diff options
| author | Kent Overstreet <koverstreet@google.com> | 2013-04-27 00:39:55 +0200 |
|---|---|---|
| committer | Kent Overstreet <koverstreet@google.com> | 2013-06-27 02:09:15 +0200 |
| commit | c37511b863f36c1cc6e18440717fd4cc0e881b8a (patch) | |
| tree | 64d82c648bd092f38c35c4b808411bc1cdb3a9f0 /drivers/md/bcache/bset.h | |
| parent | bcache: Refactor btree io (diff) | |
| download | linux-c37511b863f36c1cc6e18440717fd4cc0e881b8a.tar.xz linux-c37511b863f36c1cc6e18440717fd4cc0e881b8a.zip | |
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/bset.h')
| -rw-r--r-- | drivers/md/bcache/bset.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/bcache/bset.h b/drivers/md/bcache/bset.h index 57a9cff41546..ae115a253d73 100644 --- a/drivers/md/bcache/bset.h +++ b/drivers/md/bcache/bset.h @@ -1,6 +1,8 @@ #ifndef _BCACHE_BSET_H #define _BCACHE_BSET_H +#include <linux/slab.h> + /* * BKEYS: * @@ -142,6 +144,8 @@ /* Btree key comparison/iteration */ +#define MAX_BSETS 4U + struct btree_iter { size_t size, used; struct btree_iter_set { |