ext4: add tracepoint for ext4_journal_start (12706394) · Commits · 戴 / test

fs/ext4/super.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -269,6 +269,7 @@ handle_t ext4_journal_start_sb(struct super_block sb, int nblocks)
		journal_t *journal;
		handle_t *handle;

		trace_ext4_journal_start(sb, nblocks, _RET_IP_);
		if (sb->s_flags & MS_RDONLY)
		return ERR_PTR(-EROFS);

+22 −0

Original line number	Diff line number	Diff line
		@@ -1520,6 +1520,28 @@ TRACE_EVENT(ext4_load_inode,
		(unsigned long) __entry->ino)
		);

		TRACE_EVENT(ext4_journal_start,
		TP_PROTO(struct super_block *sb, int nblocks, unsigned long IP),

		TP_ARGS(sb, nblocks, IP),

		TP_STRUCT__entry(
		__field( dev_t, dev )
		__field( int, nblocks )
		__field(unsigned long, ip )
		),

		TP_fast_assign(
		__entry->dev = sb->s_dev;
		__entry->nblocks = nblocks;
		__entry->ip = IP;
		),

		TP_printk("dev %d,%d nblocks %d caller %pF",
		MAJOR(__entry->dev), MINOR(__entry->dev),
		__entry->nblocks, (void *)__entry->ip)
		);

		#endif /* _TRACE_EXT4_H */

		/* This part must be outside protection */