From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) (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 044807A for ; Mon, 14 Feb 2022 14:37:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1644849431; x=1676385431; h=date:from:to:cc:subject:message-id:mime-version; bh=6LOK4VVNnkh4NqshkBZRVXh25R9/25K4xECHUcNdZ8I=; b=b338rXFggUHZ6Epj9c1xP461PsIkEzMRoELCFUgahew4xBBt34wNmGox +PWAHJprDPEOn/KEJNz/4v51Y4N4jXZxI1nDm2QZcOmQ4JGumhUp+Qqnz 1nREyQ29aPZbCPRQXckBcrRbFu48giRI8uWDFKBZlgV6s1NUEfURaLav5 GbOJo2BYoPlgkc3nI0pmlUGBwrJEMxOngW2xtexxS9grJ5zNbwxCLHXC/ QfiNVyVP5b9Gy5diTKi+8v8WW3jEzOsnK05KrgjTigAWiSzgj3qWxoVHy 5pgp7AsbzsL2Pn8EuIot5g3/V7fdaWfof8WM9AavCPa2kzKqzj7ei/ZdO A==; X-IronPort-AV: E=McAfee;i="6200,9189,10257"; a="249849537" X-IronPort-AV: E=Sophos;i="5.88,368,1635231600"; d="scan'208";a="249849537" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Feb 2022 06:37:10 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,368,1635231600"; d="scan'208";a="495683768" Received: from lkp-server01.sh.intel.com (HELO d95dc2dabeb1) ([10.239.97.150]) by orsmga006.jf.intel.com with ESMTP; 14 Feb 2022 06:37:09 -0800 Received: from kbuild by d95dc2dabeb1 with local (Exim 4.92) (envelope-from ) id 1nJcTU-0008ed-CQ; Mon, 14 Feb 2022 14:37:08 +0000 Date: Mon, 14 Feb 2022 22:36:38 +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: <202202142217.xTcn7mgj-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Hi Thomas, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 754e0b0e35608ed5206d6a67a791563c631cec07 commit: 9482fd71dbb8f0d1a61821a83e467dc0a9d7b429 hrtimer: Use raw_cpu_ptr() in clock_was_set() date: 6 months ago config: mips-randconfig-r033-20220213 (https://download.01.org/0day-ci/archive/20220214/202202142217.xTcn7mgj-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=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:1648:7: 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: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 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 +/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, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org