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Commit ccf0f32a authored by Theodore Ts'o's avatar Theodore Ts'o
Browse files

ext4: add tracepoints for shutdown and file system errors 



Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
parent 7928b2cb

fs/ext4/ioctl.c

+1 −0
Original line number Diff line number Diff line
@@ -481,6 +481,7 @@ static int ext4_shutdown(struct super_block *sb, unsigned long arg) 
		return 0;



	ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags);

	trace_ext4_shutdown(sb, flags);



	switch (flags) {

	case EXT4_GOING_FLAGS_DEFAULT:

fs/ext4/super.c

+4 −0
Original line number Diff line number Diff line
@@ -448,6 +448,7 @@ void __ext4_error(struct super_block *sb, const char *function, 
	if (unlikely(ext4_forced_shutdown(EXT4_SB(sb))))

		return;



	trace_ext4_error(sb, function, line);

	if (ext4_error_ratelimit(sb)) {

		va_start(args, fmt);

		vaf.fmt = fmt;
@@ -472,6 +473,7 @@ void __ext4_error_inode(struct inode *inode, const char *function, 
	if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))

		return;



	trace_ext4_error(inode->i_sb, function, line);

	es->s_last_error_ino = cpu_to_le32(inode->i_ino);

	es->s_last_error_block = cpu_to_le64(block);

	if (ext4_error_ratelimit(inode->i_sb)) {
@@ -507,6 +509,7 @@ void __ext4_error_file(struct file *file, const char *function, 
	if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))

		return;



	trace_ext4_error(inode->i_sb, function, line);

	es = EXT4_SB(inode->i_sb)->s_es;

	es->s_last_error_ino = cpu_to_le32(inode->i_ino);

	if (ext4_error_ratelimit(inode->i_sb)) {
@@ -719,6 +722,7 @@ __acquires(bitlock) 
	if (unlikely(ext4_forced_shutdown(EXT4_SB(sb))))

		return;



	trace_ext4_error(sb, function, line);

	es->s_last_error_ino = cpu_to_le32(ino);

	es->s_last_error_block = cpu_to_le64(block);

	__save_error_info(sb, function, line);

include/trace/events/ext4.h

+43 −0
Original line number Diff line number Diff line
@@ -2585,6 +2585,49 @@ DEFINE_GETFSMAP_EVENT(ext4_getfsmap_low_key); 
DEFINE_GETFSMAP_EVENT(ext4_getfsmap_high_key);

DEFINE_GETFSMAP_EVENT(ext4_getfsmap_mapping);



TRACE_EVENT(ext4_shutdown,

	TP_PROTO(struct super_block *sb, unsigned long flags),



	TP_ARGS(sb, flags),



	TP_STRUCT__entry(

		__field(	dev_t,	dev			)

		__field(     unsigned,	flags			)

	),



	TP_fast_assign(

		__entry->dev	= sb->s_dev;

		__entry->flags	= flags;

	),



	TP_printk("dev %d,%d flags %u",

		  MAJOR(__entry->dev), MINOR(__entry->dev),

		  __entry->flags)

);



TRACE_EVENT(ext4_error,

	TP_PROTO(struct super_block *sb, const char *function,

		 unsigned int line),



	TP_ARGS(sb, function, line),



	TP_STRUCT__entry(

		__field(	dev_t,	dev			)

		__field( const char *,	function		)

		__field(     unsigned,	line			)

	),



	TP_fast_assign(

		__entry->dev	= sb->s_dev;

		__entry->function = function;

		__entry->line	= line;

	),



	TP_printk("dev %d,%d function %s line %u",

		  MAJOR(__entry->dev), MINOR(__entry->dev),

		  __entry->function, __entry->line)

);



#endif /* _TRACE_EXT4_H */



/* This part must be outside protection */