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* Re: [RFC PATCH 2/6] mm/page_counter: Introduce tiered memory awareness to page_counter
       [not found] <20260223223830.586018-3-joshua.hahnjy@gmail.com>
@ 2026-02-24  9:25 ` kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-02-24  9:25 UTC (permalink / raw)
  To: Joshua Hahn; +Cc: llvm, oe-kbuild-all

Hi Joshua,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build warnings:

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

url:    https://github.com/intel-lab-lkp/linux/commits/Joshua-Hahn/mm-memory-tiers-Introduce-tier-aware-memcg-limit-sysfs/20260224-122156
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20260223223830.586018-3-joshua.hahnjy%40gmail.com
patch subject: [RFC PATCH 2/6] mm/page_counter: Introduce tiered memory awareness to page_counter
config: x86_64-allmodconfig (https://download.01.org/0day-ci/archive/20260224/202602241757.iMuSSiTC-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260224/202602241757.iMuSSiTC-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/oe-kbuild-all/202602241757.iMuSSiTC-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> mm/hugetlb_cgroup.c:739:18: warning: implicit conversion from 'unsigned long' to 'unsigned int' changes value from 4579131496 to 284164200 [-Wconstant-conversion]
     736 |         {
         |         ~
     737 |                 .name = "events.local",
     738 |                 .seq_show = hugetlb_events_local_show,
     739 |                 .file_offset = MEMFILE_OFFSET(struct hugetlb_cgroup, events_local_file[0]),
         |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   mm/hugetlb_cgroup.c:24:57: note: expanded from macro 'MEMFILE_OFFSET'
      24 | #define MEMFILE_OFFSET(t, m0)   (((offsetof(t, m0) << 16) | sizeof_field(t, m0)))
         |                                   ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
   mm/hugetlb_cgroup.c:733:18: warning: implicit conversion from 'unsigned long' to 'unsigned int' changes value from 4565500008 to 270532712 [-Wconstant-conversion]
     730 |         {
         |         ~
     731 |                 .name = "events",
     732 |                 .seq_show = hugetlb_events_show,
     733 |                 .file_offset = MEMFILE_OFFSET(struct hugetlb_cgroup, events_file[0]),
         |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   mm/hugetlb_cgroup.c:24:57: note: expanded from macro 'MEMFILE_OFFSET'
      24 | #define MEMFILE_OFFSET(t, m0)   (((offsetof(t, m0) << 16) | sizeof_field(t, m0)))
         |                                   ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
   2 warnings generated.


