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    Subject[PATCH] sched/s390: fix compile error in sched/core.c
    From: Christian Borntraeger <>

    commit 029632fbb7b7c9d85063cc9eb470de6c54873df3
    sched: Make separate sched*.c translation units

    removed the include of asm/mutex.h from sched.c. This breaks the combination of

    like s390 without mutex debugging:

    CC kernel/sched/core.o
    kernel/sched/core.c: In function ‘mutex_spin_on_owner’:
    kernel/sched/core.c:3287: error: implicit declaration of function ‘arch_mutex_cpu_relax’
    make[2]: *** [kernel/sched/core.o] Error 1

    Lets re-add the include to kernel/sched/core.c

    Signed-off-by: Christian Borntraeger <>
    kernel/sched/core.c | 3 +++
    1 files changed, 3 insertions(+), 0 deletions(-)

    diff --git a/kernel/sched/core.c b/kernel/sched/core.c
    index cecbb64..f82efdc 100644
    --- a/kernel/sched/core.c
    +++ b/kernel/sched/core.c
    @@ -74,6 +74,9 @@

    #include <asm/tlb.h>
    #include <asm/irq_regs.h>
    +#include <asm/mutex.h>
    #include <asm/paravirt.h>
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