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 4B2F6C433F5 for ; Sun, 17 Apr 2022 08:55:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233739AbiDQI6X (ORCPT ); Sun, 17 Apr 2022 04:58:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45676 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231579AbiDQI6T (ORCPT ); Sun, 17 Apr 2022 04:58:19 -0400 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3161112A86 for ; Sun, 17 Apr 2022 01:55:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1650185745; x=1681721745; h=date:from:to:cc:subject:message-id:mime-version; bh=QWVnNNHAXypuLupBwBfNHFlyMGqpOdlkWIqhCvdiCUE=; b=B72WNjkALLHtr49Uq9Gbcsg786uxU1CXkRssGAMDj6LMPyMilMq5uSVL lWjfmqB6KeTwe7hvnTvjK/sVyHxk7C903KSI/RTq1K9/GAQSKqW2VsdLr 9C+kSRK3+ObFoVx0X2AC7i77sloQ5hp4DcJVkvQR8XPROA5ye597XxMKL R/CH5eHcEEtJRMLBxa+emVHOjhiHn20yWfzZ6NWReDhlpJuyuTApfogxx 5GkYJRIvau8du499gY9XCiwZl43cIZ7aV4HxXuwcLaUU/fTD9vDtaSvOS hjZ8HwZYsOgqjrHN3rkExotBS8GoAJKbB5ds+2YSHywaTwwbiFKjG3hV6 Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10318"; a="349822217" X-IronPort-AV: E=Sophos;i="5.90,267,1643702400"; d="scan'208";a="349822217" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Apr 2022 01:55:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,267,1643702400"; d="scan'208";a="509428228" Received: from lkp-server01.sh.intel.com (HELO 3abc53900bec) ([10.239.97.150]) by orsmga003.jf.intel.com with ESMTP; 17 Apr 2022 01:55:43 -0700 Received: from kbuild by 3abc53900bec with local (Exim 4.95) (envelope-from ) id 1ng0h4-0003oP-Le; Sun, 17 Apr 2022 08:55:42 +0000 Date: Sun, 17 Apr 2022 16:55:05 +0800 From: kernel test robot To: Thomas Gleixner Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: kernel/time/hrtimer.c:650:19: warning: unused function 'hrtimer_hres_active' Message-ID: <202204171614.pxPdcp17-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 Thomas, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: a2c29ccd9477861b16ddc02c411a6c9665250558 commit: 9482fd71dbb8f0d1a61821a83e467dc0a9d7b429 hrtimer: Use raw_cpu_ptr() in clock_was_set() date: 8 months ago config: mips-randconfig-r013-20220417 (https://download.01.org/0day-ci/archive/20220417/202204171614.pxPdcp17-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c6fdb1de47bd5f26868838c37fa9e8cc1ac484bf) 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=9482fd71dbb8f0d1a61821a83e467dc0a9d7b429 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 9482fd71dbb8f0d1a61821a83e467dc0a9d7b429 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs/ kernel/time/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): kernel/time/hrtimer.c:120:21: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_REALTIME, ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:121:22: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_MONOTONIC, ^~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:122:21: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_BOOTTIME, ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:123:17: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_TAI, ^~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:276:20: warning: unused function 'is_migration_base' static inline bool is_migration_base(struct hrtimer_clock_base ^ >> kernel/time/hrtimer.c:650:19: warning: unused function 'hrtimer_hres_active' static inline int hrtimer_hres_active(void) ^ kernel/time/hrtimer.c:1887:20: warning: unused function '__hrtimer_peek_ahead_timers' static inline void __hrtimer_peek_ahead_timers(void) { } ^ fatal error: error in backend: Nested variants found in inline asm string: ' .set push .set mips64r2 .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( 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 c6fdb1de47bd5f26868838c37fa9e8cc1ac484bf) Target: mips-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-c6fdb1de47/bin clang-15: note: diagnostic msg: Makefile arch drivers fs include kernel mm net nr_bisected scripts source usr vim +/hrtimer_hres_active +650 kernel/time/hrtimer.c 28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 649 28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 @650 static inline int hrtimer_hres_active(void) 28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 651 { 28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 652 return __hrtimer_hres_active(this_cpu_ptr(&hrtimer_bases)); 28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 653 } 28bfd18bf3daa5 Anna-Maria Gleixner 2017-12-21 654 :::::: The code at line 650 was first introduced by commit :::::: 28bfd18bf3daa5db8bb3422ea7138c8b7d2444ac hrtimer: Make the hrtimer_cpu_base::hres_active field unconditional, to simplify the code :::::: TO: Anna-Maria Gleixner :::::: CC: Ingo Molnar -- 0-DAY CI Kernel Test Service https://01.org/lkp