Re: [PATCH 3/3] linux/bitmap: Replace find_fisrt_{zero_}bit with the new lightweight api

hejianet
2015-11-19T03:24:33Z

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)
>
> ---
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