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X-IronPort-AV: E=McAfee;i="6200,9189,10214"; a="241867569" X-IronPort-AV: E=Sophos;i="5.88,254,1635231600"; d="scan'208";a="241867569" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jan 2022 10:10:58 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,254,1635231600"; d="scan'208";a="619890056" Received: from lkp-server01.sh.intel.com (HELO e357b3ef1427) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 01 Jan 2022 10:10:57 -0800 Received: from kbuild by e357b3ef1427 with local (Exim 4.92) (envelope-from ) id 1n3iqG-000CjQ-GR; Sat, 01 Jan 2022 18:10:56 +0000 Date: Sun, 2 Jan 2022 02:10:11 +0800 From: kernel test robot To: JianMin Liu Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [ammarfaizi2-block:google/android/kernel/common/android12-5.10-2021-12 8788/9999] kernel/sched/pelt.c:35:5: warning: no previous prototype for 'get_pelt_halflife' Message-ID: <202201020220.ooYV0tfD-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 JianMin, FYI, the error/warning still remains. tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android12-5.10-2021-12 head: 982761134d974e5ec66bd02c18df9b3e2d61dbb4 commit: 1efc36b815769cb8c7dae1d53373b190c017f5d1 [8788/9999] ANDROID: sched: add a helper function to change PELT half-life config: i386-buildonly-randconfig-r003-20211111 (https://download.01.org/0day-ci/archive/20220102/202201020220.ooYV0tfD-lkp@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/ammarfaizi2/linux-block/commit/1efc36b815769cb8c7dae1d53373b190c017f5d1 git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android12-5.10-2021-12 git checkout 1efc36b815769cb8c7dae1d53373b190c017f5d1 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash kernel/sched/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> kernel/sched/pelt.c:35:5: warning: no previous prototype for 'get_pelt_halflife' [-Wmissing-prototypes] 35 | int get_pelt_halflife(void) | ^~~~~~~~~~~~~~~~~ >> kernel/sched/pelt.c:68:5: warning: no previous prototype for 'set_pelt_halflife' [-Wmissing-prototypes] 68 | int set_pelt_halflife(int num) | ^~~~~~~~~~~~~~~~~ vim +/get_pelt_halflife +35 kernel/sched/pelt.c 34 > 35 int get_pelt_halflife(void) 36 { 37 return pelt_load_avg_period; 38 } 39 EXPORT_SYMBOL_GPL(get_pelt_halflife); 40 41 static int __set_pelt_halflife(void *data) 42 { 43 int rc = 0; 44 int num = *(int *)data; 45 46 switch (num) { 47 case PELT8_LOAD_AVG_PERIOD: 48 pelt_load_avg_period = PELT8_LOAD_AVG_PERIOD; 49 pelt_load_avg_max = PELT8_LOAD_AVG_MAX; 50 pelt_runnable_avg_yN_inv = pelt8_runnable_avg_yN_inv; 51 pr_info("PELT half life is set to %dms\n", num); 52 break; 53 case PELT32_LOAD_AVG_PERIOD: 54 pelt_load_avg_period = PELT32_LOAD_AVG_PERIOD; 55 pelt_load_avg_max = PELT32_LOAD_AVG_MAX; 56 pelt_runnable_avg_yN_inv = pelt32_runnable_avg_yN_inv; 57 pr_info("PELT half life is set to %dms\n", num); 58 break; 59 default: 60 rc = -EINVAL; 61 pr_err("Failed to set PELT half life to %dms, the current value is %dms\n", 62 num, pelt_load_avg_period); 63 } 64 65 return rc; 66 } 67 > 68 int set_pelt_halflife(int num) 69 { 70 return stop_machine(__set_pelt_halflife, &num, NULL); 71 } 72 EXPORT_SYMBOL_GPL(set_pelt_halflife); 73 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org