diff mbox series

[V2,6/6] ceph_debug: Remove now unused dout macro definitions

Message ID fe4e9e2a544af4d00aa5c97d9288d9b4d67db1ed.1597626802.git.joe@perches.com (mailing list archive)
State New, archived
Headers show
Series ceph: Use more generic logging | expand

Commit Message

Joe Perches Aug. 17, 2020, 1:34 a.m. UTC
All the uses have be converted to pr_debug, so remove these.

Signed-off-by: Joe Perches <joe@perches.com>
---
 include/linux/ceph/ceph_debug.h | 30 ------------------------------
 1 file changed, 30 deletions(-)

Comments

Ilya Dryomov Aug. 17, 2020, 9:24 a.m. UTC | #1
On Mon, Aug 17, 2020 at 3:34 AM Joe Perches <joe@perches.com> wrote:
>
> All the uses have be converted to pr_debug, so remove these.
>
> Signed-off-by: Joe Perches <joe@perches.com>
> ---
>  include/linux/ceph/ceph_debug.h | 30 ------------------------------
>  1 file changed, 30 deletions(-)
>
> diff --git a/include/linux/ceph/ceph_debug.h b/include/linux/ceph/ceph_debug.h
> index d5a5da838caf..81c0d7195f1e 100644
> --- a/include/linux/ceph/ceph_debug.h
> +++ b/include/linux/ceph/ceph_debug.h
> @@ -6,34 +6,4 @@
>
>  #include <linux/string.h>
>
> -#ifdef CONFIG_CEPH_LIB_PRETTYDEBUG
> -
> -/*
> - * wrap pr_debug to include a filename:lineno prefix on each line.
> - * this incurs some overhead (kernel size and execution time) due to
> - * the extra function call at each call site.
> - */
> -
> -# if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
> -#  define dout(fmt, ...)                                               \
> -       pr_debug("%.*s %12.12s:%-4d : " fmt,                            \
> -                8 - (int)sizeof(KBUILD_MODNAME), "    ",               \
> -                kbasename(__FILE__), __LINE__, ##__VA_ARGS__)
> -# else
> -/* faux printk call just to see any compiler warnings. */
> -#  define dout(fmt, ...)       do {                            \
> -               if (0)                                          \
> -                       printk(KERN_DEBUG fmt, ##__VA_ARGS__);  \
> -       } while (0)
> -# endif
> -
> -#else
> -
> -/*
> - * or, just wrap pr_debug
> - */
> -# define dout(fmt, ...)        pr_debug(" " fmt, ##__VA_ARGS__)
> -
> -#endif
> -
>  #endif
> --
> 2.26.0
>

Hi Joe,

Yeah, roughly the same thing can be achieved with +flmp instead
of just +p with PRETTYDEBUG, but PRETTYDEBUG formatting actually
predates those flags and some of us still use bash scripts from
back then.  We also have a few guides and blog entries with just
+p, but that's not a big deal.

I'd be fine with removing CONFIG_CEPH_LIB_PRETTYDEBUG since it's
disabled by default and in all major distributions, but I'm not a
fan of a wide-sweeping dout -> pr_debug change.  We do extensive
backporting to older kernels and these kind of changes are rather
annoying.  dout is shorter to type too ;)

I know that in some cases the function names are outdated or
duplicated, but I prefer fixing them gradually, along with actual
code changes in the area (i.e. similar to whitespace).

Thanks,

                Ilya
Joe Perches Aug. 17, 2020, 2:15 p.m. UTC | #2
On Mon, 2020-08-17 at 11:24 +0200, Ilya Dryomov wrote:
> On Mon, Aug 17, 2020 at 3:34 AM Joe Perches <joe@perches.com> wrote:
> > All the uses have be converted to pr_debug, so remove these.
[]
> Hi Joe,

Hi Ilya.

> Yeah, roughly the same thing can be achieved with +flmp instead
> of just +p with PRETTYDEBUG, but PRETTYDEBUG formatting actually
> predates those flags and some of us still use bash scripts from
> back then.  We also have a few guides and blog entries with just
> +p, but that's not a big deal.

btw: I sent a patch adding a +F flag to emit
the kbasename(FILE) to dynamic debug output.

https://lore.kernel.org/lkml/3e4a895e7c25e37c0f4727b960b7abdcf0752cbb.camel@perches.com/
diff mbox series

Patch

diff --git a/include/linux/ceph/ceph_debug.h b/include/linux/ceph/ceph_debug.h
index d5a5da838caf..81c0d7195f1e 100644
--- a/include/linux/ceph/ceph_debug.h
+++ b/include/linux/ceph/ceph_debug.h
@@ -6,34 +6,4 @@ 
 
 #include <linux/string.h>
 
-#ifdef CONFIG_CEPH_LIB_PRETTYDEBUG
-
-/*
- * wrap pr_debug to include a filename:lineno prefix on each line.
- * this incurs some overhead (kernel size and execution time) due to
- * the extra function call at each call site.
- */
-
-# if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
-#  define dout(fmt, ...)						\
-	pr_debug("%.*s %12.12s:%-4d : " fmt,				\
-		 8 - (int)sizeof(KBUILD_MODNAME), "    ",		\
-		 kbasename(__FILE__), __LINE__, ##__VA_ARGS__)
-# else
-/* faux printk call just to see any compiler warnings. */
-#  define dout(fmt, ...)	do {				\
-		if (0)						\
-			printk(KERN_DEBUG fmt, ##__VA_ARGS__);	\
-	} while (0)
-# endif
-
-#else
-
-/*
- * or, just wrap pr_debug
- */
-# define dout(fmt, ...)	pr_debug(" " fmt, ##__VA_ARGS__)
-
-#endif
-
 #endif