diff --git a/tools/testing/selftests/sched_ext/Makefile b/tools/testing/selftests/sched_ext/Makefile index a95fa2a1adad9..1fd1b99de9195 100644 --- a/tools/testing/selftests/sched_ext/Makefile +++ b/tools/testing/selftests/sched_ext/Makefile @@ -161,6 +161,7 @@ endef all_test_bpfprogs := $(foreach prog,$(wildcard *.bpf.c),$(INCLUDE_DIR)/$(patsubst %.c,%.skel.h,$(prog))) auto-test-targets := \ + create_dsq \ enq_last_no_enq_fails \ enq_select_cpu_fails \ ddsp_bogus_dsq_fail \ diff --git a/tools/testing/selftests/sched_ext/create_dsq.bpf.c b/tools/testing/selftests/sched_ext/create_dsq.bpf.c new file mode 100644 index 0000000000000..23f79ed343f02 --- /dev/null +++ b/tools/testing/selftests/sched_ext/create_dsq.bpf.c @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Create and destroy DSQs in a loop. + * + * Copyright (c) 2024 Meta Platforms, Inc. and affiliates. + * Copyright (c) 2024 David Vernet + */ + +#include + +char _license[] SEC("license") = "GPL"; + +void BPF_STRUCT_OPS(create_dsq_exit_task, struct task_struct *p, + struct scx_exit_task_args *args) +{ + scx_bpf_destroy_dsq(p->pid); +} + +s32 BPF_STRUCT_OPS_SLEEPABLE(create_dsq_init_task, struct task_struct *p, + struct scx_init_task_args *args) +{ + s32 err; + + err = scx_bpf_create_dsq(p->pid, -1); + if (err) + scx_bpf_error("Failed to create DSQ for %s[%d]", + p->comm, p->pid); + + return err; +} + +s32 BPF_STRUCT_OPS_SLEEPABLE(create_dsq_init) +{ + u32 i; + s32 err; + + bpf_for(i, 0, 1024) { + err = scx_bpf_create_dsq(i, -1); + if (err) { + scx_bpf_error("Failed to create DSQ %d", i); + return 0; + } + } + + bpf_for(i, 0, 1024) { + scx_bpf_destroy_dsq(i); + } + + return 0; +} + +SEC(".struct_ops.link") +struct sched_ext_ops create_dsq_ops = { + .init_task = create_dsq_init_task, + .exit_task = create_dsq_exit_task, + .init = create_dsq_init, + .name = "create_dsq", +}; diff --git a/tools/testing/selftests/sched_ext/create_dsq.c b/tools/testing/selftests/sched_ext/create_dsq.c new file mode 100644 index 0000000000000..fa946d9146d4d --- /dev/null +++ b/tools/testing/selftests/sched_ext/create_dsq.c @@ -0,0 +1,57 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2024 Meta Platforms, Inc. and affiliates. + * Copyright (c) 2024 David Vernet + */ +#include +#include +#include +#include +#include "create_dsq.bpf.skel.h" +#include "scx_test.h" + +static enum scx_test_status setup(void **ctx) +{ + struct create_dsq *skel; + + skel = create_dsq__open_and_load(); + if (!skel) { + SCX_ERR("Failed to open and load skel"); + return SCX_TEST_FAIL; + } + *ctx = skel; + + return SCX_TEST_PASS; +} + +static enum scx_test_status run(void *ctx) +{ + struct create_dsq *skel = ctx; + struct bpf_link *link; + + link = bpf_map__attach_struct_ops(skel->maps.create_dsq_ops); + if (!link) { + SCX_ERR("Failed to attach scheduler"); + return SCX_TEST_FAIL; + } + + bpf_link__destroy(link); + + return SCX_TEST_PASS; +} + +static void cleanup(void *ctx) +{ + struct create_dsq *skel = ctx; + + create_dsq__destroy(skel); +} + +struct scx_test create_dsq = { + .name = "create_dsq", + .description = "Create and destroy a dsq in a loop", + .setup = setup, + .run = run, + .cleanup = cleanup, +}; +REGISTER_SCX_TEST(&create_dsq)