Commit cc109201 authored by Bryn Reeves's avatar Bryn Reeves Committed by Linus Torvalds
Browse files

[PATCH] dm: add debug macro 



Add CONFIG_DM_DEBUG and DMDEBUG() macro.

Signed-off-by: default avatarBryn Reeves <breeves@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 8560ed6f

drivers/md/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -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

drivers/md/dm.h

+5 −0
Original line number Diff line number Diff line
@@ -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))

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