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    Subject[PATCH 2.6.20-rc1] fix vm_events_fold_cpu() build breakage
    fix vm_events_fold_cpu() build breakage

    2.6.20-rc1 does not build properly if CONFIG_VM_EVENT_COUNTERS is set
    and CONFIG_HOTPLUG is unset:

    CC init/version.o
    LD init/built-in.o
    LD .tmp_vmlinux1
    mm/built-in.o: In function `page_alloc_cpu_notify':
    page_alloc.c:(.text+0x56eb): undefined reference to `vm_events_fold_cpu'
    make: *** [.tmp_vmlinux1] Error 1

    Signed-Off-By: Magnus Damm <>

    Applies on top of linux-2.6.20-rc1.

    include/linux/vmstat.h | 4 ++++
    1 file changed, 4 insertions(+)

    --- 0001/include/linux/vmstat.h
    +++ 0003/include/linux/vmstat.h 2006-12-15 11:46:23.000000000 +0900
    @@ -73,7 +73,11 @@ static inline void count_vm_events(enum

    extern void all_vm_events(unsigned long *);
    +#ifdef CONFIG_HOTPLUG
    extern void vm_events_fold_cpu(int cpu);
    +#define vm_events_fold_cpu(x) do { } while (0)


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      Last update: 2006-12-15 04:43    [W:0.018 / U:31.180 seconds]
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