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Commit 5af5bcb8 authored by Mandeep Singh Baines's avatar Mandeep Singh Baines Committed by Linus Torvalds
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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: default avatarMandeep 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 9f36e2c4

kernel/printk.c

+1 −1
Original line number Diff line number Diff line
@@ -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 */

lib/Kconfig.debug

+11 −0
Original line number Diff line number Diff line
@@ -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