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| author | Mandeep Singh Baines <msb@chromium.org> | 2011-03-22 16:34:23 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-22 17:44:13 -0700 |
| commit | 5af5bcb8d37f99ba415a1adc6da71051b84f93a5 (patch) | |
| tree | 58ae14d126ef40cbc5a91538cfe04433d26510ae | |
| parent | 9f36e2c448007b54851e7e4fa48da97d1477a175 (diff) | |
| download | lwn-5af5bcb8d37f99ba415a1adc6da71051b84f93a5.tar.gz lwn-5af5bcb8d37f99ba415a1adc6da71051b84f93a5.zip | |
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 <msb@chromium.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Joe Perches <joe@perches.com>
Cc: Olof Johansson <olofj@chromium.org>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | kernel/printk.c | 2 | ||||
| -rw-r--r-- | lib/Kconfig.debug | 11 |
2 files changed, 12 insertions, 1 deletions
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 |