From 5af5bcb8d37f99ba415a1adc6da71051b84f93a5 Mon Sep 17 00:00:00 2001 From: Mandeep Singh Baines Date: Tue, 22 Mar 2011 16:34:23 -0700 Subject: [PATCH] printk: allow setting DEFAULT_MESSAGE_LEVEL via Kconfig We've been burned by regressions/bugs which we later realized could have been triaged quicker if only we'd paid closer attention to dmesg. To make it easier to audit dmesg, we'd like to make DEFAULT_MESSAGE_LEVEL Kconfig-settable. That way we can set it to KERN_NOTICE and audit any messages <= KERN_WARNING. Signed-off-by: Mandeep Singh Baines Cc: Ingo Molnar Cc: Joe Perches Cc: Olof Johansson Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/printk.c | 2 +- lib/Kconfig.debug | 11 +++++++++++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/kernel/printk.c b/kernel/printk.c index a53607eea6d0..da8ca817eae3 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -53,7 +53,7 @@ void asmlinkage __attribute__((weak)) early_printk(const char *fmt, ...) #define __LOG_BUF_LEN (1 << CONFIG_LOG_BUF_SHIFT) /* printk's without a loglevel use this.. */ -#define DEFAULT_MESSAGE_LOGLEVEL 4 /* KERN_WARNING */ +#define DEFAULT_MESSAGE_LOGLEVEL CONFIG_DEFAULT_MESSAGE_LOGLEVEL /* We show everything that is MORE important than this.. */ #define MINIMUM_CONSOLE_LOGLEVEL 1 /* Minimum loglevel we let people use */ diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index fb0afeff9436..bef5faab660f 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -9,6 +9,17 @@ config PRINTK_TIME operations. This is useful for identifying long delays in kernel startup. +config DEFAULT_MESSAGE_LOGLEVEL + int "Default message log level (1-7)" + range 1 7 + default "4" + help + Default log level for printk statements with no specified priority. + + This was hard-coded to KERN_WARNING since at least 2.6.10 but folks + that are auditing their logs closely may want to set it to a lower + priority. + config ENABLE_WARN_DEPRECATED bool "Enable __deprecated logic" default y -- 2.30.2