From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1AED853E0B for ; Fri, 28 Aug 2026 00:55:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787878551; cv=none; b=LZTwLqmDEGuSxkoA+8NEFHY0XvDsXZBT8+vQ0zpcqKV4KDL8y6ntSf8To7yOCQKLs8fBWhp1Bu+vXduoceaJ+raCO+QgKKKcWZblcXnrj0Z0o9tLyktZ+gRevB8l+PmcGjPCX6DmIGI0Xg2FkhrMDxcKs9ZzfRu9+OiB6xBhbb4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787878551; c=relaxed/simple; bh=pxJJ/Gq2BOZaGKWbI4sy8nb0IV9yvaOJO4OZ8lJb3Fw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CunffDUkhSW4FXgyvSlGaBImLtesUydgVVcDxpD8wTUTSwUStLx9owNAUsE1LIRsPrMUR0uwobHfWWMEUdCl2MVyKbjwapFL/6DOFPYrkhs+ssuEq8JgdRvgzDcLD6Wj6miyiCskcqwuFfBEqZPdurfzHaA3mBEcrqX6wEx8yo8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=TdBTlzKQ; arc=none smtp.client-ip=198.175.65.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="TdBTlzKQ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1787878550; x=1819414550; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=pxJJ/Gq2BOZaGKWbI4sy8nb0IV9yvaOJO4OZ8lJb3Fw=; b=TdBTlzKQo/2RJ0ldl0lyYP8VLhRvpVYtZhPi2XIWwKjqrnfl4MiCFbtm AQ/fVukYQ3+85UCdKY1ZqRBI5biDGYXraZEapf60GfS34CE8Bseu1Rdlk s8s8oTVI25BxEaX/nox+px7Itr1lGDm6H16qEE/Za1SauEaGPi/N2aJWy BuEnc+T9ge6lIaNnmU+3+feesHwM8edN/uhCQI6/RkislZ0ndCp9iPli8 Sc2I07Mrr/9/z6eh8aruNXFUTgn/UOrHmbV+pHluaT8oyorrjpSZX7CQo 1Sq6BZCsJ2/6nYtuXrXY6PDXs06cnnDSi2UevSJkHmFI/VveqDB3dsAsC A==; X-CSE-ConnectionGUID: n4xBz2RqSGag6PMVZIbUbA== X-CSE-MsgGUID: QLt4KBNwTcGv3QdczbwiGw== X-IronPort-AV: E=McAfee;i="6800,10657,11888"; a="92246509" X-IronPort-AV: E=Sophos;i="6.25,247,1779174000"; d="scan'208";a="92246509" 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> Precedence: bulk X-Mailing-List: linux-kernel@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: <20260827163953.83520-1-zenghui.yu@linux.dev> 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