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authorKent Overstreet <koverstreet@google.com>2013-04-26 15:39:55 -0700
committerKent Overstreet <koverstreet@google.com>2013-06-26 17:09:15 -0700
commitc37511b863f36c1cc6e18440717fd4cc0e881b8a (patch)
tree64d82c648bd092f38c35c4b808411bc1cdb3a9f0 /drivers/md/bcache/request.h
parent5794351146199b9ac67a5ab1beab82be8bfd7b5d (diff)
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.h2
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);