diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2010-05-17 03:00:00 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2010-05-17 03:00:00 -0400 |
| commit | f307333e14f6b18045eb4198fe646d9b6028f3ed (patch) | |
| tree | 71611b08a95f4f07de9b4c19100474188027e62e | |
| parent | 5a58ec8766e0ce98fd585eb404b3e56935afafe6 (diff) | |
ext4: Add new tracepoints to track mballoc's buddy bitmap loads
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/mballoc.c | 2 | ||||
| -rw-r--r-- | include/trace/events/ext4.h | 33 |
2 files changed, 35 insertions, 0 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 0bdc0188e5e2..a93f554b6803 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -890,6 +890,7 @@ static int ext4_mb_init_cache(struct page *page, char *incore) BUG_ON(incore == NULL); mb_debug(1, "put buddy for group %u in page %lu/%x\n", group, page->index, i * blocksize); + trace_ext4_mb_buddy_bitmap_load(sb, group); grinfo = ext4_get_group_info(sb, group); grinfo->bb_fragments = 0; memset(grinfo->bb_counters, 0, @@ -907,6 +908,7 @@ static int ext4_mb_init_cache(struct page *page, char *incore) BUG_ON(incore != NULL); mb_debug(1, "put bitmap for group %u in page %lu/%x\n", group, page->index, i * blocksize); + trace_ext4_mb_bitmap_load(sb, group); /* see comments in ext4_mb_put_pa() */ ext4_lock_group(sb, group); diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h index 2aa6aa3e8f61..99fbf1d0a6b9 100644 --- a/include/trace/events/ext4.h +++ b/include/trace/events/ext4.h @@ -974,6 +974,39 @@ TRACE_EVENT(ext4_da_release_space, __entry->reserved_meta_blocks, __entry->allocated_meta_blocks) ); +DECLARE_EVENT_CLASS(ext4__bitmap_load, + TP_PROTO(struct super_block *sb, unsigned long group), + + TP_ARGS(sb, group), + + TP_STRUCT__entry( + __field( dev_t, dev ) + __field( __u32, group ) + + ), + + TP_fast_assign( + __entry->dev = sb->s_dev; + __entry->group = group; + ), + + TP_printk("dev %s group %u", + jbd2_dev_to_name(__entry->dev), __entry->group) +); + +DEFINE_EVENT(ext4__bitmap_load, ext4_mb_bitmap_load, + + TP_PROTO(struct super_block *sb, unsigned long group), + + TP_ARGS(sb, group) +); + +DEFINE_EVENT(ext4__bitmap_load, ext4_mb_buddy_bitmap_load, + + TP_PROTO(struct super_block *sb, unsigned long group), + + TP_ARGS(sb, group) +); #endif /* _TRACE_EXT4_H */ |