[PATCH bpf-next 0/2] bpf: tail calls in sleepable programs

[Jiri Olsa <jolsa@kernel.org>]

hi,
this patchset allows sleepable programs to use tail calls.

At the moment we need to have separate sleepable uprobe program
to retrieve user space data and pass it to complex program with
tail calls. It'd be great if the program with tail calls could
be sleepable and do the data retrieval directly.

thanks,
jirka


---
Jiri Olsa (2):
      bpf: Allow sleepable programs to use tail calls
      selftests/bpf: Add test for sleepable program tailcalls

 include/linux/bpf.h                                    |  1 +
 kernel/bpf/core.c                                      |  4 +++-
 kernel/bpf/verifier.c                                  |  1 +
 tools/testing/selftests/bpf/prog_tests/tailcalls.c     | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tools/testing/selftests/bpf/progs/tailcall_sleepable.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 123 insertions(+), 1 deletion(-)
 create mode 100644 tools/testing/selftests/bpf/progs/tailcall_sleepable.c