Introduce a config option which allows to selectively compile out printk messages based on a specified verbosity level. Signed-off-by: Marc Andre Tanner <mat@xxxxxxxxxxxxxx> --- init/Kconfig | 29 +++++++++++++++++++++++++++++ 1 files changed, 29 insertions(+), 0 deletions(-) diff --git a/init/Kconfig b/init/Kconfig index 3f7e609..549ed95 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -833,6 +833,35 @@ config PRINTK very difficult to diagnose system problems, saying N here is strongly discouraged. +config PRINTK_VERBOSITY + int "Printk compile time verbosity" + depends on EMBEDDED && PRINTK + range 0 7 + default 0 + help + + Select the maximum printk verbosity level to be compiled into + the kernel. + + Messages above the specified verbosity level are removed from + the kernel at compile time. This reduces the kernel image size + at the cost of a calmer kernel. + + Possible verbosity levels are listed below. Note that messages + without an explicit loglevel will be classified as KERN_WARNING. + + 0 Disable this feature and compile all messages in. + + 1 KERN_ALERT /* action must be taken immediately */ + 2 KERN_CRIT /* critical conditions */ + 3 KERN_ERR /* error conditions */ + 4 KERN_WARNING /* warning conditions */ + 5 KERN_NOTICE /* normal but significant condition */ + 6 KERN_INFO /* informational */ + 7 KERN_DEBUG /* debug-level messages */ + + If unsure, just move on and leave this option alone. + config BUG bool "BUG() support" if EMBEDDED default y -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
