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X-CSE-ConnectionGUID: 6z6RpIugS4G9xmLnV7XngQ== X-CSE-MsgGUID: fgFJqPWZSTyH1htGhYVx+A== X-IronPort-AV: E=McAfee;i="6800,10657,11742"; a="93179810" X-IronPort-AV: E=Sophos;i="6.23,148,1770624000"; d="scan'208";a="93179810" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Mar 2026 04:10:50 -0700 X-CSE-ConnectionGUID: TIhXxH2NTkiv3cMrceKMMQ== X-CSE-MsgGUID: Q79xZq8XQEujZC6TnehROw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,148,1770624000"; d="scan'208";a="229848130" Received: from lkp-server01.sh.intel.com (HELO 3905d212be1b) ([10.239.97.150]) by orviesa003.jf.intel.com with ESMTP; 29 Mar 2026 04:10:45 -0700 Received: from kbuild by 3905d212be1b with local (Exim 4.98.2) (envelope-from ) id 1w6o2T-00000000CJ7-1TfT; Sun, 29 Mar 2026 11:10:41 +0000 Date: Sun, 29 Mar 2026 19:10:20 +0800 From: kernel test robot To: Youngjun Park , Andrew Morton Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Linux Memory Management List , Chris Li , Youngjun Park , cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, kasong@tencent.com, hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, shikemeng@huaweicloud.com, nphamcs@gmail.com, bhe@redhat.com, baohua@kernel.org, gunho.lee@lge.com, taejoon.song@lge.com, hyungjun.cho@lge.com, mkoutny@suse.com Subject: Re: [PATCH v5 3/4] mm: memcontrol: add interfaces for swap tier selection Message-ID: <202603291945.9q4pyvON-lkp@intel.com> References: <20260325175453.2523280-4-youngjun.park@lge.com> Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260325175453.2523280-4-youngjun.park@lge.com> Hi Youngjun, kernel test robot noticed the following build errors: [auto build test ERROR on 6381a729fa7dda43574d93ab9c61cec516dd885b] url: https://github.com/intel-lab-lkp/linux/commits/Youngjun-Park/mm-swap-introduce-swap-tier-infrastructure/20260327-203639 base: 6381a729fa7dda43574d93ab9c61cec516dd885b patch link: https://lore.kernel.org/r/20260325175453.2523280-4-youngjun.park%40lge.com patch subject: [PATCH v5 3/4] mm: memcontrol: add interfaces for swap tier selection config: hexagon-randconfig-002-20260329 (https://download.01.org/0day-ci/archive/20260329/202603291945.9q4pyvON-lkp@intel.com/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 054e11d1a17e5ba88bb1a8ef32fad3346e80b186) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260329/202603291945.9q4pyvON-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202603291945.9q4pyvON-lkp@intel.com/ All errors (new ones prefixed by >>): mm/swap_tier.c:141:10: warning: format specifies type 'long' but the argument has type '__ptrdiff_t' (aka 'int') [-Wformat] 139 | len += sysfs_emit_at(buf, len, "%-16s %-5ld %-11d %-11d\n", | ~~~~~ | %-5td 140 | tier->name, 141 | TIER_IDX(tier), | ^~~~~~~~~~~~~~ mm/swap_tier.c:33:24: note: expanded from macro 'TIER_IDX' 33 | #define TIER_IDX(tier) ((tier) - swap_tiers) | ^~~~~~~~~~~~~~~~~~~~~ >> mm/swap_tier.c:342:8: error: incomplete definition of type 'struct mem_cgroup' 342 | child->tier_mask |= mask; | ~~~~~^ include/linux/mm_types.h:36:8: note: forward declaration of 'struct mem_cgroup' 36 | struct mem_cgroup; | ^ mm/swap_tier.c:343:8: error: incomplete definition of type 'struct mem_cgroup' 343 | child->tier_effective_mask |= mask; | ~~~~~^ include/linux/mm_types.h:36:8: note: forward declaration of 'struct mem_cgroup' 36 | struct mem_cgroup; | ^ mm/swap_tier.c:420:20: error: incomplete definition of type 'struct mem_cgroup' 420 | = parent ? parent->tier_effective_mask : TIER_ALL_MASK; | ~~~~~~^ include/linux/mm_types.h:36:8: note: forward declaration of 'struct mem_cgroup' 36 | struct mem_cgroup; | ^ mm/swap_tier.c:422:7: error: incomplete definition of type 'struct mem_cgroup' 422 | memcg->tier_effective_mask | ~~~~~^ include/linux/mm_types.h:36:8: note: forward declaration of 'struct mem_cgroup' 36 | struct mem_cgroup; | ^ mm/swap_tier.c:423:27: error: incomplete definition of type 'struct mem_cgroup' 423 | = effective_mask & memcg->tier_mask; | ~~~~~^ include/linux/mm_types.h:36:8: note: forward declaration of 'struct mem_cgroup' 36 | struct mem_cgroup; | ^ 1 warning and 5 errors generated. vim +342 mm/swap_tier.c 330 331 /* 332 * When a tier is removed, set its bit in every memcg's tier_mask and 333 * tier_effective_mask. This prevents stale tier indices from being 334 * silently filtered out if the same index is reused later. 335 */ 336 static void swap_tier_memcg_propagate(int mask) 337 { 338 struct mem_cgroup *child; 339 340 rcu_read_lock(); 341 for_each_mem_cgroup_tree(child, root_mem_cgroup) { > 342 child->tier_mask |= mask; 343 child->tier_effective_mask |= mask; 344 } 345 rcu_read_unlock(); 346 } 347 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki