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| author | Kent Overstreet <koverstreet@google.com> | 2013-04-27 02:39:55 +0400 |
|---|---|---|
| committer | Kent Overstreet <koverstreet@google.com> | 2013-06-27 04:09:15 +0400 |
| commit | c37511b863f36c1cc6e18440717fd4cc0e881b8a (patch) | |
| tree | 64d82c648bd092f38c35c4b808411bc1cdb3a9f0 /drivers/md/bcache/request.h | |
| parent | 5794351146199b9ac67a5ab1beab82be8bfd7b5d (diff) | |
| download | linux-c37511b863f36c1cc6e18440717fd4cc0e881b8a.tar.xz | |
bcache: Fix/revamp tracepoints
The tracepoints were reworked to be more sensible, and fixed a null
pointer deref in one of the tracepoints.
Converted some of the pr_debug()s to tracepoints - this is partly a
performance optimization; it used to be that with DEBUG or
CONFIG_DYNAMIC_DEBUG pr_debug() was an empty macro; but at some point it
was changed to an empty inline function.
Some of the pr_debug() statements had rather expensive function calls as
part of the arguments, so this code was getting run unnecessarily even
on non debug kernels - in some fast paths, too.
Signed-off-by: Kent Overstreet <koverstreet@google.com>
Diffstat (limited to 'drivers/md/bcache/request.h')
| -rw-r--r-- | drivers/md/bcache/request.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/bcache/request.h b/drivers/md/bcache/request.h index 254d9ab5707c..57dc4784f4f4 100644 --- a/drivers/md/bcache/request.h +++ b/drivers/md/bcache/request.h @@ -30,7 +30,7 @@ struct search { }; void bch_cache_read_endio(struct bio *, int); -int bch_get_congested(struct cache_set *); +unsigned bch_get_congested(struct cache_set *); void bch_insert_data(struct closure *cl); void bch_btree_insert_async(struct closure *); void bch_cache_read_endio(struct bio *, int); |