry->sync_commit, __entry->head)
);
TRACE_EVENT(jbd2_submit_inode_data,
@@ -120,8 +120,9 @@ TRACE_EVENT(jbd2_submit_inode_data,
__entry->ino = inode->i_ino;
),
TP_printk("dev %s ino %lu",
jbd2_dev_to_name(__entry->dev), (unsigned long) __entry->ino)
TP_printk("dev %d,%d ino %lu",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long) __entry->ino)
);
TRACE_EVENT(jbd2_run_stats,
@@ -156,9 +157,9 @@ TRACE_EVENT(jbd2_run_stats,
__entry->blocks_logged = stats->rs_blocks_logged;
),
TP_printk("dev %s tid %lu wait %u running %u locked %u flushing %u "
TP_printk("dev %d,%d tid %lu wait %u running %u locked %u flushing %u "
"logging %u handle_count %u blocks %u blocks_logged %u",
jbd2_dev_to_name(__entry->dev), __entry->tid,
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->tid,
jiffies_to_msecs(__entry->wait),
jiffies_to_msecs(__entry->running),
jiffies_to_msecs(__entry->locked),
@@ -192,9 +193,9 @@ TRACE_EVENT(jbd2_checkpoint_stats,
__entry->dropped = stats->cs_dropped;
),
TP_printk("dev %s tid %lu chp_time %u forced_to_close %u "
TP_printk("dev %d,%d tid %lu chp_time %u forced_to_close %u "
"written %u dropped %u",
jbd2_dev_to_name(__entry->dev), __entry->tid,
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->tid,
jiffies_to_msecs(__entry->chp_time),
__entry->forced_to_close, __entry->written, __entry->dropped)
);
@@ -222,9 +223,10 @@ TRACE_EVENT(jbd2_cleanup_journal_tail,
__entry->freed = freed;
),
TP_printk("dev %s from %u to %u offset %lu freed %lu",
jbd2_dev_to_name(__entry->dev), __entry->tail_sequence,
__entry->first_tid, __entry->block_nr, __entry->freed)
TP_printk("dev %d,%d from %u to %u offset %lu freed %lu",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->tail_sequence, __entry->first_tid,
__entry->block_nr, __entry->freed)
);
#endif /* _TRACE_JBD2_H */