Hi Yang, Thank you for the patch! Yet something to improve: [auto build test ERROR on dm/for-next] [also build test ERROR on v5.12-rc2 next-20210309] [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/Yang-Li/dm-remove-unneeded-variable-sz/20210309-173431 base: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git for-next config: x86_64-randconfig-a011-20210308 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 820f508b08d7c94b2dd7847e9710d2bc36d3dd45) 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/a0feb390ae71f527ea5582a23afa1889bba31eab git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Yang-Li/dm-remove-unneeded-variable-sz/20210309-173431 git checkout a0feb390ae71f527ea5582a23afa1889bba31eab # 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 errors (new ones prefixed by >>): >> drivers/md/dm-ps-service-time.c:88:3: error: use of undeclared identifier 'sz' DMEMIT("0 "); ^ include/linux/device-mapper.h:588:22: note: expanded from macro 'DMEMIT' #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ ^ >> drivers/md/dm-ps-service-time.c:88:3: error: use of undeclared identifier 'sz' include/linux/device-mapper.h:588:30: note: expanded from macro 'DMEMIT' #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ ^ >> drivers/md/dm-ps-service-time.c:88:3: error: use of undeclared identifier 'sz' include/linux/device-mapper.h:589:29: note: expanded from macro 'DMEMIT' 0 : scnprintf(result + sz, maxlen - sz, x)) ^ >> drivers/md/dm-ps-service-time.c:88:3: error: use of undeclared identifier 'sz' include/linux/device-mapper.h:589:42: note: expanded from macro 'DMEMIT' 0 : scnprintf(result + sz, maxlen - sz, x)) ^ drivers/md/dm-ps-service-time.c:94:4: error: use of undeclared identifier 'sz' DMEMIT("%d %u ", atomic_read(&pi->in_flight_size), ^ include/linux/device-mapper.h:588:22: note: expanded from macro 'DMEMIT' #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ ^ drivers/md/dm-ps-service-time.c:94:4: error: use of undeclared identifier 'sz' include/linux/device-mapper.h:588:30: note: expanded from macro 'DMEMIT' #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ ^ drivers/md/dm-ps-service-time.c:94:4: error: use of undeclared identifier 'sz' include/linux/device-mapper.h:589:29: note: expanded from macro 'DMEMIT' 0 : scnprintf(result + sz, maxlen - sz, x)) ^ drivers/md/dm-ps-service-time.c:94:4: error: use of undeclared identifier 'sz' include/linux/device-mapper.h:589:42: note: expanded from macro 'DMEMIT' 0 : scnprintf(result + sz, maxlen - sz, x)) ^ drivers/md/dm-ps-service-time.c:98:4: error: use of undeclared identifier 'sz' DMEMIT("%u %u ", pi->repeat_count, ^ include/linux/device-mapper.h:588:22: note: expanded from macro 'DMEMIT' #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ ^ drivers/md/dm-ps-service-time.c:98:4: error: use of undeclared identifier 'sz' include/linux/device-mapper.h:588:30: note: expanded from macro 'DMEMIT' #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ ^ drivers/md/dm-ps-service-time.c:98:4: error: use of undeclared identifier 'sz' include/linux/device-mapper.h:589:29: note: expanded from macro 'DMEMIT' 0 : scnprintf(result + sz, maxlen - sz, x)) ^ drivers/md/dm-ps-service-time.c:98:4: error: use of undeclared identifier 'sz' include/linux/device-mapper.h:589:42: note: expanded from macro 'DMEMIT' 0 : scnprintf(result + sz, maxlen - sz, x)) ^ 12 errors generated. vim +/sz +88 drivers/md/dm-ps-service-time.c f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 81 f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 82 static int st_status(struct path_selector *ps, struct dm_path *path, f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 83 status_type_t type, char *result, unsigned maxlen) f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 84 { f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 85 struct path_info *pi; f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 86 f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 87 if (!path) f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 @88 DMEMIT("0 "); f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 89 else { f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 90 pi = path->pscontext; f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 91 f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 92 switch (type) { f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 93 case STATUSTYPE_INFO: f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 94 DMEMIT("%d %u ", atomic_read(&pi->in_flight_size), f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 95 pi->relative_throughput); f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 96 break; f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 97 case STATUSTYPE_TABLE: f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 98 DMEMIT("%u %u ", pi->repeat_count, f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 99 pi->relative_throughput); f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 100 break; f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 101 } f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 102 } f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 103 a0feb390ae71f5 drivers/md/dm-ps-service-time.c Yang Li 2021-03-09 104 return 0; f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 105 } f392ba889b0196 drivers/md/dm-service-time.c Kiyoshi Ueda 2009-06-22 106 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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