diff options
| author | Nikhilesh Reddy <reddyn@codeaurora.org> | 2016-10-24 16:31:44 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2017-01-04 16:58:34 -0800 |
| commit | 0c079cd9d1e8092e9a123952c54517b648c1458b (patch) | |
| tree | 6837ceb47a5fcba48dde2e267a7249e5b0d51f3a /include/linux | |
| parent | 8bb66a7e413624884e697d295b7e136f96209cd9 (diff) | |
Block: Add support to measure bio latencies
Add support to measure bio latencies as seen by
upper layers.
Change-Id: I9bfa84d2b57aa9b41d3be08744cb4cb327680ab4
Signed-off-by: Nikhilesh Reddy <reddyn@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/blk_types.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index da8ca5a7da58..6d73a04d0150 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -39,6 +39,15 @@ struct bvec_iter { current bvec */ }; +#ifdef CONFIG_BLOCK_PERF_FRAMEWORK +/* Double declaration from ktime.h so as to not break the include dependency + * chain. Should be kept up to date. + */ +union blk_ktime { + s64 tv64; +}; +#endif + /* * main unit of I/O for the block layer and lower layers (ie drivers and * stacking drivers) @@ -54,6 +63,10 @@ struct bio { struct bvec_iter bi_iter; +#ifdef CONFIG_BLOCK_PERF_FRAMEWORK + union blk_ktime submit_time; + unsigned int blk_sector_count; +#endif /* Number of segments in this BIO after * physical address coalescing is performed. */ |