On Wed, Feb 24, 2021 at 12:24 PM <jwk...@umich.edu> wrote: > > Hello, > > I was wondering if BCC implements the new BPF feature (as of kernel 5.10) to > allow BPF programs to utilize both BPF tail calls and BPF subprograms. This > behavior is described near the end of this section of the BPF reference > guide. I am interested in this functionality to extend a BPF program in order > to reach the limit of 8KB of stack space.
You can use bpf tail calls today. You can look at bcc/tests/cc/test_prog_table.cc for an example. bcc does not support subprogram yet. In the future we do plan to be more libbpf compatible so we can use those features. BTW, the stack limit is 512 bytes not 8KB. > > Thanks, > > Jake > -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#1963): https://lists.iovisor.org/g/iovisor-dev/message/1963 Mute This Topic: https://lists.iovisor.org/mt/80886632/21656 Group Owner: iovisor-dev+ow...@lists.iovisor.org Unsubscribe: https://lists.iovisor.org/g/iovisor-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
