From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6944E9371D for ; Mon, 9 Oct 2023 22:28:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1378909AbjJIW2i (ORCPT ); Mon, 9 Oct 2023 18:28:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59754 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1378880AbjJIW2h (ORCPT ); Mon, 9 Oct 2023 18:28:37 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 97F769D for ; Mon, 9 Oct 2023 15:28:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1696890514; x=1728426514; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=tcdMrCDUe3iaka9lM/WN33sOnz9XetzlVI9bNrAOSSU=; b=NOWQsJGAG3QXfWzwpjrg5i1wdvFAJZt3KwFumxkyOJrY2NiW7quXpWKB fWDV0C22s21IGdXJBxU9oX+XRJtH6i/qr2Qa2/HC6u/8kvLoq6ksJI5GJ fTLeZoANkzqrdYVaD/IZv/E2rblC6cBoqIz94dV8nx17fSc9WWj66cXAI RzliZaOLpQl4rkuPzWL+BOzjIY/sCVGvZiFy9ZCeD0FLdcY4d7UeFeozK 8yb4adUa3kKl21cFUj5SD8tUEoIIe7uBvb8+JZrIiP2Ojozj2Cwu22MU2 6aO8fHch7Nq/lnpmcKR1xHvCsbcO/0S/kaU3m05qUydmIsFxc4q0Wh8kx A==; X-IronPort-AV: E=McAfee;i="6600,9927,10858"; a="470520019" X-IronPort-AV: E=Sophos;i="6.03,211,1694761200"; d="scan'208";a="470520019" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2023 15:26:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10858"; a="926897957" X-IronPort-AV: E=Sophos;i="6.03,211,1694761200"; d="scan'208";a="926897957" Received: from lkp-server02.sh.intel.com (HELO 4ed589823ba4) ([10.239.97.151]) by orsmga005.jf.intel.com with ESMTP; 09 Oct 2023 15:26:19 -0700 Received: from kbuild by 4ed589823ba4 with local (Exim 4.96) (envelope-from ) id 1qpyhc-0000lg-3B; Mon, 09 Oct 2023 22:26:16 +0000 Date: Tue, 10 Oct 2023 06:25:40 +0800 From: kernel test robot To: Sidhartha Kumar , linux-kernel@vger.kernel.org, linux-mm@kvack.org, maple-tree@lists.infradead.org Cc: oe-kbuild-all@lists.linux.dev, akpm@linux-foundation.org, willy@infradead.org, liam.howlett@oracle.com, zhangpeng.00@bytedance.com, Sidhartha Kumar Subject: Re: [PATCH 1/3] maple_tree: introduce mas_prealloc_calc() Message-ID: <202310100603.qsn3ruBx-lkp@intel.com> References: <20231009201639.920512-2-sidhartha.kumar@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231009201639.920512-2-sidhartha.kumar@oracle.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sidhartha, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on linus/master v6.6-rc5 next-20231009] [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/Sidhartha-Kumar/maple_tree-introduce-mas_prealloc_calc/20231010-041859 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20231009201639.920512-2-sidhartha.kumar%40oracle.com patch subject: [PATCH 1/3] maple_tree: introduce mas_prealloc_calc() config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20231010/202310100603.qsn3ruBx-lkp@intel.com/config) compiler: m68k-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231010/202310100603.qsn3ruBx-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/202310100603.qsn3ruBx-lkp@intel.com/ All warnings (new ones prefixed by >>): >> lib/maple_tree.c:5428:5: warning: no previous prototype for 'mas_prealloc_calc' [-Wmissing-prototypes] 5428 | int mas_prealloc_calc(struct ma_wr_state *wr_mas) | ^~~~~~~~~~~~~~~~~ vim +/mas_prealloc_calc +5428 lib/maple_tree.c 5420 5421 /** 5422 * mas_prealloc_calc() - Calculate number of nodes needed for a 5423 * store operation. 5424 * @wr_mas: The maple write state 5425 * 5426 * Return: Number of nodes required for preallocation. 5427 */ > 5428 int mas_prealloc_calc(struct ma_wr_state *wr_mas) 5429 { 5430 struct ma_state *mas = wr_mas->mas; 5431 unsigned char node_size; 5432 5433 if (unlikely(!mas->index && mas->last == ULONG_MAX)) 5434 return 1; 5435 5436 /* Root expand */ 5437 if (unlikely(mas_is_none(mas) || mas_is_ptr(mas))) 5438 return 1; 5439 5440 if (unlikely(!mas_wr_walk(wr_mas))) { 5441 /* Spanning store, use worst case for now */ 5442 return 1 + mas_mt_height(mas) * 3; 5443 } 5444 5445 /* At this point, we are at the leaf node that needs to be altered. */ 5446 /* Exact fit, no nodes needed. */ 5447 if (wr_mas->r_min == mas->index && wr_mas->r_max == mas->last) 5448 return 0; 5449 5450 mas_wr_end_piv(wr_mas); 5451 node_size = mas_wr_new_end(wr_mas); 5452 if (node_size >= mt_slots[wr_mas->type]) { 5453 /* Split, worst case for now. */ 5454 return 1 + mas_mt_height(mas) * 2; 5455 } 5456 5457 /* New root needs a singe node */ 5458 if (unlikely(mte_is_root(mas->node))) 5459 return 1; 5460 5461 /* Potential spanning rebalance collapsing a node, use worst-case */ 5462 if (node_size - 1 <= mt_min_slots[wr_mas->type]) 5463 return mas_mt_height(mas) * 2 - 1; 5464 5465 /* node store, slot store needs one node */ 5466 return 1; 5467 } 5468 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki