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SubjectRe: 2.6.0-test2-mm5 x86-64 link errors
Patrick McLean <> wrote:
> I get to play with an opteron for a bit, so I'm going to try 2.6 on it,
> but test2-mm5 seems to compile fine, but when it goes to link it, it
> gives these errors:
> LD init/built-in.o
> LD .tmp_vmlinux1
> kernel/built-in.o(.text+0x359): In function `try_to_wake_up':
> : undefined reference to `sched_clock'

Ingo's scheduler patch requires that the architecture provide a
sched_clock() function which returns nanoseconds. We only have ia32, ia64,
ppc and ppc64 versions thus far.

A lame version is to just add

unsigned long long sched_clock(void)
return (unsigned long long)jiffies * (1000000000 / HZ);

to arch/<foo>/kernel/timer.c

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