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* [mmotm:master 203/499] include/linux/vmstat.h:32:2: error: implicit declaration of function 'raw_cpu_inc'
@ 2014-03-22  0:50 kbuild test robot
  2014-03-22  2:12 ` Andrew Morton
  0 siblings, 1 reply; 2+ messages in thread
From: kbuild test robot @ 2014-03-22  0:50 UTC (permalink / raw)
  To: Christoph Lameter
  Cc: Linux Memory Management List, Andrew Morton, Johannes Weiner, kbuild-all

tree:   git://git.cmpxchg.org/linux-mmotm.git master
head:   4ddd4bc6e081ef29f7adaacb357b77052fefcd7e
commit: 4ac4f1a27eed39f833aa8874515127e3bd0ff971 [203/499] vmstat: use raw_cpu_ops to avoid false positives on preemption checks
config: make ARCH=x86_64 allnoconfig

Note: the mmotm/master HEAD 4ddd4bc6e081ef29f7adaacb357b77052fefcd7e builds fine.
      It only hurts bisectibility.

All error/warnings:

   In file included from include/linux/mm.h:897:0,
                    from include/linux/suspend.h:8,
                    from arch/x86/kernel/asm-offsets.c:12:
   include/linux/vmstat.h: In function '__count_vm_event':
>> include/linux/vmstat.h:32:2: error: implicit declaration of function 'raw_cpu_inc' [-Werror=implicit-function-declaration]
     raw_cpu_inc(vm_event_states.event[item]);
     ^
   include/linux/vmstat.h: In function '__count_vm_events':
>> include/linux/vmstat.h:42:2: error: implicit declaration of function 'raw_cpu_add' [-Werror=implicit-function-declaration]
     raw_cpu_add(vm_event_states.event[item], delta);
     ^
   cc1: some warnings being treated as errors
   make[2]: *** [arch/x86/kernel/asm-offsets.s] Error 1
   make[2]: Target `__build' not remade because of errors.
   make[1]: *** [prepare0] Error 2
   make[1]: Target `prepare' not remade because of errors.
   make: *** [sub-make] Error 2

vim +/raw_cpu_inc +32 include/linux/vmstat.h

    26	};
    27	
    28	DECLARE_PER_CPU(struct vm_event_state, vm_event_states);
    29	
    30	static inline void __count_vm_event(enum vm_event_item item)
    31	{
  > 32		raw_cpu_inc(vm_event_states.event[item]);
    33	}
    34	
    35	static inline void count_vm_event(enum vm_event_item item)
    36	{
    37		this_cpu_inc(vm_event_states.event[item]);
    38	}
    39	
    40	static inline void __count_vm_events(enum vm_event_item item, long delta)
    41	{
  > 42		raw_cpu_add(vm_event_states.event[item], delta);
    43	}
    44	
    45	static inline void count_vm_events(enum vm_event_item item, long delta)

---
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^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [mmotm:master 203/499] include/linux/vmstat.h:32:2: error: implicit declaration of function 'raw_cpu_inc'
  2014-03-22  0:50 [mmotm:master 203/499] include/linux/vmstat.h:32:2: error: implicit declaration of function 'raw_cpu_inc' kbuild test robot
@ 2014-03-22  2:12 ` Andrew Morton
  0 siblings, 0 replies; 2+ messages in thread
From: Andrew Morton @ 2014-03-22  2:12 UTC (permalink / raw)
  To: kbuild test robot
  Cc: Christoph Lameter, Linux Memory Management List, Johannes Weiner,
	kbuild-all

On Sat, 22 Mar 2014 08:50:32 +0800 kbuild test robot <fengguang.wu@intel.com> wrote:

> tree:   git://git.cmpxchg.org/linux-mmotm.git master
> head:   4ddd4bc6e081ef29f7adaacb357b77052fefcd7e
> commit: 4ac4f1a27eed39f833aa8874515127e3bd0ff971 [203/499] vmstat: use raw_cpu_ops to avoid false positives on preemption checks
> config: make ARCH=x86_64 allnoconfig
> 
> Note: the mmotm/master HEAD 4ddd4bc6e081ef29f7adaacb357b77052fefcd7e builds fine.
>       It only hurts bisectibility.
> 
> All error/warnings:
> 
>    In file included from include/linux/mm.h:897:0,
>                     from include/linux/suspend.h:8,
>                     from arch/x86/kernel/asm-offsets.c:12:
>    include/linux/vmstat.h: In function '__count_vm_event':
> >> include/linux/vmstat.h:32:2: error: implicit declaration of function 'raw_cpu_inc' [-Werror=implicit-function-declaration]
>      raw_cpu_inc(vm_event_states.event[item]);
>      ^
>    include/linux/vmstat.h: In function '__count_vm_events':
> >> include/linux/vmstat.h:42:2: error: implicit declaration of function 'raw_cpu_add' [-Werror=implicit-function-declaration]
>      raw_cpu_add(vm_event_states.event[item], delta);
>      ^
>    cc1: some warnings being treated as errors
>    make[2]: *** [arch/x86/kernel/asm-offsets.s] Error 1
>    make[2]: Target `__build' not remade because of errors.
>    make[1]: *** [prepare0] Error 2
>    make[1]: Target `prepare' not remade because of errors.
>    make: *** [sub-make] Error 2

bah, OK, patch ordering problem.  I'll shuffle them around and we'll be
stuck with a small and quite minor bisection window where the kernel
emits warnings at runtime.

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^ permalink raw reply	[flat|nested] 2+ messages in thread

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2014-03-22  0:50 [mmotm:master 203/499] include/linux/vmstat.h:32:2: error: implicit declaration of function 'raw_cpu_inc' kbuild test robot
2014-03-22  2:12 ` Andrew Morton

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