Commit b3d4c2b1 authored by Tao Ma's avatar Tao Ma Committed by Theodore Ts'o
Browse files

ext4: Add new ext4 trim tracepoints 



Add ext4_trim_extent and ext4_trim_all_free.

Reviewed-by: default avatarLukas Czerner <lczerner@redhat.com>
Signed-off-by: default avatarTao Ma <boyu.mt@taobao.com>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent 169ddc3e

fs/ext4/mballoc.c

+4 −0
Original line number Diff line number Diff line
@@ -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 "

include/trace/events/ext4.h

+49 −0
Original line number Diff line number Diff line
@@ -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 */