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    SubjectRe: [PATCH-RT] preempt.h: Fix implicit declaration of 'preempt_check_resched_rt'
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    On Thu, 2012-03-08 at 21:13 +0100, John Kacur wrote:
    > When building a non-preempt kernel where CONFIG_PREEMPT_COUNT is not
    > defined the following build break occurs.
    >
    > /home/jkacur/linux-rt/block/blk-softirq.c: In function ‘trigger_softirq’:
    > /home/jkacur/linux-rt/block/blk-softirq.c:54: error: implicit declaration of function ‘preempt_check_resched_rt’
    > make[2]: *** [block/blk-softirq.o] Error 1
    > make[1]: *** [block/blk-softirq.o] Error 2
    > make: *** [sub-make] Error 2
    >
    > This patch fixes the build error by adding a define to the
    > !CONFIG_PREEMPT_COUNT section.
    >
    > Signed-off-by: Clark Williams <williams@redhat.com>

    Why Clark's SOB? Did he write it and send it to you?

    -- Steve

    > Signed-off-by: John Kacur <jkacur@redhat.com>
    > ---
    > include/linux/preempt.h | 1 +
    > 1 files changed, 1 insertions(+), 0 deletions(-)
    >
    > diff --git a/include/linux/preempt.h b/include/linux/preempt.h
    > index fa40695..58d8982 100644
    > --- a/include/linux/preempt.h
    > +++ b/include/linux/preempt.h
    > @@ -107,6 +107,7 @@ do { \
    > #define preempt_disable_notrace() do { } while (0)
    > #define preempt_enable_no_resched_notrace() do { } while (0)
    > #define preempt_enable_notrace() do { } while (0)
    > +#define preempt_check_resched_rt() do { } while (0)
    >
    > #endif /* CONFIG_PREEMPT_COUNT */
    >


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