tree: https://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next.git for-4.18/block head: 657e770d4d6e3b03c3d4b96e427b30d6f766e2e2 commit: b5c78af7bc40baa7dd71d1b5fccb78ece59812ba [6/13] blkcg: add generic throttling mechanism config: sparc-defconfig (attached as .config) compiler: sparc-linux-gcc (GCC) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout b5c78af7bc40baa7dd71d1b5fccb78ece59812ba # save the attached .config to linux build tree make.cross ARCH=sparc All errors (new ones prefixed by >>): In file included from include/linux/blkdev.h:21:0, from include/linux/blk-cgroup.h:21, from include/linux/tracehook.h:54, from arch/sparc/kernel/ptrace_32.c:24: include/linux/bio.h:556:55: error: 'struct blkcg_gq' declared inside parameter list will not be visible outside of this definition or declaration [-Werror] static int bio_associate_blkg(struct bio *bio, struct blkcg_gq *blkg) { return 0; } ^~~~~~~~ In file included from include/linux/tracehook.h:54:0, from arch/sparc/kernel/ptrace_32.c:24: >> include/linux/blk-cgroup.h:832:13: error: 'blkcg_schedule_throttle' defined but not used [-Werror=unused-function] static void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay) { } ^~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/blk-cgroup.h:831:13: error: 'blkcg_add_delay' defined but not used [-Werror=unused-function] static void blkcg_add_delay(struct blkcg_gq *blkg, u64 now, u64 delta) { } ^~~~~~~~~~~~~~~ In file included from include/linux/blkdev.h:21:0, from include/linux/blk-cgroup.h:21, from include/linux/tracehook.h:54, from arch/sparc/kernel/ptrace_32.c:24: >> include/linux/bio.h:556:12: error: 'bio_associate_blkg' defined but not used [-Werror=unused-function] static int bio_associate_blkg(struct bio *bio, struct blkcg_gq *blkg) { return 0; } ^~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/blkcg_schedule_throttle +832 include/linux/blk-cgroup.h 828 829 static inline bool blkcg_bio_issue_check(struct request_queue *q, 830 struct bio *bio) { return true; } > 831 static void blkcg_add_delay(struct blkcg_gq *blkg, u64 now, u64 delta) { } > 832 static void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay) { } 833 static inline void blkcg_maybe_throttle_current(void) {} 834 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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