On Thu, 7 Aug 2008, Geert Uytterhoeven wrote:
> On Thu, 7 Aug 2008, Amol Lad wrote:
> > > Probably nobody noticed as this part of the code takes care of the
> > > `obsolete-style' parameters. `module_param' is the new way.
> >
> > Ohh, btw how module_param is different from obsolete style paramaters
> > ? Do we need to pass arguments to kernel from bootloader using a
> > different method for getting them processed using module_param ?
>
> Documentation/kernel-parameters.txt:
>
> Module parameters for loadable modules are specified only as the
> parameter name with optional '=' and value as appropriate, such as:
>
> modprobe usbcore blinkenlights=1
>
> Module parameters for modules that are built into the kernel image
> are specified on the kernel command line with the module name plus
> '.' plus parameter name, with '=' and value if appropriate, such as:
>
> usbcore.blinkenlights=1
um ... all of the above handles those command-line parms that are
defined in *module* source files, but that doesn't solve the problem
of defining those parms that are always built into the kernel and are
currently defined by one of __setup_param() or __early_param().
from include/linux/init.h:
=====
struct obs_kernel_param {
const char *str;
int (*setup_func)(char *);
int early;
};
/*
* Only for really core code. See moduleparam.h for the normal way.
*
* Force the alignment so the compiler doesn't space elements of the
* obs_kernel_param "array" too far apart in .init.setup.
*/
=====
is the module-based approach really supposed to eventually replace
the above? how?
rday
--
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry:
Have classroom, will lecture.
http://crashcourse.ca Waterloo, Ontario, CANADA
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