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X-CSE-ConnectionGUID: VwKfy0EgTbuyaRvhpiCkaA== X-CSE-MsgGUID: 27axfN0qQJu9Y92u89LWoQ== X-IronPort-AV: E=McAfee;i="6800,10657,11888"; a="92246512" X-IronPort-AV: E=Sophos;i="6.25,247,1779174000"; d="scan'208";a="92246512" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Aug 2026 17:55:50 -0700 X-CSE-ConnectionGUID: D94VrNDqS12fWXoUw+nM9w== X-CSE-MsgGUID: TwDvaBS/Q6qrl8OnJjoNTw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,247,1779174000"; d="scan'208";a="271834038" Received: from lkp-server01.sh.intel.com (HELO 3532383e6126) ([10.239.97.150]) by orviesa004.jf.intel.com with ESMTP; 27 Aug 2026 17:55:47 -0700 Received: from kbuild by 3532383e6126 with local (Exim 4.98.2) (envelope-from ) id 1wzksj-00000000ADN-27PO; Fri, 28 Aug 2026 00:55:45 +0000 Date: Fri, 28 Aug 2026 08:54:51 +0800 From: kernel test robot To: Zenghui Yu , damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, sj@kernel.org, akpm@linux-foundation.org, "Zenghui Yu (Huawei)" Subject: Re: [PATCH] mm/damon/core: remove declaration of kdamond_fn() Message-ID: <202608280848.9o0Z64CP-lkp@intel.com> References: <20260827163953.83520-1-zenghui.yu@linux.dev> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260827163953.83520-1-zenghui.yu@linux.dev> X-Stat-Signature: dnctsuztyz518m86n9e5ou6thgsbe5rb X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 9F4561A0005 X-Rspam-User: X-HE-Tag: 1787878550-840033 X-HE-Meta: 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 OpLw4eB0 Yuf6EIabFQ/4+qaloCx7E8cJl6aLCcbb5XGOkoIz9VHEVTMcj46ozdARr+S29Mb2tOg/jPfC+iuMxbIr2+/QiKs2AbFEtnuWRLpY0F0ICbw6efcwdRTwlxy9A2dJnd5Vj03ifVvQzOGYrtoXMBjxvow/DT/npg+UesFSZfSxwBYHPMSsz5a8GTokTjT54dCY4ApUeMOG1cbdc26MGrb3MSCgNG20MkqIjH31V+arur9my3wEPIr+EXxXDZd9AWqAAWG0L6j91OeVu9e1R3b22vcupWl7uidTpeTZL0dPts4yuDttIfw4JZhpwbPIgzsJMWsrqfVhsIve+eiR7sI1nUiTdd5dTKtFlJ8Z5fAvudGfKxTGt1z9+nav3lg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Zenghui, 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/Zenghui-Yu/mm-damon-core-remove-declaration-of-kdamond_fn/20260828-003953 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20260827163953.83520-1-zenghui.yu%40linux.dev patch subject: [PATCH] mm/damon/core: remove declaration of kdamond_fn() config: hexagon-randconfig-r052-20260828 (https://download.01.org/0day-ci/archive/20260828/202608280848.9o0Z64CP-lkp@intel.com/config) compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260828/202608280848.9o0Z64CP-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/202608280848.9o0Z64CP-lkp@intel.com/ All errors (new ones prefixed by >>): >> mm/damon/core.c:1941:30: error: use of undeclared identifier 'kdamond_fn' 1941 | ctx->kdamond = kthread_run(kdamond_fn, ctx, "kdamond.%d", | ^ 1 error generated. vim +/kdamond_fn +1941 mm/damon/core.c b1029f29eb1d5fb SJ Park 2026-02-28 1924 2224d8485492e49 SeongJae Park 2021-09-07 1925 /* 2224d8485492e49 SeongJae Park 2021-09-07 1926 * __damon_start() - Starts monitoring with given context. 2224d8485492e49 SeongJae Park 2021-09-07 1927 * @ctx: monitoring context 2224d8485492e49 SeongJae Park 2021-09-07 1928 * 2224d8485492e49 SeongJae Park 2021-09-07 1929 * This function should be called while damon_lock is hold. 2224d8485492e49 SeongJae Park 2021-09-07 1930 * 2224d8485492e49 SeongJae Park 2021-09-07 1931 * Return: 0 on success, negative error code otherwise. 2224d8485492e49 SeongJae Park 2021-09-07 1932 */ 2224d8485492e49 SeongJae Park 2021-09-07 1933 static int __damon_start(struct damon_ctx *ctx) 2224d8485492e49 SeongJae Park 2021-09-07 1934 { 2224d8485492e49 SeongJae Park 2021-09-07 1935 int err = -EBUSY; 2224d8485492e49 SeongJae Park 2021-09-07 1936 2224d8485492e49 SeongJae Park 2021-09-07 1937 mutex_lock(&ctx->kdamond_lock); 2224d8485492e49 SeongJae Park 2021-09-07 1938 if (!ctx->kdamond) { 2224d8485492e49 SeongJae Park 2021-09-07 1939 err = 0; 6376a824595607e SJ Park 2023-12-08 1940 reinit_completion(&ctx->kdamond_started); 2224d8485492e49 SeongJae Park 2021-09-07 @1941 ctx->kdamond = kthread_run(kdamond_fn, ctx, "kdamond.%d", 2224d8485492e49 SeongJae Park 2021-09-07 1942 nr_running_ctxs); 2224d8485492e49 SeongJae Park 2021-09-07 1943 if (IS_ERR(ctx->kdamond)) { 2224d8485492e49 SeongJae Park 2021-09-07 1944 err = PTR_ERR(ctx->kdamond); 7ec1992b891e59d Colin Ian King 2021-11-05 1945 ctx->kdamond = NULL; 6376a824595607e SJ Park 2023-12-08 1946 } else { 6376a824595607e SJ Park 2023-12-08 1947 wait_for_completion(&ctx->kdamond_started); 2224d8485492e49 SeongJae Park 2021-09-07 1948 } 2224d8485492e49 SeongJae Park 2021-09-07 1949 } 2224d8485492e49 SeongJae Park 2021-09-07 1950 mutex_unlock(&ctx->kdamond_lock); 2224d8485492e49 SeongJae Park 2021-09-07 1951 2224d8485492e49 SeongJae Park 2021-09-07 1952 return err; 2224d8485492e49 SeongJae Park 2021-09-07 1953 } 2224d8485492e49 SeongJae Park 2021-09-07 1954 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki