The patch titled
dev_vdbg(), available with -DVERBOSE_DEBUG (docs)
has been removed from the -mm tree. Its filename was
dev_vdbg-available-with-dverbose_debug-docs.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: dev_vdbg(), available with -DVERBOSE_DEBUG (docs)
From: David Brownell <david-b@xxxxxxxxxxx>
Update CodingStyle to talk about "-DDEBUG" message conventions and the
new "-DVERBOSE_DEBUG" convention.
Signed-off-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/CodingStyle | 20 ++++++++++++++++++--
1 files changed, 18 insertions(+), 2 deletions(-)
diff -puN Documentation/CodingStyle~dev_vdbg-available-with-dverbose_debug-docs Documentation/CodingStyle
--- a/Documentation/CodingStyle~dev_vdbg-available-with-dverbose_debug-docs
+++ a/Documentation/CodingStyle
@@ -633,12 +633,27 @@ covers RTL which is used frequently with
Kernel developers like to be seen as literate. Do mind the spelling
of kernel messages to make a good impression. Do not use crippled
-words like "dont" and use "do not" or "don't" instead.
+words like "dont"; use "do not" or "don't" instead. Make the messages
+concise, clear, and unambiguous.
Kernel messages do not have to be terminated with a period.
Printing numbers in parentheses (%d) adds no value and should be avoided.
+There are a number of driver model diagnostic macros in <linux/device.h>
+which you should use to make sure messages are matched to the right device
+and driver, and are tagged with the right level: dev_err(), dev_warn(),
+dev_info(), and so forth. For messages that aren't associated with a
+particular device, <linux/kernel.h> defines pr_debug() and pr_info().
+
+Coming up with good debugging messages can be quite a challenge; and once
+you have them, they can be a huge help for remote troubleshooting. Such
+messages should be compiled out when the DEBUG symbol is not defined (that
+is, by default they are not included). When you use dev_dbg() or pr_debug(),
+that's automatic. Many subsystems have Kconfig options to turn on -DDEBUG.
+A related convention uses VERBOSE_DEBUG to add dev_vdbg() messages to the
+ones already enabled by DEBUG.
+
Chapter 14: Allocating memory
@@ -790,4 +805,5 @@ Kernel CodingStyle, by greg@xxxxxxxxx at
http://www.kroah.com/linux/talks/ols_2002_kernel_codingstyle_talk/html/
--
-Last updated on 2006-December-06.
+Last updated on 2007-July-13.
+
_
Patches currently in -mm which might be from david-b@xxxxxxxxxxx are
origin.patch
git-leds.patch
git-mmc.patch
git-mtd.patch
git-backlight.patch
acpi-add-acpi_pm_device_sleep_state-helper-routine.patch
drivers-pmc-msp71xx-gpio-char-driver.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
