diff options
Diffstat (limited to 'tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c')
-rw-r--r-- | tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c b/tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c new file mode 100644 index 000000000000..3bbd5fcdfb18 --- /dev/null +++ b/tools/testing/selftests/sched_ext/select_cpu_dispatch_bad_dsq.bpf.c @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * A scheduler that validates the behavior of direct dispatching with a default + * select_cpu implementation. + * + * Copyright (c) 2023 Meta Platforms, Inc. and affiliates. + * Copyright (c) 2023 David Vernet <dvernet@meta.com> + * Copyright (c) 2023 Tejun Heo <tj@kernel.org> + */ + +#include <scx/common.bpf.h> + +char _license[] SEC("license") = "GPL"; + +UEI_DEFINE(uei); + +s32 BPF_STRUCT_OPS(select_cpu_dispatch_bad_dsq_select_cpu, struct task_struct *p, + s32 prev_cpu, u64 wake_flags) +{ + /* Dispatching to a random DSQ should fail. */ + scx_bpf_dispatch(p, 0xcafef00d, SCX_SLICE_DFL, 0); + + return prev_cpu; +} + +void BPF_STRUCT_OPS(select_cpu_dispatch_bad_dsq_exit, struct scx_exit_info *ei) +{ + UEI_RECORD(uei, ei); +} + +SEC(".struct_ops.link") +struct sched_ext_ops select_cpu_dispatch_bad_dsq_ops = { + .select_cpu = (void *) select_cpu_dispatch_bad_dsq_select_cpu, + .exit = (void *) select_cpu_dispatch_bad_dsq_exit, + .name = "select_cpu_dispatch_bad_dsq", + .timeout_ms = 1000U, +}; |