Re: [PATCH v4 3/6] mm: selftest to verify zero-filled pages are mapped to zeropage

[kernel test robot <lkp@intel.com>]

Hi Usama,

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/Usama-Arif/mm-free-zapped-tail-pages-when-splitting-isolated-thp/20240819-103336
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20240819023145.2415299-4-usamaarif642%40gmail.com
patch subject: [PATCH v4 3/6] mm: selftest to verify zero-filled pages are mapped to zeropage
:::::: branch date: 2 days ago
:::::: commit date: 2 days ago
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240821/202408211408.L2BFUig9-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@intel.com>
| Closes: https://lore.kernel.org/r/202408211408.L2BFUig9-lkp@intel.com/

All errors (new ones prefixed by >>):

>> vm_util.c:175:15: error: conflicting types for 'rss_anon'; have 'long unsigned int(void)'
     175 | unsigned long rss_anon(void)
         |               ^~~~~~~~
   In file included from vm_util.c:11:
   vm_util.h:42:10: note: previous declaration of 'rss_anon' with type 'uint64_t(void)' {aka 'long long unsigned int(void)'}
      42 | uint64_t rss_anon(void);
         |          ^~~~~~~~


vim +175 tools/testing/selftests/mm/vm_util.c

642bc52aed9c99e tools/testing/selftests/vm/vm_util.c Muhammad Usama Anjum 2022-04-28  174  
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19 @175  unsigned long rss_anon(void)
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  176  {
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  177  	unsigned long rss_anon = 0;
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  178  	FILE *fp;
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  179  	char buffer[MAX_LINE_LENGTH];
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  180  
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  181  	fp = fopen(STATUS_FILE_PATH, "r");
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  182  	if (!fp)
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  183  		ksft_exit_fail_msg("%s: Failed to open file %s\n", __func__, STATUS_FILE_PATH);
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  184  
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  185  	if (!check_for_pattern(fp, "RssAnon:", buffer, sizeof(buffer)))
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  186  		goto err_out;
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  187  
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  188  	if (sscanf(buffer, "RssAnon:%10lu kB", &rss_anon) != 1)
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  189  		ksft_exit_fail_msg("Reading status error\n");
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  190  
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  191  err_out:
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  192  	fclose(fp);
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  193  	return rss_anon;
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  194  }
10bf5ecc7e9d437 tools/testing/selftests/mm/vm_util.c Alexander Zhu        2024-08-19  195  

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