Constant solana_rbpf::helpers::BPF_KTIME_GETNS_IDX

pub const BPF_KTIME_GETNS_IDX: u32 = 5;

Index of helper bpf_ktime_getns(), equivalent to bpf_time_getns(), in Linux kernel, see https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/include/uapi/linux/bpf.h.