tree: https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/batch head: b81b17307e02f8e6d4abf87e7ec2d7e5aea1e0b5 commit: 847fb4eb93cf46ad827ba84404d2c9d6998ea67f [19/27] bpf: Attach multi trampoline with ftrace_ops config: riscv-buildonly-randconfig-r006-20210826 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1076082a0d97bd5c16a25ee7cf3dbb6ee4b5a9fe) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/commit/?id=847fb4eb93cf46ad827ba84404d2c9d6998ea67f git remote add jolsa-perf https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git git fetch --no-tags jolsa-perf bpf/batch git checkout 847fb4eb93cf46ad827ba84404d2c9d6998ea67f # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=riscv SHELL=/bin/bash drivers/net/ethernet/hisilicon/hns/ 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 drivers/net/ethernet/hisilicon/hns/hns_ethtool.c:6: In file included from include/linux/etherdevice.h:21: In file included from include/linux/netdevice.h:41: In file included from include/net/netprio_cgroup.h:11: In file included from include/linux/cgroup.h:28: In file included from include/linux/cgroup-defs.h:22: In file included from include/linux/bpf-cgroup.h:5: In file included from include/linux/bpf.h:26: include/linux/ftrace.h:353:41: warning: declaration of 'struct ftrace_ops' will not be visible outside of this function [-Wvisibility] int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:353:5: warning: no previous prototype for function 'register_ftrace_direct_multi' [-Wmissing-prototypes] int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:353:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ static include/linux/ftrace.h:357:43: warning: declaration of 'struct ftrace_ops' will not be visible outside of this function [-Wvisibility] int unregister_ftrace_direct_multi(struct ftrace_ops *ops) ^ include/linux/ftrace.h:357:5: warning: no previous prototype for function 'unregister_ftrace_direct_multi' [-Wmissing-prototypes] int unregister_ftrace_direct_multi(struct ftrace_ops *ops) ^ include/linux/ftrace.h:357:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int unregister_ftrace_direct_multi(struct ftrace_ops *ops) ^ static include/linux/ftrace.h:361:39: warning: declaration of 'struct ftrace_ops' will not be visible outside of this function [-Wvisibility] int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:361:5: warning: no previous prototype for function 'modify_ftrace_direct_multi' [-Wmissing-prototypes] int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:361:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ static In file included from drivers/net/ethernet/hisilicon/hns/hns_ethtool.c:6: In file included from include/linux/etherdevice.h:21: In file included from include/linux/netdevice.h:41: In file included from include/net/netprio_cgroup.h:11: In file included from include/linux/cgroup.h:28: In file included from include/linux/cgroup-defs.h:22: In file included from include/linux/bpf-cgroup.h:5: >> include/linux/bpf.h:707:20: error: field has incomplete type 'struct ftrace_ops' struct ftrace_ops ops; ^ include/linux/bpf.h:707:9: note: forward declaration of 'struct ftrace_ops' struct ftrace_ops ops; ^ 6 warnings and 1 error generated. -- In file included from drivers/net/ethernet/hisilicon/hns/hns_enet.c:8: In file included from include/linux/etherdevice.h:21: In file included from include/linux/netdevice.h:41: In file included from include/net/netprio_cgroup.h:11: In file included from include/linux/cgroup.h:28: In file included from include/linux/cgroup-defs.h:22: In file included from include/linux/bpf-cgroup.h:5: In file included from include/linux/bpf.h:26: include/linux/ftrace.h:353:41: warning: declaration of 'struct ftrace_ops' will not be visible outside of this function [-Wvisibility] int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:353:5: warning: no previous prototype for function 'register_ftrace_direct_multi' [-Wmissing-prototypes] int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:353:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ static include/linux/ftrace.h:357:43: warning: declaration of 'struct ftrace_ops' will not be visible outside of this function [-Wvisibility] int unregister_ftrace_direct_multi(struct ftrace_ops *ops) ^ include/linux/ftrace.h:357:5: warning: no previous prototype for function 'unregister_ftrace_direct_multi' [-Wmissing-prototypes] int unregister_ftrace_direct_multi(struct ftrace_ops *ops) ^ include/linux/ftrace.h:357:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int unregister_ftrace_direct_multi(struct ftrace_ops *ops) ^ static include/linux/ftrace.h:361:39: warning: declaration of 'struct ftrace_ops' will not be visible outside of this function [-Wvisibility] int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:361:5: warning: no previous prototype for function 'modify_ftrace_direct_multi' [-Wmissing-prototypes] int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:361:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ static In file included from drivers/net/ethernet/hisilicon/hns/hns_enet.c:8: In file included from include/linux/etherdevice.h:21: In file included from include/linux/netdevice.h:41: In file included from include/net/netprio_cgroup.h:11: In file included from include/linux/cgroup.h:28: In file included from include/linux/cgroup-defs.h:22: In file included from include/linux/bpf-cgroup.h:5: >> include/linux/bpf.h:707:20: error: field has incomplete type 'struct ftrace_ops' struct ftrace_ops ops; ^ include/linux/bpf.h:707:9: note: forward declaration of 'struct ftrace_ops' struct ftrace_ops ops; ^ drivers/net/ethernet/hisilicon/hns/hns_enet.c:2355:38: warning: shift count >= width of type [-Wshift-count-overflow] if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) ^~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK' #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) ^ ~~~ 7 warnings and 1 error generated. -- In file included from drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c:12: In file included from include/linux/netdevice.h:41: In file included from include/net/netprio_cgroup.h:11: In file included from include/linux/cgroup.h:28: In file included from include/linux/cgroup-defs.h:22: In file included from include/linux/bpf-cgroup.h:5: In file included from include/linux/bpf.h:26: include/linux/ftrace.h:353:41: warning: declaration of 'struct ftrace_ops' will not be visible outside of this function [-Wvisibility] int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:353:5: warning: no previous prototype for function 'register_ftrace_direct_multi' [-Wmissing-prototypes] int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:353:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ static include/linux/ftrace.h:357:43: warning: declaration of 'struct ftrace_ops' will not be visible outside of this function [-Wvisibility] int unregister_ftrace_direct_multi(struct ftrace_ops *ops) ^ include/linux/ftrace.h:357:5: warning: no previous prototype for function 'unregister_ftrace_direct_multi' [-Wmissing-prototypes] int unregister_ftrace_direct_multi(struct ftrace_ops *ops) ^ include/linux/ftrace.h:357:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int unregister_ftrace_direct_multi(struct ftrace_ops *ops) ^ static include/linux/ftrace.h:361:39: warning: declaration of 'struct ftrace_ops' will not be visible outside of this function [-Wvisibility] int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:361:5: warning: no previous prototype for function 'modify_ftrace_direct_multi' [-Wmissing-prototypes] int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ include/linux/ftrace.h:361:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr) ^ static In file included from drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c:12: In file included from include/linux/netdevice.h:41: In file included from include/net/netprio_cgroup.h:11: In file included from include/linux/cgroup.h:28: In file included from include/linux/cgroup-defs.h:22: In file included from include/linux/bpf-cgroup.h:5: >> include/linux/bpf.h:707:20: error: field has incomplete type 'struct ftrace_ops' struct ftrace_ops ops; ^ include/linux/bpf.h:707:9: note: forward declaration of 'struct ftrace_ops' struct ftrace_ops ops; ^ drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c:200:48: warning: shift count >= width of type [-Wshift-count-overflow] if (!dma_set_mask_and_coherent(dsaf_dev->dev, DMA_BIT_MASK(64ULL))) ^~~~~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK' #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) ^ ~~~ 7 warnings and 1 error generated. vim +707 include/linux/bpf.h 701 702 struct bpf_trampoline_multi { 703 struct bpf_trampoline main; 704 struct list_head list; 705 u32 *ids; 706 u32 ids_cnt; > 707 struct ftrace_ops ops; 708 int tr_cnt; 709 struct bpf_trampoline *tr[]; 710 }; 711 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org