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 E11BFC433F5 for ; Sun, 27 Feb 2022 19:51:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231539AbiB0TwZ (ORCPT ); Sun, 27 Feb 2022 14:52:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230444AbiB0TwW (ORCPT ); Sun, 27 Feb 2022 14:52:22 -0500 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C324B33A1B for ; Sun, 27 Feb 2022 11:51:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1645991504; x=1677527504; h=date:from:to:cc:subject:message-id:mime-version; bh=QQ/Nrw3Gdo6dX9SuTohdk3UBtUwaqOaYtCxuaZPrYEA=; b=nMuxniVbjK2CpXHiPqt1wJGiA8F7Bs/yLvJyhVJ7SqKbsSzConeDCQUC QKTLs7D4Te6JTpRmUb3NDl866sSRjkoIErwhPcQArsnewm794FbkxXbb7 Hlx+avVMaDx44f5b188itFLQvSSXMQOFqM8Blwz6lB6AMih/Z+/QtlXw0 PL2Ns3rk+ZbEzA4dBtOh8ZYmNvbFVleQOscEXqH9WSwJd7zU5TWAHPiYA hr+LrNTVNgHnHcKltClCLz0h7ra1WwF/PR6RoCPIwcjXYPy+ZnHON483E hAdkwXymKISpl8B/cqojxhYnArirJtYKzUAC+f6uZg4FwG2CIRiBA+y88 w==; X-IronPort-AV: E=McAfee;i="6200,9189,10271"; a="252683389" X-IronPort-AV: E=Sophos;i="5.90,141,1643702400"; d="scan'208";a="252683389" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Feb 2022 11:51:44 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,141,1643702400"; d="scan'208";a="640677487" Received: from lkp-server01.sh.intel.com (HELO 788b1cd46f0d) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 27 Feb 2022 11:51:42 -0800 Received: from kbuild by 788b1cd46f0d with local (Exim 4.92) (envelope-from ) id 1nOPa1-0006lK-Ko; Sun, 27 Feb 2022 19:51:41 +0000 Date: Mon, 28 Feb 2022 03:50:43 +0800 From: kernel test robot To: Bert Vermeulen Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Thomas Bogendoerfer , Sander Vanheule Subject: arch/mips/kernel/vpe-mt.c:178:7: warning: no previous prototype for function 'vpe_alloc' Message-ID: <202202280331.yb2wf0qs-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Bert, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 2293be58d6a18cab800e25e42081bacb75c05752 commit: 4042147a0cc6af5a400b5e12a7855e893dec01b4 MIPS: Add Realtek RTL838x/RTL839x support as generic MIPS system date: 1 year, 1 month ago config: mips-randconfig-r025-20220228 (https://download.01.org/0day-ci/archive/20220228/202202280331.yb2wf0qs-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4042147a0cc6af5a400b5e12a7855e893dec01b4 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 4042147a0cc6af5a400b5e12a7855e893dec01b4 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash arch/mips/kernel/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> arch/mips/kernel/vpe-mt.c:178:7: warning: no previous prototype for function 'vpe_alloc' [-Wmissing-prototypes] void *vpe_alloc(void) ^ arch/mips/kernel/vpe-mt.c:178:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void *vpe_alloc(void) ^ static >> arch/mips/kernel/vpe-mt.c:196:5: warning: no previous prototype for function 'vpe_start' [-Wmissing-prototypes] int vpe_start(void *vpe, unsigned long start) ^ arch/mips/kernel/vpe-mt.c:196:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int vpe_start(void *vpe, unsigned long start) ^ static >> arch/mips/kernel/vpe-mt.c:206:5: warning: no previous prototype for function 'vpe_stop' [-Wmissing-prototypes] int vpe_stop(void *vpe) ^ arch/mips/kernel/vpe-mt.c:206:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int vpe_stop(void *vpe) ^ static >> arch/mips/kernel/vpe-mt.c:227:5: warning: no previous prototype for function 'vpe_free' [-Wmissing-prototypes] int vpe_free(void *vpe) ^ arch/mips/kernel/vpe-mt.c:227:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int vpe_free(void *vpe) ^ static 4 warnings generated. vim +/vpe_alloc +178 arch/mips/kernel/vpe-mt.c 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 175 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 176 /* module wrapper entry points */ 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 177 /* give me a vpe */ 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 @178 void *vpe_alloc(void) 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 179 { 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 180 int i; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 181 struct vpe *v; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 182 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 183 /* find a vpe */ 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 184 for (i = 1; i < MAX_VPES; i++) { 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 185 v = get_vpe(i); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 186 if (v != NULL) { 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 187 v->state = VPE_STATE_INUSE; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 188 return v; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 189 } 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 190 } 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 191 return NULL; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 192 } 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 193 EXPORT_SYMBOL(vpe_alloc); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 194 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 195 /* start running from here */ 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 @196 int vpe_start(void *vpe, unsigned long start) 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 197 { 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 198 struct vpe *v = vpe; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 199 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 200 v->__start = start; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 201 return vpe_run(v); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 202 } 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 203 EXPORT_SYMBOL(vpe_start); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 204 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 205 /* halt it for now */ 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 @206 int vpe_stop(void *vpe) 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 207 { 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 208 struct vpe *v = vpe; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 209 struct tc *t; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 210 unsigned int evpe_flags; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 211 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 212 evpe_flags = dvpe(); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 213 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 214 t = list_entry(v->tc.next, struct tc, tc); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 215 if (t != NULL) { 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 216 settc(t->index); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 217 write_vpe_c0_vpeconf0(read_vpe_c0_vpeconf0() & ~VPECONF0_VPA); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 218 } 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 219 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 220 evpe(evpe_flags); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 221 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 222 return 0; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 223 } 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 224 EXPORT_SYMBOL(vpe_stop); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 225 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 226 /* I've done with it thank you */ 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 @227 int vpe_free(void *vpe) 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 228 { 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 229 struct vpe *v = vpe; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 230 struct tc *t; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 231 unsigned int evpe_flags; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 232 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 233 t = list_entry(v->tc.next, struct tc, tc); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 234 if (t == NULL) 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 235 return -ENOEXEC; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 236 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 237 evpe_flags = dvpe(); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 238 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 239 /* Put MVPE's into 'configuration state' */ 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 240 set_c0_mvpcontrol(MVPCONTROL_VPC); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 241 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 242 settc(t->index); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 243 write_vpe_c0_vpeconf0(read_vpe_c0_vpeconf0() & ~VPECONF0_VPA); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 244 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 245 /* halt the TC */ 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 246 write_tc_c0_tchalt(TCHALT_H); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 247 mips_ihb(); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 248 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 249 /* mark the TC unallocated */ 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 250 write_tc_c0_tcstatus(read_tc_c0_tcstatus() & ~TCSTATUS_A); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 251 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 252 v->state = VPE_STATE_UNUSED; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 253 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 254 clear_c0_mvpcontrol(MVPCONTROL_VPC); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 255 evpe(evpe_flags); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 256 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 257 return 0; 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 258 } 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 259 EXPORT_SYMBOL(vpe_free); 1a2a6d7e8816ed Dengcheng Zhu 2013-10-30 260 :::::: The code at line 178 was first introduced by commit :::::: 1a2a6d7e8816ed2b2679a0c4f7ba4019cd31dd62 MIPS: APRP: Split VPE loader into separate files. :::::: TO: Deng-Cheng Zhu :::::: CC: Ralf Baechle --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org