On Sun, Dec 15, 2024 at 07:34:16PM +0800, kernel test robot wrote: > Hi Mauro, > > FYI, the error/warning still remains. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 2d8308bf5b67dff50262d8a9260a50113b3628c6 > commit: 52042e2db45290f6a512d525518488b7bf143531 scripts: kernel-doc: validate kernel-doc markup with the actual names > date: 3 years, 11 months ago > config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20241215/202412151922.P70dxEDk-lkp@xxxxxxxxx/config) > compiler: arm-linux-gnueabi-gcc (GCC) 12.4.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241215/202412151922.P70dxEDk-lkp@xxxxxxxxx/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202412151922.P70dxEDk-lkp@xxxxxxxxx/ > > All warnings (new ones prefixed by >>): Sorry, kindly ignore this report, the commit is not the actual cause of the issue. > > lib/hweight.c:14: warning: Function parameter or member 'w' not described in '__sw_hweight32' > >> lib/hweight.c:14: warning: expecting prototype for hweightN(). Prototype was for __sw_hweight32() instead > > > vim +14 lib/hweight.c > > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 5 > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 6 /** > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 7 * hweightN - returns the hamming weight of a N-bit word > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 8 * @x: the word to weigh > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 9 * > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 10 * The Hamming Weight of a number is the total number of bits set in it. > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 11 */ > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 12 > d61931d89be5063 Borislav Petkov 2010-03-05 13 unsigned int __sw_hweight32(unsigned int w) > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 @14 { > 72d931046030beb Linus Torvalds 2014-09-13 15 #ifdef CONFIG_ARCH_HAS_FAST_MULTIPLIER > 39d997b514e12d5 Akinobu Mita 2009-12-21 16 w -= (w >> 1) & 0x55555555; > 39d997b514e12d5 Akinobu Mita 2009-12-21 17 w = (w & 0x33333333) + ((w >> 2) & 0x33333333); > 39d997b514e12d5 Akinobu Mita 2009-12-21 18 w = (w + (w >> 4)) & 0x0f0f0f0f; > 39d997b514e12d5 Akinobu Mita 2009-12-21 19 return (w * 0x01010101) >> 24; > 39d997b514e12d5 Akinobu Mita 2009-12-21 20 #else > f9b4192923fa6e3 Akinobu Mita 2006-03-26 21 unsigned int res = w - ((w >> 1) & 0x55555555); > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 22 res = (res & 0x33333333) + ((res >> 2) & 0x33333333); > f9b4192923fa6e3 Akinobu Mita 2006-03-26 23 res = (res + (res >> 4)) & 0x0F0F0F0F; > f9b4192923fa6e3 Akinobu Mita 2006-03-26 24 res = res + (res >> 8); > f9b4192923fa6e3 Akinobu Mita 2006-03-26 25 return (res + (res >> 16)) & 0x000000FF; > 39d997b514e12d5 Akinobu Mita 2009-12-21 26 #endif > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 27 } > d61931d89be5063 Borislav Petkov 2010-03-05 28 EXPORT_SYMBOL(__sw_hweight32); > 3b9ed1a5d2d121f Akinobu Mita 2006-03-26 29 > > :::::: The code at line 14 was first introduced by commit > :::::: 3b9ed1a5d2d121f32d2cb4f2b05f1fc57c99c946 [PATCH] bitops: generic hweight{64,32,16,8}() > > :::::: TO: Akinobu Mita <mita@xxxxxxxxxxxxxxxx> > :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxx> > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki >
