On Sun, Feb 23, 2020 at 6:52 PM <ethercf...@gmail.com> wrote: > > [Edited Message Follows] > > I tried to run CO-RE version's runqslower failed, the error info: > > libbpf: sched_wakeup is not found in vmlinux BTF > libbpf: failed to load object 'runqslower_bpf' > libbpf: failed to load BPF skeleton 'runqslower_bpf': -2 > failed to load BPF object: -2 > > ENV > > clang version 10.0.0-+rc2-1 > Target: x86_64-pc-linux-gnu > Thread model: posix > InstalledDir: /usr/bin > > > Linux Kernel: 5.6.0-rc2+ (commit 8eece07c011f88da0ccf4127fca9a4e4faaf58ae) > > CONFIG_CGROUP_BPF=y > CONFIG_BPF=y > CONFIG_BPF_SYSCALL=y > CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y > CONFIG_BPF_JIT_ALWAYS_ON=y > CONFIG_BPF_JIT_DEFAULT_ON=y > CONFIG_IPV6_SEG6_BPF=y > CONFIG_NETFILTER_XT_MATCH_BPF=m > CONFIG_BPFILTER=y > CONFIG_BPFILTER_UMH=m > CONFIG_NET_CLS_BPF=m > CONFIG_NET_ACT_BPF=m > CONFIG_BPF_JIT=y > CONFIG_BPF_STREAM_PARSER=y > CONFIG_LWTUNNEL_BPF=y > CONFIG_HAVE_EBPF_JIT=y > CONFIG_BPF_EVENTS=y > CONFIG_BPF_KPROBE_OVERRIDE=y > CONFIG_TEST_BPF=m > > > CONFIG_VIDEO_SONY_BTF_MPX=m > CONFIG_DEBUG_INFO_BTF=y > > > With gdb's help, I found the `btf__find_by_name_kind` return -ENOENT. > I printed all name: https://transfer.sh/ANKNs/log and found > btf_trace_sched_wakeup doesn't exist. > >
Hi! runqslower expects that kernel was built with BTF type info (which is enabled by CONFIG_DEBUG_INFO_BTF=y Kconfig option). Can you please re-build your kernel with BTF enabled and try again? > > -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#1810): https://lists.iovisor.org/g/iovisor-dev/message/1810 Mute This Topic: https://lists.iovisor.org/mt/71501560/21656 Group Owner: iovisor-dev+ow...@lists.iovisor.org Unsubscribe: https://lists.iovisor.org/g/iovisor-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
