linux-kernel - Re: [PATCH] mm/cma: print total and used pages in cma

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Message-ID: <202508170014.PK57XSd7-lkp@intel.com>
Date: Sun, 17 Aug 2025 00:30:16 +0800
From: kernel test robot <lkp@...el.com>
To: Xiang Gao <gxxa03070307@...il.com>, akpm@...ux-foundation.org,
	david@...hat.com
Cc: oe-kbuild-all@...ts.linux.dev, lorenzo.stoakes@...cle.com,
	Liam.Howlett@...cle.com, vbabka@...e.cz, rppt@...nel.org,
	surenb@...gle.com, mhocko@...e.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, gaoxiang17 <gaoxiang17@...omi.com>
Subject: Re: [PATCH] mm/cma: print total and used pages in cma_alloc()

Hi Xiang,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Xiang-Gao/mm-cma-print-total-and-used-pages-in-cma_alloc/20250816-122940
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20250816042842.3959315-1-gxxa03070307%40gmail.com
patch subject: [PATCH] mm/cma: print total and used pages in cma_alloc()
config: arm-randconfig-002-20250816 (https://download.01.org/0day-ci/archive/20250817/202508170014.PK57XSd7-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250817/202508170014.PK57XSd7-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508170014.PK57XSd7-lkp@intel.com/

All errors (new ones prefixed by >>):

   mm/cma.c: In function 'cma_get_used_pages':
>> mm/cma.c:784:26: error: 'struct cma' has no member named 'bitmap'
     784 |  used = bitmap_weight(cma->bitmap, (int)cma_bitmap_maxno(cma));
         |                          ^~
>> mm/cma.c:784:41: error: too few arguments to function 'cma_bitmap_maxno'
     784 |  used = bitmap_weight(cma->bitmap, (int)cma_bitmap_maxno(cma));
         |                                         ^~~~~~~~~~~~~~~~
   In file included from mm/cma.c:34:
   mm/cma.h:77:29: note: declared here
      77 | static inline unsigned long cma_bitmap_maxno(struct cma *cma,
         |                             ^~~~~~~~~~~~~~~~


vim +784 mm/cma.c

   778	
   779	static unsigned long cma_get_used_pages(struct cma *cma)
   780	{
   781		unsigned long used;
   782	
   783		spin_lock_irq(&cma->lock);
 > 784		used = bitmap_weight(cma->bitmap, (int)cma_bitmap_maxno(cma));
   785		spin_unlock_irq(&cma->lock);
   786	
   787		return used << cma->order_per_bit;
   788	}
   789	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki