Re: [PATCH] Patches for tiny 386 kernels, again. Linux kernel 2.6.22.7

Randy Dunlap
2007-09-26T23:22:54Z

On Wed, 26 Sep 2007 11:42:16 -0700 Jonathan Campbell wrote:

> Here is the DMI patch again, written against linux-2.6.23-rc8,
> with some of the #ifdef CONFIG_DMI's removed and moved
> to include/linux/dmi.h. Putting them there in the way I've done
> ensures that you don't have to put #ifdef CONFIG_DMI
> around each dmi_check_machine() and that you don't
> have to apply little patches to so many device drivers.

Damaged as the patch is, I was able to apply it by using
'patch -l' (ignore whitespace) + some fuzz. Not something that
Linus or Andrew would or should do.

I built and booted the kernel, it's running fine (x86_32 notebook).

> diff -u -r linux-2.6.23-rc8-old/init/Kconfig linux-2.6.23-rc8/init/Kconfig
> --- linux-2.6.23-rc8-old/init/Kconfig 2007-09-21 22:38:23.000000000 +0000
> +++ linux-2.6.23-rc8/init/Kconfig 2007-09-26 00:03:05.000000000 +0000
> @@ -542,6 +542,18 @@
> on EMBEDDED systems. /proc/vmstat will only show page counts
> if VM event counters are disabled.
>
> +config DMI
> + default y
> + bool "Enable DMI support" if EMBEDDED
> + depends on X86
> + help
> + This enables support for processing the Desktop Management
> + Interface structures present in most modern BIOSes. If you are
> + building a kernel for an older Pentium, 486, or 386 system and
> + memory is tight, you can disable this to help reduce the size
> + of your kernel by about 6K.
> + If unsure, say Y.
> +

This is in the General setup menu. How about putting it into the
EMBEDDED menu instead? [Configure standard kernel features (for
small systems)]

> config SLUB_DEBUG
> default y
> bool "Enable SLUB debugging support" if EMBEDDED

There are still several build warnings that need attention:

drivers/acpi/sleep/main.c:223: warning: 'acpisleep_dmi_table' defined but not used
drivers/pnp/pnpbios/core.c:509: warning: 'pnpbios_dmi_table' defined but not used
arch/i386/pci/irq.c:1035: warning: 'pciirq_dmi_table' defined but not used
arch/i386/pci/common.c:148: warning: 'pciprobe_dmi_table' defined but not used

+#endif // CONFIG_DMI

Use /* ... */ style comments instead of // comments.

---
~Randy
Phaedrus says that Quality is about caring.