diff options
| author | David Vernet <void@manifault.com> | 2023-01-25 19:47:32 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-01-25 21:25:57 +0300 |
| commit | 1e12d3ef47d228e4e7d30f9bc5e6744ede90319c (patch) | |
| tree | 920700d659b11adaaa5812ac4639cc006d7f4de6 /tools/testing/selftests/bpf | |
| parent | 2514a31241e1e9067d379e0fbdb60e4bc2bf4659 (diff) | |
| download | linux-1e12d3ef47d228e4e7d30f9bc5e6744ede90319c.tar.xz | |
bpf: Allow BPF_PROG_TYPE_STRUCT_OPS programs to be sleepable
BPF struct_ops programs currently cannot be marked as sleepable. This
need not be the case -- struct_ops programs can be sleepable, and e.g.
invoke kfuncs that export the KF_SLEEPABLE flag. So as to allow future
struct_ops programs to invoke such kfuncs, this patch updates the
verifier to allow struct_ops programs to be sleepable. A follow-on patch
will add support to libbpf for specifying struct_ops.s as a sleepable
struct_ops program, and then another patch will add testcases to the
dummy_st_ops selftest suite which test sleepable struct_ops behavior.
Signed-off-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20230125164735.785732-2-void@manifault.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf')
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/sleepable.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/verifier/sleepable.c b/tools/testing/selftests/bpf/verifier/sleepable.c index bea0daef908a..1f0d2bdc673f 100644 --- a/tools/testing/selftests/bpf/verifier/sleepable.c +++ b/tools/testing/selftests/bpf/verifier/sleepable.c @@ -85,7 +85,7 @@ .expected_attach_type = BPF_TRACE_RAW_TP, .kfunc = "sched_switch", .result = REJECT, - .errstr = "Only fentry/fexit/fmod_ret, lsm, iter and uprobe programs can be sleepable", + .errstr = "Only fentry/fexit/fmod_ret, lsm, iter, uprobe, and struct_ops programs can be sleepable", .flags = BPF_F_SLEEPABLE, .runs = -1, }, |