I'v read this blog post https://facebookmicrosites.github.io/bpf/blog/2020/02/19/bpf-portability-and-co-re.html
And want to apply this technique to my program: > > extern u32 LINUX_KERNEL_VERSION __kconfig; extern u32 CONFIG_HZ __kconfig; > u64 utime_ns; if (LINUX_KERNEL_VERSION >= KERNEL_VERSION( 4 , 11 , 0 )) > utime_ns = BPF_CORE_READ(task, utime); else /* convert jiffies to > nanoseconds */ utime_ns = BPF_CORE_READ(task, utime) * ( 1000000000U L / > CONFIG_HZ); -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#1974): https://lists.iovisor.org/g/iovisor-dev/message/1974 Mute This Topic: https://lists.iovisor.org/mt/81401199/21656 Group Owner: [email protected] Unsubscribe: https://lists.iovisor.org/g/iovisor-dev/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
