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ext4: Add new ext4 trim tracepoints

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Add ext4_trim_extent and ext4_trim_all_free.

Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Tao Ma 2011-07-11 00:01:52 -04:00 committed by Theodore Ts'o
parent 169ddc3ec8
commit b3d4c2b10b
2 changed files with 53 additions and 0 deletions
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4
fs/ext4/mballoc.c
View file

@ -4780,6 +4780,8 @@ static void ext4_trim_extent(struct super_block *sb, int start, int count,
{
struct ext4_free_extent ex;
trace_ext4_trim_extent(sb, group, start, count);
assert_spin_locked(ext4_group_lock_ptr(sb, group));
ex.fe_start = start;
@ -4825,6 +4827,8 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group,
struct ext4_buddy e4b;
int ret;
trace_ext4_trim_all_free(sb, group, start, max);
ret = ext4_mb_load_buddy(sb, group, &e4b);
if (ret) {
ext4_error(sb, "Error in loading buddy "

49
include/trace/events/ext4.h
View file

@ -1542,6 +1542,55 @@ TRACE_EVENT(ext4_journal_start,
__entry->nblocks, (void *)__entry->ip)
);
DECLARE_EVENT_CLASS(ext4__trim,
TP_PROTO(struct super_block *sb,
ext4_group_t group,
ext4_grpblk_t start,
ext4_grpblk_t len),
TP_ARGS(sb, group, start, len),
TP_STRUCT__entry(
__field( int, dev_major )
__field( int, dev_minor )
__field( __u32, group )
__field( int, start )
__field( int, len )
),
TP_fast_assign(
__entry->dev_major = MAJOR(sb->s_dev);
__entry->dev_minor = MINOR(sb->s_dev);
__entry->group = group;
__entry->start = start;
__entry->len = len;
),
TP_printk("dev %d,%d group %u, start %d, len %d",
__entry->dev_major, __entry->dev_minor,
__entry->group, __entry->start, __entry->len)
);
DEFINE_EVENT(ext4__trim, ext4_trim_extent,
TP_PROTO(struct super_block *sb,
ext4_group_t group,
ext4_grpblk_t start,
ext4_grpblk_t len),
TP_ARGS(sb, group, start, len)
);
DEFINE_EVENT(ext4__trim, ext4_trim_all_free,
TP_PROTO(struct super_block *sb,
ext4_group_t group,
ext4_grpblk_t start,
ext4_grpblk_t len),
TP_ARGS(sb, group, start, len)
);
#endif /* _TRACE_EXT4_H */
/* This part must be outside protection */