Merge branch 'Enable struct_ops programs to be sleepable'
David Vernet says:
====================
This is part 4 of https://lore.kernel.org/bpf/
20230123232228.646563-1-void@manifault.com/
Part 3: https://lore.kernel.org/all/
20230125050359.339273-1-void@manifault.com/
Part 2: https://lore.kernel.org/all/
20230124160802.1122124-1-void@manifault.com/
Changelog:
----------
v3 -> v4:
- Fix accidental typo in name of dummy_st_ops introduced in v2, moving
it back to dummy_st_ops from dummy_st_ops_success. Should fix s390x
testruns.
v2 -> v3:
- Don't call a KF_SLEEPABLE kfunc from the dummy_st_ops testsuite, and
remove the newly added bpf_kfunc_call_test_sleepable() test kfunc
(Martin).
- Include vmlinux.h from progs/dummy_st_ops_success.c (previously
progs/dummy_st_ops.c) rather than manually defining
struct bpf_dummy_ops_state and struct bpf_dummy_ops.
(Martin).
- Fix a typo added to prog_tests/dummy_st_ops.c in a previous version:
s/trace_dummy_st_ops_success__open/trace_dummy_st_ops__open.
v1 -> v2:
- Add support for specifying sleepable struct_ops programs with
struct_ops.s in libbpf (Alexei).
- Move failure test case into new dummy_st_ops_fail.c prog file.
- Update test_dummy_sleepable() to use struct_ops.s instead of manually
setting prog flags. Also remove open_load_skel() helper which is no
longer needed.
- Fix verifier tests to expect new sleepable prog failure message.
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>