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 47EFBC43217 for ; Mon, 14 Feb 2022 11:18:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350772AbiBNLS0 (ORCPT ); Mon, 14 Feb 2022 06:18:26 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:48546 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350415AbiBNLSN (ORCPT ); Mon, 14 Feb 2022 06:18:13 -0500 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B665657AA for ; Mon, 14 Feb 2022 02:50:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1644835856; x=1676371856; h=date:from:to:cc:subject:message-id:mime-version; bh=/kLJyU48R70GHyVr31Y/V7xMHTXJq7WJn+RQtezx4m8=; b=N6RvS1d39U0XEMfNXcpSdQ+tZQl8mf3X0YodzS17U0Kczw4H82ClRXUT BBGBIQB3G8T8TCo0k3walfTTvQHegRHkmNojaXw1oHnngUfUe/mPPiYsU fJPtWRD0DZp5B+9mmZgM7zjHXAoglRJtaoODKor79JMbk4Te+HkTXfzhl bVK5SZLhaLeV4QxIxnRwKBClVQNiOW5pfQnSZR1BpWLW+YuujMuxAxV/0 9UodE6DQ+doXoy5HsN3inYSHoALsUlKiEdhTWO+jPobes6KeKthxydx0C HuKAtoHYciiidaWSLSpqNFBep6iw/lk6LAVKQEwhDJbRLQLkbqFQ17Scj A==; X-IronPort-AV: E=McAfee;i="6200,9189,10257"; a="249812835" X-IronPort-AV: E=Sophos;i="5.88,367,1635231600"; d="scan'208";a="249812835" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Feb 2022 02:50:55 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,367,1635231600"; d="scan'208";a="703019134" Received: from lkp-server01.sh.intel.com (HELO d95dc2dabeb1) ([10.239.97.150]) by orsmga005.jf.intel.com with ESMTP; 14 Feb 2022 02:50:53 -0800 Received: from kbuild by d95dc2dabeb1 with local (Exim 4.92) (envelope-from ) id 1nJYwX-0008QR-2Z; Mon, 14 Feb 2022 10:50:53 +0000 Date: Mon, 14 Feb 2022 18:50:10 +0800 From: kernel test robot To: Marcelo Tosatti Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Thomas Gleixner Subject: kernel/time/hrtimer.c:276:20: warning: unused function 'is_migration_base' Message-ID: <202202141804.APyBFuLN-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 Marcelo, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 754e0b0e35608ed5206d6a67a791563c631cec07 commit: 81d741d3460ca422843ce0ec8351083f259c6166 hrtimer: Avoid unnecessary SMP function calls in clock_was_set() date: 6 months ago config: mips-randconfig-r033-20220213 (https://download.01.org/0day-ci/archive/20220214/202202141804.APyBFuLN-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project ea071884b0cc7210b3cc5fe858f0e892a779a23b) 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=81d741d3460ca422843ce0ec8351083f259c6166 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 81d741d3460ca422843ce0ec8351083f259c6166 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs/ kernel/time/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): kernel/time/hrtimer.c:120:21: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_REALTIME, ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:121:22: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_MONOTONIC, ^~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:122:21: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_BOOTTIME, ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:123:17: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_TAI, ^~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:1591:7: warning: variable 'expires_in_hardirq' set but not used bool expires_in_hardirq; ^ >> kernel/time/hrtimer.c:276:20: warning: unused function 'is_migration_base' static inline bool is_migration_base(struct hrtimer_clock_base ^ >> kernel/time/hrtimer.c:1830:20: warning: unused function '__hrtimer_peek_ahead_timers' static inline void __hrtimer_peek_ahead_timers(void) { } ^ fatal error: error in backend: Nested variants found in inline asm string: ' .set push .set mips64r2 .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 105, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif 1: ll $0, $1 or $0, $2 sc $0, $1 beqz $0, 1b .set pop ' clang-15: error: clang frontend command failed with exit code 70 (use -v to see invocation) clang version 15.0.0 (git://gitmirror/llvm_project ea071884b0cc7210b3cc5fe858f0e892a779a23b) Target: mips-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-ea071884b0/bin clang-15: note: diagnostic msg: Makefile arch block certs crypto drivers fs include init ipc kernel lib mm scripts security sound source usr virt vim +/is_migration_base +276 kernel/time/hrtimer.c c0a3132963db68 kernel/hrtimer.c Thomas Gleixner 2006-01-09 275 5d2295f3a93b04 kernel/time/hrtimer.c Sebastian Andrzej Siewior 2019-09-04 @276 static inline bool is_migration_base(struct hrtimer_clock_base *base) 5d2295f3a93b04 kernel/time/hrtimer.c Sebastian Andrzej Siewior 2019-09-04 277 { 5d2295f3a93b04 kernel/time/hrtimer.c Sebastian Andrzej Siewior 2019-09-04 278 return false; 5d2295f3a93b04 kernel/time/hrtimer.c Sebastian Andrzej Siewior 2019-09-04 279 } 5d2295f3a93b04 kernel/time/hrtimer.c Sebastian Andrzej Siewior 2019-09-04 280 :::::: The code at line 276 was first introduced by commit :::::: 5d2295f3a93b04986d069ebeaf5b07725f9096c1 hrtimer: Add a missing bracket and hide `migration_base' on !SMP :::::: TO: Sebastian Andrzej Siewior :::::: CC: Thomas Gleixner --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org