From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (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 598C02EA47C for ; Wed, 13 Aug 2025 08:21:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755073296; cv=none; b=bHT5WgJyJtvfPYLNz7sTNng+0f+Wtjqn7Q9HEjEPEvWgqVDA8Vv/ntDT336bW1yMdgdoXqgb6grdQYwElUWwDucxeKncrdIK4j7FFWx91yw1VByYWEgbcdTIb0yhMH9bfzY+P4Cf0Da5Vqufp5Qft0XCdbTYHgYq5sunXNZL1dM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755073296; c=relaxed/simple; bh=rDDxNyVDTajL4EF9VAKq0BLlpJPF2zJqeb4lAxYADJE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=pCBnjlZGtCtC4i04E85T6T/HcFuX0XsV8AHiaGawJhe4tBAq7oUw2lKUjryNZEkSPETYVXpobfoSSBpORED3CXlzPt2+J8R8rxhZpQqTMdiN7wx7xWhI3fIt2SfGS3TY+tGcKdW8sMPX/rzM7uUxFMnIqCdiNa8w9Rnl7e8cUhs= 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=RiM+p6ka; arc=none smtp.client-ip=192.198.163.19 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="RiM+p6ka" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1755073294; x=1786609294; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=rDDxNyVDTajL4EF9VAKq0BLlpJPF2zJqeb4lAxYADJE=; b=RiM+p6kaBDwrfGw3vcL+P9IjEIRup2kot218pX4/DAoorCcQqsns792v +IfhlUxScc/nwMm5utBegy/Jx561E9cIHn+wiws1cealu+1hqFioUNKOs Hrc+QriXO0aAnA4UG3CQPYVnwnMXzYmi+2ZVZyTeEvizfoqJIIW3VgyVN 7J7unNuWFt+GeU8zSNVf98PJLwg88kSMvN7iA1YkXMAe8Itiw4wpY/t2v tj/kZOnD2g1/T3bJ6MXljdWNxsOrsFAs2x88FZJRq0WwPnQ8FRROigndE NfhzTG9AsvSjyM544ubyUHmV3xofFVHiCP9tecaeQ3pUAMJ2GMGcoX+28 Q==; X-CSE-ConnectionGUID: Fp7XGBl4RzCP75Kv63IK+A== X-CSE-MsgGUID: AfwIkKTUTPm67DksTJMRUQ== X-IronPort-AV: E=McAfee;i="6800,10657,11520"; a="56386685" X-IronPort-AV: E=Sophos;i="6.17,285,1747724400"; d="scan'208";a="56386685" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Aug 2025 01:21:34 -0700 X-CSE-ConnectionGUID: 2OmNiBG3Q8a3fKVxVGztOw== X-CSE-MsgGUID: iTY/g4UnRReMEJNxq2+png== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.17,285,1747724400"; d="scan'208";a="166786869" Received: from lkp-server02.sh.intel.com (HELO 4ea60e6ab079) ([10.239.97.151]) by fmviesa009.fm.intel.com with ESMTP; 13 Aug 2025 01:21:30 -0700 Received: from kbuild by 4ea60e6ab079 with local (Exim 4.96) (envelope-from ) id 1um6jg-0009hg-2h; Wed, 13 Aug 2025 08:21:28 +0000 Date: Wed, 13 Aug 2025 16:20:59 +0800 From: kernel test robot To: Sebastian Andrzej Siewior , linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev Cc: oe-kbuild-all@lists.linux.dev, Ingo Molnar , Steven Rostedt , Thomas Gleixner , Tejun Heo , Lai Jiangshan Subject: Re: [PATCH] softirq: Provide a handshake for canceling tasklets via polling on PREEMPT_RT Message-ID: <202508131652.C4118cYh-lkp@intel.com> References: <20250812143930.22RBn5BW@linutronix.de> 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: <20250812143930.22RBn5BW@linutronix.de> Hi Sebastian, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.17-rc1 next-20250813] [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/Sebastian-Andrzej-Siewior/softirq-Provide-a-handshake-for-canceling-tasklets-via-polling-on-PREEMPT_RT/20250812-224928 base: linus/master patch link: https://lore.kernel.org/r/20250812143930.22RBn5BW%40linutronix.de patch subject: [PATCH] softirq: Provide a handshake for canceling tasklets via polling on PREEMPT_RT config: csky-randconfig-002-20250813 (https://download.01.org/0day-ci/archive/20250813/202508131652.C4118cYh-lkp@intel.com/config) compiler: csky-linux-gcc (GCC) 13.4.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250813/202508131652.C4118cYh-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/202508131652.C4118cYh-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/softirq.c:853:13: warning: 'tasklet_callback_cancel_wait_running' defined but not used [-Wunused-function] 853 | static void tasklet_callback_cancel_wait_running(void) { } | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/tasklet_callback_cancel_wait_running +853 kernel/softirq.c 850 851 static void tasklet_lock_callback(void) { } 852 static void tasklet_unlock_callback(void) { } > 853 static void tasklet_callback_cancel_wait_running(void) { } 854 static void tasklet_callback_sync_wait_running(void) { } 855 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki