linux-kernel - Re: [PATCH 3/3] linux/bitmap: Replace find_fisrt_{zero

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Message-ID: <564D40E4.5070900@gmail.com>
Date:	Thu, 19 Nov 2015 11:24:20 +0800
From:	hejianet <hejianet@...il.com>
To:	kbuild test robot <lkp@...el.com>
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Michal Nazarewicz <mina86@...a86.com>,
	Yury Norov <yury.norov@...il.com>, Tejun Heo <tj@...nel.org>,
	Martin Kepplinger <martink@...teo.de>,
	George Spelvin <linux@...izon.com>,
	Ingo Molnar <mingo@...nel.org>, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 3/3] linux/bitmap: Replace find_fisrt_{zero_}bit with the
 new lightweight api

Thanks, I only compiled and tested in x86_64, will check what's wrong in 
m68k

B.R.
Justin


在 11/19/15 10:53 AM, kbuild test robot 写道:
> Hi Jia,
>
> [auto build test ERROR on: v4.4-rc1]
> [also build test ERROR on: next-20151118]
>
> url:    https://github.com/0day-ci/linux/commits/Jia-He/Improve-bitmap_empty-and-bitmap_full/20151119-103554
> config: m68k-allyesconfig (attached as .config)
> reproduce:
>          wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>          chmod +x ~/bin/make.cross
>          # save the attached .config to linux build tree
>          make.cross ARCH=m68k
>
> All errors (new ones prefixed by >>):
>
>     kernel/time/Kconfig:155:warning: range is invalid
>     warning: (USB_OTG_FSM && FSL_USB2_OTG && USB_MV_OTG) selects USB_OTG which has unmet direct dependencies (USB_SUPPORT && USB && PM)
>     warning: (SINGLE_MEMORY_CHUNK) selects NEED_MULTIPLE_NODES which has unmet direct dependencies (DISCONTIGMEM || NUMA)
>     warning: (PREEMPT && DEBUG_ATOMIC_SLEEP) selects PREEMPT_COUNT which has unmet direct dependencies (COLDFIRE)
>     warning: (USB_OTG_FSM && FSL_USB2_OTG && USB_MV_OTG) selects USB_OTG which has unmet direct dependencies (USB_SUPPORT && USB && PM)
>     warning: (SINGLE_MEMORY_CHUNK) selects NEED_MULTIPLE_NODES which has unmet direct dependencies (DISCONTIGMEM || NUMA)
>     warning: (PREEMPT && DEBUG_ATOMIC_SLEEP) selects PREEMPT_COUNT which has unmet direct dependencies (COLDFIRE)
>     In file included from include/linux/cpumask.h:11:0,
>                      from include/linux/rcupdate.h:40,
>                      from include/linux/rbtree.h:34,
>                      from include/linux/sched.h:22,
>                      from arch/m68k/kernel/asm-offsets.c:14:
>     include/linux/bitmap.h: In function 'bitmap_empty':
>>> include/linux/bitmap.h:284:2: error: implicit declaration of function 'all_bit_is_zero' [-Werror=implicit-function-declaration]
>       return all_bit_is_zero(src, nbits);
>       ^
>     include/linux/bitmap.h: In function 'bitmap_full':
>>> include/linux/bitmap.h:292:2: error: implicit declaration of function 'all_bit_is_one' [-Werror=implicit-function-declaration]
>       return all_bit_is_one(src, nbits);
>       ^
>     cc1: some warnings being treated as errors
>     make[2]: *** [arch/m68k/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 +/all_bit_is_zero +284 include/linux/bitmap.h
>
>     278	
>     279	static inline int bitmap_empty(const unsigned long *src, unsigned nbits)
>     280	{
>     281		if (small_const_nbits(nbits))
>     282			return ! (*src & BITMAP_LAST_WORD_MASK(nbits));
>     283	
>   > 284		return all_bit_is_zero(src, nbits);
>     285	}
>     286	
>     287	static inline int bitmap_full(const unsigned long *src, unsigned int nbits)
>     288	{
>     289		if (small_const_nbits(nbits))
>     290			return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits));
>     291	
>   > 292		return all_bit_is_one(src, nbits);
>     293	}
>     294	
>     295	static __always_inline int bitmap_weight(const unsigned long *src, unsigned int nbits)
>
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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