linux-kernel - [PATCH] Make DEBUG take precedence over DYNAMIC_PRINTK

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Message-ID: <20081204135113.6d91efb3@gondolin>
Date:	Thu, 4 Dec 2008 13:51:13 +0100
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Jason Baron <jbaron@...hat.com>, Greg K-H <greg@...ah.com>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] Make DEBUG take precedence over DYNAMIC_PRINTK_DEBUG.

Statically defined DEBUG should take precedence over
dynamically enabled debugging; otherwise adding DEBUG
(like, for example, via CONFIG_DEBUG_KOBJECT) does not
have the expected result of printing pr_debug() messages
unconditionally.

Signed-off-by: Cornelia Huck <cornelia.huck@...ibm.com>
---
 include/linux/kernel.h |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- linux-2.6.orig/include/linux/kernel.h
+++ linux-2.6/include/linux/kernel.h
@@ -338,13 +338,13 @@ static inline char *pack_hex_byte(char *
         printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)

 /* If you are writing a driver, please use dev_dbg instead */
-#if defined(CONFIG_DYNAMIC_PRINTK_DEBUG)
+#if defined(DEBUG)
+#define pr_debug(fmt, ...) \
+	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
+#elif defined(CONFIG_DYNAMIC_PRINTK_DEBUG)
 #define pr_debug(fmt, ...) do { \
 	dynamic_pr_debug(pr_fmt(fmt), ##__VA_ARGS__); \
 	} while (0)
-#elif defined(DEBUG)
-#define pr_debug(fmt, ...) \
-	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
 #else
 #define pr_debug(fmt, ...) \
 	({ if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); 0; })
--
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