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[PATCH] dm: add debug macro 

Add CONFIG_DM_DEBUG and DMDEBUG() macro.

Signed-off-by: Bryn Reeves <breeves@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Bryn Reeves 2006-10-03 01:15:35 -07:00 committed by Linus Torvalds
parent 8560ed6fa8
commit cc1092019c
2 changed files with 13 additions and 0 deletions
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8
drivers/md/Kconfig
View File

@ -201,6 +201,14 @@ config BLK_DEV_DM
If unsure, say N.
config DM_DEBUG
boolean "Device mapper debugging support"
depends on BLK_DEV_DM && EXPERIMENTAL
---help---
Enable this for messages that may help debug device-mapper problems.
If unsure, say N.
config DM_CRYPT
tristate "Crypt target support"
depends on BLK_DEV_DM && EXPERIMENTAL

5
drivers/md/dm.h
View File

@ -21,6 +21,11 @@
#define DMERR(f, arg...) printk(KERN_ERR DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg)
#define DMWARN(f, arg...) printk(KERN_WARNING DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg)
#define DMINFO(f, arg...) printk(KERN_INFO DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg)
#ifdef CONFIG_DM_DEBUG
# define DMDEBUG(f, arg...) printk(KERN_DEBUG DM_NAME ": " DM_MSG_PREFIX " DEBUG: " f "\n", ## arg)
#else
# define DMDEBUG(f, arg...) do {} while (0)
#endif
#define DMEMIT(x...) sz += ((sz >= maxlen) ? \
0 : scnprintf(result + sz, maxlen - sz, x))