Hi Daniel, [auto build test ERROR on net-next/master]
url: https://github.com/0day-ci/linux/commits/Daniel-Borkmann/bpf-trace-add-BPF_F_CURRENT_CPU-flag-for-bpf_perf_event_output/20160418-063147 config: m68k-allyesconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=m68k All errors (new ones prefixed by >>): net/core/filter.c: In function 'bpf_skb_event_output': >> net/core/filter.c:1599:2: error: implicit declaration of function >> 'perf_fetch_caller_regs' [-Werror=implicit-function-declaration] perf_fetch_caller_regs(regs); ^ cc1: some warnings being treated as errors vim +/perf_fetch_caller_regs +1599 net/core/filter.c 1593 static DEFINE_PER_CPU(struct pt_regs, bpf_pt_regs); 1594 1595 static u64 bpf_skb_event_output(u64 r1, u64 r2, u64 flags, u64 r4, u64 size) 1596 { 1597 struct pt_regs *regs = this_cpu_ptr(&bpf_pt_regs); 1598 > 1599 perf_fetch_caller_regs(regs); 1600 1601 return bpf_perf_event_output((long)regs, r2, flags, r4, size); 1602 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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