sched.c calls arch_load_balance() which calls find_idle_package()
at least on a p4.
(tried your fix and build failed due to that.)
On Monday 29 July 2002 16:46, Greg Louis wrote:
> On Mon, 29 Jul 2002 13:41:07 -0500,
>
> "Stephen Lee" <steve@tuxsoft.com> wrote:
> > When compiling with this patch I get the following:
> >
> > gcc -D__KERNEL__ -I/usr/src/linux-2.4.19-rc3-ac4/include -Wall
> > -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing
> > -fno-common-fomit-f
> > rame-pointer -pipe -mpreferred-stack-boundary=2 -march=athlon
> > -DKBUILD_BASENAME=main -c -o init/main.o init/main.c
> > In file included from
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/smp.h:14,
> > from
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/sched.h:23,
> > from
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/mm.h:4,
> > from
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/slab.h:14,
> > from
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/proc_fs.h:5,
> > from init/main.c:15:
> > /usr/src/linux-2.4.19-rc3-ac4/include/asm/smp.h: In function
> > `find_idle_package':
> > /usr/src/linux-2.4.19-rc3-ac4/include/asm/smp.h:153: `smp_num_cpus'
> > undeclared (first use in this function)
> > /usr/src/linux-2.4.19-rc3-ac4/include/asm/smp.h:153: (Each undeclared
> > identifier is reported only once
> > /usr/src/linux-2.4.19-rc3-ac4/include/asm/smp.h:153: for each function
> > it appears in.)
> > /usr/src/linux-2.4.19-rc3-ac4/include/asm/smp.h:163: warning: implicit
> > declaration of function `idle_cpu'
> > /usr/src/linux-2.4.19-rc3-ac4/include/asm/smp.h: In function
> > `arch_load_balance':
> > /usr/src/linux-2.4.19-rc3-ac4/include/asm/smp.h:177: warning: implicit
> > declaration of function `cpu_rq'
> > /usr/src/linux-2.4.19-rc3-ac4/include/asm/smp.h:177: warning:
> > assignment makes pointer from integer without a cast
> > /usr/src/linux-2.4.19-rc3-ac4/include/asm/smp.h:178: warning: implicit
> > declaration of function `resched_task'
> > /usr/src/linux-2.4.19-rc3-ac4/include/asm/smp.h:178: dereferencing
> > pointer to incomplete type
> > In file included from
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/sched.h:23,
> > from
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/mm.h:4,
> > from
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/slab.h:14,
> > from
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/proc_fs.h:5,
> > from init/main.c:15:
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/smp.h: At top level:
> > /usr/src/linux-2.4.19-rc3-ac4/include/linux/smp.h:58: `smp_num_cpus'
> > used prior to declaration
> > make: *** [init/main.o] Error 1
>
> The two inline functions containing these errors appear to be nowhere
> used, at least as far as I can tell with find -exec grep. Removing the
> code allows successful compilation on an SMP box, and it seems to be
> running ok with the new kernel. (Despite the directory name this is an
> -ac4 tree).
>
> --- linux-2.4.19rc3/include/asm-i386/smp.h~ 2002-07-29 16:26:36.000000000
> -0400 +++ linux-2.4.19rc3/include/asm-i386/smp.h 2002-07-29
> 16:26:36.000000000 -0400 @@ -140,6 +140,7 @@
>
> #define NO_PROC_ID 0xFF /* No processor magic marker */
>
> +#if 0
> #ifdef CONFIG_SMP
> #define ARCH_HAS_LOAD_BALANCE
> /*
> @@ -183,3 +184,4 @@
> }
> #endif
> #endif
> +#endif
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