vim +739 mm/hugetlb_cgroup.c

faced7e0806cf4 Giuseppe Scrivano 2019-12-16  702  
47179fe03588ca Xiu Jianfeng      2024-06-12  703  static struct cftype hugetlb_dfl_tmpl[] = {
47179fe03588ca Xiu Jianfeng      2024-06-12  704  	{
47179fe03588ca Xiu Jianfeng      2024-06-12  705  		.name = "max",
47179fe03588ca Xiu Jianfeng      2024-06-12  706  		.private = RES_LIMIT,
47179fe03588ca Xiu Jianfeng      2024-06-12  707  		.seq_show = hugetlb_cgroup_read_u64_max,
47179fe03588ca Xiu Jianfeng      2024-06-12  708  		.write = hugetlb_cgroup_write_dfl,
47179fe03588ca Xiu Jianfeng      2024-06-12  709  		.flags = CFTYPE_NOT_ON_ROOT,
47179fe03588ca Xiu Jianfeng      2024-06-12  710  	},
47179fe03588ca Xiu Jianfeng      2024-06-12  711  	{
47179fe03588ca Xiu Jianfeng      2024-06-12  712  		.name = "rsvd.max",
47179fe03588ca Xiu Jianfeng      2024-06-12  713  		.private = RES_RSVD_LIMIT,
47179fe03588ca Xiu Jianfeng      2024-06-12  714  		.seq_show = hugetlb_cgroup_read_u64_max,
47179fe03588ca Xiu Jianfeng      2024-06-12  715  		.write = hugetlb_cgroup_write_dfl,
47179fe03588ca Xiu Jianfeng      2024-06-12  716  		.flags = CFTYPE_NOT_ON_ROOT,
47179fe03588ca Xiu Jianfeng      2024-06-12  717  	},
47179fe03588ca Xiu Jianfeng      2024-06-12  718  	{
47179fe03588ca Xiu Jianfeng      2024-06-12  719  		.name = "current",
47179fe03588ca Xiu Jianfeng      2024-06-12  720  		.private = RES_USAGE,
47179fe03588ca Xiu Jianfeng      2024-06-12  721  		.seq_show = hugetlb_cgroup_read_u64_max,
47179fe03588ca Xiu Jianfeng      2024-06-12  722  		.flags = CFTYPE_NOT_ON_ROOT,
47179fe03588ca Xiu Jianfeng      2024-06-12  723  	},
47179fe03588ca Xiu Jianfeng      2024-06-12  724  	{
47179fe03588ca Xiu Jianfeng      2024-06-12  725  		.name = "rsvd.current",
47179fe03588ca Xiu Jianfeng      2024-06-12  726  		.private = RES_RSVD_USAGE,
47179fe03588ca Xiu Jianfeng      2024-06-12  727  		.seq_show = hugetlb_cgroup_read_u64_max,
47179fe03588ca Xiu Jianfeng      2024-06-12  728  		.flags = CFTYPE_NOT_ON_ROOT,
47179fe03588ca Xiu Jianfeng      2024-06-12  729  	},
47179fe03588ca Xiu Jianfeng      2024-06-12  730  	{
47179fe03588ca Xiu Jianfeng      2024-06-12  731  		.name = "events",
47179fe03588ca Xiu Jianfeng      2024-06-12  732  		.seq_show = hugetlb_events_show,
47179fe03588ca Xiu Jianfeng      2024-06-12  733  		.file_offset = MEMFILE_OFFSET(struct hugetlb_cgroup, events_file[0]),
47179fe03588ca Xiu Jianfeng      2024-06-12  734  		.flags = CFTYPE_NOT_ON_ROOT,
47179fe03588ca Xiu Jianfeng      2024-06-12  735  	},
47179fe03588ca Xiu Jianfeng      2024-06-12  736  	{
47179fe03588ca Xiu Jianfeng      2024-06-12  737  		.name = "events.local",
47179fe03588ca Xiu Jianfeng      2024-06-12  738  		.seq_show = hugetlb_events_local_show,
47179fe03588ca Xiu Jianfeng      2024-06-12 @739  		.file_offset = MEMFILE_OFFSET(struct hugetlb_cgroup, events_local_file[0]),
47179fe03588ca Xiu Jianfeng      2024-06-12  740  		.flags = CFTYPE_NOT_ON_ROOT,
47179fe03588ca Xiu Jianfeng      2024-06-12  741  	},
47179fe03588ca Xiu Jianfeng      2024-06-12  742  	{
47179fe03588ca Xiu Jianfeng      2024-06-12  743  		.name = "numa_stat",
47179fe03588ca Xiu Jianfeng      2024-06-12  744  		.seq_show = hugetlb_cgroup_read_numa_stat,
47179fe03588ca Xiu Jianfeng      2024-06-12  745  		.flags = CFTYPE_NOT_ON_ROOT,
47179fe03588ca Xiu Jianfeng      2024-06-12  746  	},
47179fe03588ca Xiu Jianfeng      2024-06-12  747  	/* don't need terminator here */
47179fe03588ca Xiu Jianfeng      2024-06-12  748  };
47179fe03588ca Xiu Jianfeng      2024-06-12  749  

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

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     [not found] <20260223223830.586018-3-joshua.hahnjy@gmail.com>
2026-02-24  9:25 ` [RFC PATCH 2/6] mm/page_counter: Introduce tiered memory awareness to page_counter kernel test robot

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