Messages in this thread Patch in this message | | | Date | Thu, 14 Sep 2006 22:48:06 +0100 | From | Alasdair G Kergon <> | Subject | [PATCH 16/25] dm: add debug macro |
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From: Bryn Reeves <breeves@redhat.com>
Add CONFIG_DM_DEBUG and DMDEBUG() macro.
Signed-off-by: Bryn Reeves <breeves@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Index: linux-2.6.18-rc7/drivers/md/Kconfig =================================================================== --- linux-2.6.18-rc7.orig/drivers/md/Kconfig 2006-09-14 20:20:55.000000000 +0100 +++ linux-2.6.18-rc7/drivers/md/Kconfig 2006-09-14 21:00:46.000000000 +0100 @@ -199,6 +199,14 @@ 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 Index: linux-2.6.18-rc7/drivers/md/dm.h =================================================================== --- linux-2.6.18-rc7.orig/drivers/md/dm.h 2006-09-14 20:20:55.000000000 +0100 +++ linux-2.6.18-rc7/drivers/md/dm.h 2006-09-14 21:00:46.000000000 +0100 @@ -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)) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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