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ext4: add tracepoints for shutdown and file system errors

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Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2018-02-18 20:53:23 -05:00
parent 7928b2cbe5
commit ccf0f32acd
3 changed files with 48 additions and 0 deletions
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1
fs/ext4/ioctl.c
View File

@ -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:

4
fs/ext4/super.c
View File

@ -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);

43
include/trace/events/ext4.h
View File

@ -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 */