linux-kernel - Re: [PATCH 8/8] memcg: rename mem_cgroup_ino() to mem_cgroup

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Message-ID: <202512262017.v77XZpwk-lkp@intel.com>
Date: Fri, 26 Dec 2025 21:23:04 +0800
From: kernel test robot <lkp@...el.com>
To: Shakeel Butt <shakeel.butt@...ux.dev>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: oe-kbuild-all@...ts.linux.dev,
	Linux Memory Management List <linux-mm@...ck.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...nel.org>,
	Roman Gushchin <roman.gushchin@...ux.dev>,
	Muchun Song <muchun.song@...ux.dev>, SeongJae Park <sj@...nel.org>,
	Meta kernel team <kernel-team@...a.com>, cgroups@...r.kernel.org,
	damon@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 8/8] memcg: rename mem_cgroup_ino() to mem_cgroup_id()

Hi Shakeel,

kernel test robot noticed the following build warnings:

[auto build test WARNING on sj/damon/next]
[cannot apply to akpm-mm/mm-everything tj-cgroup/for-next linus/master v6.19-rc2 next-20251219]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Shakeel-Butt/memcg-introduce-private-id-API-for-in-kernel-users/20251226-072954
base:   https://git.kernel.org/pub/scm/linux/kernel/git/sj/linux.git damon/next
patch link:    https://lore.kernel.org/r/20251225232116.294540-9-shakeel.butt%40linux.dev
patch subject: [PATCH 8/8] memcg: rename mem_cgroup_ino() to mem_cgroup_id()
config: openrisc-allmodconfig (https://download.01.org/0day-ci/archive/20251226/202512262017.v77XZpwk-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251226/202512262017.v77XZpwk-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/202512262017.v77XZpwk-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/asm-generic/bug.h:31,
                    from arch/openrisc/include/asm/bug.h:5,
                    from include/linux/bug.h:5,
                    from include/linux/thread_info.h:13,
                    from include/asm-generic/current.h:6,
                    from ./arch/openrisc/include/generated/asm/current.h:1,
                    from include/linux/sched.h:12,
                    from include/linux/rcupdate.h:27,
                    from include/linux/rculist.h:11,
                    from include/linux/pid.h:6,
                    from mm/damon/sysfs.c:8:
   mm/damon/sysfs.c: In function 'debug_show':
>> include/linux/kern_levels.h:5:25: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'u64' {aka 'long long unsigned int'} [-Wformat=]
       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/printk.h:484:25: note: in definition of macro 'printk_index_wrap'
     484 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   include/linux/printk.h:585:9: note: in expansion of macro 'printk'
     585 |         printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~
   include/linux/kern_levels.h:14:25: note: in expansion of macro 'KERN_SOH'
      14 | #define KERN_INFO       KERN_SOH "6"    /* informational */
         |                         ^~~~~~~~
   include/linux/printk.h:585:16: note: in expansion of macro 'KERN_INFO'
     585 |         printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
         |                ^~~~~~~~~
   mm/damon/sysfs.c:2704:17: note: in expansion of macro 'pr_info'
    2704 |                 pr_info("id: %u, path: %s\n", mem_cgroup_id(memcg), path);
         |                 ^~~~~~~


vim +5 include/linux/kern_levels.h

314ba3520e513a Joe Perches 2012-07-30  4  
04d2c8c83d0e3a Joe Perches 2012-07-30 @5  #define KERN_SOH	"\001"		/* ASCII Start Of Header */
04d2c8c83d0e3a Joe Perches 2012-07-30  6  #define KERN_SOH_ASCII	'\001'
04d2c8c83d0e3a Joe Perches 2012-07-30  7  

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