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| author |  Kent Overstreet <kmo@daterainc.com>
| 2013-10-31 15:43:22 -0700 |
|---|---|---|
| committer | Kent Overstreet <kmo@daterainc.com>
| 2013-11-10 21:56:41 -0800 |
| commit | 48a915a87f0bd98c3d68d029acf223a2e5116f07 (patch) | |
| tree | d821604169acc801b655b04c1de1cc5672169ec4 /include/trace/events/bcache.h | |
| parent | bcache: Have btree_split() insert into parent directly (diff) | |
| download | linux-48a915a87f0bd98c3d68d029acf223a2e5116f07.tar.gz linux-48a915a87f0bd98c3d68d029acf223a2e5116f07.tar.bz2 linux-48a915a87f0bd98c3d68d029acf223a2e5116f07.zip | |
bcache: Better full stripe scanning
The old scanning-by-stripe code burned too much CPU, this should be
better.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Diffstat (limited to 'include/trace/events/bcache.h')
| -rw-r--r-- | include/trace/events/bcache.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/trace/events/bcache.h b/include/trace/events/bcache.h index 32c89b33c391..e2b9576d00e2 100644 --- a/include/trace/events/bcache.h +++ b/include/trace/events/bcache.h @@ -368,6 +368,35 @@ DEFINE_EVENT(btree_node, bcache_btree_set_root, TP_ARGS(b) ); +TRACE_EVENT(bcache_keyscan, + TP_PROTO(unsigned nr_found, + unsigned start_inode, uint64_t start_offset, + unsigned end_inode, uint64_t end_offset), + TP_ARGS(nr_found, + start_inode, start_offset, + end_inode, end_offset), + + TP_STRUCT__entry( + __field(__u32, nr_found ) + __field(__u32, start_inode ) + __field(__u64, start_offset ) + __field(__u32, end_inode ) + __field(__u64, end_offset ) + ), + + TP_fast_assign( + __entry->nr_found = nr_found; + __entry->start_inode = start_inode; + __entry->start_offset = start_offset; + __entry->end_inode = end_inode; + __entry->end_offset = end_offset; + ), + + TP_printk("found %u keys from %u:%llu to %u:%llu", __entry->nr_found, + __entry->start_inode, __entry->start_offset, + __entry->end_inode, __entry->end_offset) +); + /* Allocator */ TRACE_EVENT(bcache_alloc_invalidate, |