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-rw-r--r--include/linux/jbd2.h6
-rw-r--r--include/trace/events/jbd2.h168
2 files changed, 174 insertions, 0 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index cc02393bfce8..d97eb652d6ca 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -1315,6 +1315,12 @@ extern int jbd_blocks_per_page(struct inode *inode);
#define BUFFER_TRACE2(bh, bh2, info) do {} while (0)
#define JBUFFER_TRACE(jh, info) do {} while (0)
+/*
+ * jbd2_dev_to_name is a utility function used by the jbd2 and ext4
+ * tracing infrastructure to map a dev_t to a device name.
+ */
+extern const char *jbd2_dev_to_name(dev_t device);
+
#endif /* __KERNEL__ */
#endif /* _LINUX_JBD2_H */
diff --git a/include/trace/events/jbd2.h b/include/trace/events/jbd2.h
new file mode 100644
index 000000000000..845b0b4b48fd
--- /dev/null
+++ b/include/trace/events/jbd2.h
@@ -0,0 +1,168 @@
+#if !defined(_TRACE_JBD2_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_JBD2_H
+
+#include <linux/jbd2.h>
+#include <linux/tracepoint.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM jbd2
+
+TRACE_EVENT(jbd2_checkpoint,
+
+ TP_PROTO(journal_t *journal, int result),
+
+ TP_ARGS(journal, result),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( int, result )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = journal->j_fs_dev->bd_dev;
+ __entry->result = result;
+ ),
+
+ TP_printk("dev %s result %d",
+ jbd2_dev_to_name(__entry->dev), __entry->result)
+);
+
+TRACE_EVENT(jbd2_start_commit,
+
+ TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
+
+ TP_ARGS(journal, commit_transaction),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( char, sync_commit )
+ __field( int, transaction )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = journal->j_fs_dev->bd_dev;
+ __entry->sync_commit = commit_transaction->t_synchronous_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)
+);
+
+TRACE_EVENT(jbd2_commit_locking,
+
+ TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
+
+ TP_ARGS(journal, commit_transaction),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( char, sync_commit )
+ __field( int, transaction )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = journal->j_fs_dev->bd_dev;
+ __entry->sync_commit = commit_transaction->t_synchronous_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)
+);
+
+TRACE_EVENT(jbd2_commit_flushing,
+
+ TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
+
+ TP_ARGS(journal, commit_transaction),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( char, sync_commit )
+ __field( int, transaction )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = journal->j_fs_dev->bd_dev;
+ __entry->sync_commit = commit_transaction->t_synchronous_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)
+);
+
+TRACE_EVENT(jbd2_commit_logging,
+
+ TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
+
+ TP_ARGS(journal, commit_transaction),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( char, sync_commit )
+ __field( int, transaction )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = journal->j_fs_dev->bd_dev;
+ __entry->sync_commit = commit_transaction->t_synchronous_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)
+);
+
+TRACE_EVENT(jbd2_end_commit,
+ TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
+
+ TP_ARGS(journal, commit_transaction),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( char, sync_commit )
+ __field( int, transaction )
+ __field( int, head )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = journal->j_fs_dev->bd_dev;
+ __entry->sync_commit = commit_transaction->t_synchronous_commit;
+ __entry->transaction = commit_transaction->t_tid;
+ __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)
+);
+
+TRACE_EVENT(jbd2_submit_inode_data,
+ TP_PROTO(struct inode *inode),
+
+ TP_ARGS(inode),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( ino_t, ino )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ ),
+
+ TP_printk("dev %s ino %lu",
+ jbd2_dev_to_name(__entry->dev), __entry->ino)
+);
+
+#endif /* _TRACE_JBD2_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>