Hi Muneendra, Thank you for the patch! Yet something to improve: [auto build test ERROR on scsi/for-next] [also build test ERROR on mkp-scsi/for-next cgroup/for-next v5.12-rc1 next-20210304] [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/Muneendra/blkcg-Support-to-track-FC-storage-blk-io-traffic/20210304-203516 base: https://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git for-next config: sparc-defconfig (attached as .config) compiler: sparc-linux-gcc (GCC) 9.3.0 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 # https://github.com/0day-ci/linux/commit/4f325831dc87fa3065b51e0875a58a6c27027dba git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Muneendra/blkcg-Support-to-track-FC-storage-blk-io-traffic/20210304-203516 git checkout 4f325831dc87fa3065b51e0875a58a6c27027dba # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from include/linux/memcontrol.h:13, from include/linux/tracehook.h:50, from arch/sparc/kernel/signal_32.c:22: >> include/linux/cgroup.h:748:23: error: 'cgroup_get_from_id' defined but not used [-Werror=unused-function] 748 | static struct cgroup *cgroup_get_from_id(u64 id) | ^~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/cgroup_get_from_id +748 include/linux/cgroup.h 747 > 748 static struct cgroup *cgroup_get_from_id(u64 id) 749 { 750 return NULL; 751 } 752 #endif /* !CONFIG_CGROUPS */ 753 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org