Hi Masahiro, I love your patch! Perhaps something to improve: [auto build test WARNING on powerpc/next] [also build test WARNING on linus/master v5.12-rc3] [cannot apply to kbuild/for-next asm-generic/master next-20210317] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Masahiro-Yamada/kbuild-build-speed-improvement-of-CONFIG_TRIM_UNUSED_KSYMS/20210309-232117 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: x86_64-randconfig-a015-20210317 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8ef111222a3dd12a9175f69c3bff598c46e8bdf7) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/331032950fb793dce926a30d68897756d504c4a9 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Masahiro-Yamada/kbuild-build-speed-improvement-of-CONFIG_TRIM_UNUSED_KSYMS/20210309-232117 git checkout 331032950fb793dce926a30d68897756d504c4a9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/staging/comedi/drivers/cb_pcidas64.c:232:19: warning: unused function 'analog_trig_low_threshold_bits' [-Wunused-function] static inline u16 analog_trig_low_threshold_bits(u16 threshold) ^ >> drivers/staging/comedi/drivers/cb_pcidas64.c:383:28: warning: unused function 'dma_chain_flag_bits' [-Wunused-function] static inline unsigned int dma_chain_flag_bits(u16 prepost_bits) ^ 2 warnings generated. -- >> drivers/staging/rts5208/xd.c:34:19: warning: unused function 'xd_check_err_code' [-Wunused-function] static inline int xd_check_err_code(struct rtsx_chip *chip, u8 err_code) ^ 1 warning generated. -- >> drivers/video/fbdev/tridentfb.c:1127:20: warning: unused function 'shadowmode_off' [-Wunused-function] static inline void shadowmode_off(struct tridentfb_par *par) ^ 1 warning generated. -- >> drivers/video/fbdev/via/via-core.c:62:19: warning: unused function 'viafb_mmio_read' [-Wunused-function] static inline int viafb_mmio_read(int reg) ^ 1 warning generated. -- mm/compaction.c:56:27: warning: unused variable 'HPAGE_FRAG_CHECK_INTERVAL_MSEC' [-Wunused-const-variable] static const unsigned int HPAGE_FRAG_CHECK_INTERVAL_MSEC = 500; ^ >> mm/compaction.c:462:20: warning: unused function 'isolation_suitable' [-Wunused-function] static inline bool isolation_suitable(struct compact_control *cc, ^ >> mm/compaction.c:468:20: warning: unused function 'pageblock_skip_persistent' [-Wunused-function] static inline bool pageblock_skip_persistent(struct page *page) ^ >> mm/compaction.c:473:20: warning: unused function 'update_pageblock_skip' [-Wunused-function] static inline void update_pageblock_skip(struct compact_control *cc, ^ 4 warnings generated. -- >> mm/z3fold.c:287:37: warning: unused function 'handle_to_z3fold_header' [-Wunused-function] static inline struct z3fold_header *handle_to_z3fold_header(unsigned long h) ^ 1 warning generated. -- >> security/apparmor/file.c:150:20: warning: unused function 'is_deleted' [-Wunused-function] static inline bool is_deleted(struct dentry *dentry) ^ 1 warning generated. -- >> security/apparmor/label.c:1258:20: warning: unused function 'label_is_visible' [-Wunused-function] static inline bool label_is_visible(struct aa_profile *profile, ^ 1 warning generated. -- >> drivers/hwmon/sis5595.c:158:18: warning: unused function 'DIV_TO_REG' [-Wunused-function] static inline u8 DIV_TO_REG(int val) ^ 1 warning generated. -- >> drivers/mfd/max8925-core.c:472:40: warning: unused function 'irq_to_max8925' [-Wunused-function] static inline struct max8925_irq_data *irq_to_max8925(struct max8925_chip *chip, ^ 1 warning generated. -- >> drivers/misc/hpilo.c:395:19: warning: unused function 'is_device_reset' [-Wunused-function] static inline int is_device_reset(struct ilo_hwinfo *hw) ^ 1 warning generated. .. vim +/is_deleted +150 security/apparmor/file.c 6380bd8ddf613b John Johansen 2010-07-29 143 aebd873e8d3e34 John Johansen 2017-06-09 144 /** aebd873e8d3e34 John Johansen 2017-06-09 145 * is_deleted - test if a file has been completely unlinked aebd873e8d3e34 John Johansen 2017-06-09 146 * @dentry: dentry of file to test for deletion (NOT NULL) aebd873e8d3e34 John Johansen 2017-06-09 147 * e37986097ba63c Zou Wei 2020-04-28 148 * Returns: true if deleted else false aebd873e8d3e34 John Johansen 2017-06-09 149 */ aebd873e8d3e34 John Johansen 2017-06-09 @150 static inline bool is_deleted(struct dentry *dentry) aebd873e8d3e34 John Johansen 2017-06-09 151 { aebd873e8d3e34 John Johansen 2017-06-09 152 if (d_unlinked(dentry) && d_backing_inode(dentry)->i_nlink == 0) e37986097ba63c Zou Wei 2020-04-28 153 return true; e37986097ba63c Zou Wei 2020-04-28 154 return false; aebd873e8d3e34 John Johansen 2017-06-09 155 } aebd873e8d3e34 John Johansen 2017-06-09 156 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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