On 03/25/2015 02:52 PM, Roar Thronæs wrote:
- A few source files and several headers within the Linux kernel source
tree are not actually used. Would it be OK to remove them?
Possibly.
Which ones are you thinking of?
Here are some examples:
Some can be deleted without any compile errors:
linux/fs/jbd/* (no journaling fs support any time soon)
linux/kernel/sched.c (seems to be moved to sys/src)
Other require removal of unnecessary Makefile dependencies:
linux/partitions/ibm.c (partition layout used on storage devices
for IBM mainframes)
linux/kernel/pm.c (power management mainly for laptops)
Headers that are included, but are really not needed:
linux/include/linux/joystick.h (joystick)
linux/include/linux/qic117.h (tape device from the 90's)
linux/include/linux/ultrasound.h (gravis ultrasound soundcard)
There are many more. Some might be useful to keep although not used at
present, like things for SMP.
- The Linux kernel configuration system is still used, albeit only half. Is
there any reason to keep this in place?
Make config is not supposed to be used.
Everything needed is now set and not supposed to be changed.
Have just not given priority to removing that part of make.
OK, could be cleaned up but low prio.
- Would cross compiling be a solution to the gs problem? And if so, did you
try it? I am aware that a libc port is required, but smaller ones than
glibc are available these days and one of them might suffice for now.
Cross compile from what to what, with which libraries?
No, never tried cross compiling, nor other libcs.
Another libc with just introduce other untested problems, and other
conventions with errno/gs.
I'm not sure it causes any problems right now, but using the default
compiler could introduce difficult to pinpoint issues. Some useful info
can be found here: http://wiki.osdev.org/Main_Page
Regards,
Guido
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