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    SubjectRe: [patch] CFS scheduler, -v17
    Date
    On Friday 15 June 2007 18:28, Luiz Fernando N. Capitulino wrote:
    > Hmm, I'm getting this while compiling:
    >
    > """
    > LD .tmp_vmlinux1
    > kernel/built-in.o: In function `rq_clock':
    > /home/lcapitulino/src/kernels/upstream/linux-2.6-cfs/kernel/sched.c:321:
    > undefined reference to `cpu_of'
    > /home/lcapitulino/src/kernels/upstream/linux-2.6-cfs/kernel/sched.c:321:
    > undefined reference to `cpu_of'
    > /home/lcapitulino/src/kernels/upstream/linux-2.6-cfs/kernel/sched.c:321:
    > undefined reference to `cpu_of'
    > /home/lcapitulino/src/kernels/upstream/linux-2.6-cfs/kernel/sched.c:321:
    > undefined reference to `cpu_of'
    > /home/lcapitulino/src/kernels/upstream/linux-2.6-cfs/kernel/sched.c:321:
    > undefined reference to `cpu_of'
    > kernel/built-in.o:/home/lcapitulino/src/kernels/upstream/linux-2.6-cfs/kern
    >el/sched.c:321: more undefined references to `cpu_of' follow make: ***
    > [.tmp_vmlinux1] Error 1
    > """
    >
    > The code in question is really strange:
    >
    > #ifdef CONFIG_SMP
    > ...
    > static inline int cpu_of(struct rq *rq)
    > #ifdef CONFIG_SMP
    > return rq->cpu;
    > #else
    > return 0;
    > #endif
    > }
    > ...
    > #endif

    I patched kernel 2.6.21.5 with CFS v17 and I didn't experience this problem (I
    checked that piece of code and I didn't see something wrong).
    Looks like it only appears in kernel 2.6.22-rc4.

    --
    Miguel Botón
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