On Wed, Sep 02, 2009 at 06:44:06PM +0200, Marco Stornelli wrote:
> Marc Andre Tanner ha scritto:
> > Introduce a config option which allows to selectively compile out
> > printk messages based on a specified verbosity level.
> >
> > Signed-off-by: Marc Andre Tanner
> > ---
> > 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
>
> If there are some problems to handle KERN_CONT you should say something
> here.
ACK.
> You should even add in cc: the kernel ML, however it seems a good
> work.
Well I first wanted to get some feedback from the embedded people.
I will probably send it to LKML after the 2.6.31 release, don't know
how the chances for inclusion are though.
Marc
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Marc Andre Tanner >< http://www.brain-dump.org/ >< GPG key: CF7D56C0
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