diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/timer.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/timer.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/timer.c b/tools/testing/selftests/bpf/prog_tests/timer.c new file mode 100644 index 000000000000..d66687f1ee6a --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/timer.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2021 Facebook */ +#include <test_progs.h> +#include "timer.skel.h" +#include "timer_failure.skel.h" + +#define NUM_THR 8 + +static void *spin_lock_thread(void *arg) +{ + int i, err, prog_fd = *(int *)arg; + LIBBPF_OPTS(bpf_test_run_opts, topts); + + for (i = 0; i < 10000; i++) { + err = bpf_prog_test_run_opts(prog_fd, &topts); + if (!ASSERT_OK(err, "test_run_opts err") || + !ASSERT_OK(topts.retval, "test_run_opts retval")) + break; + } + + pthread_exit(arg); +} + +static int timer(struct timer *timer_skel) +{ + int i, err, prog_fd; + LIBBPF_OPTS(bpf_test_run_opts, topts); + pthread_t thread_id[NUM_THR]; + void *ret; + + err = timer__attach(timer_skel); + if (!ASSERT_OK(err, "timer_attach")) + return err; + + ASSERT_EQ(timer_skel->data->callback_check, 52, "callback_check1"); + ASSERT_EQ(timer_skel->data->callback2_check, 52, "callback2_check1"); + ASSERT_EQ(timer_skel->bss->pinned_callback_check, 0, "pinned_callback_check1"); + + prog_fd = bpf_program__fd(timer_skel->progs.test1); + err = bpf_prog_test_run_opts(prog_fd, &topts); + ASSERT_OK(err, "test_run"); + ASSERT_EQ(topts.retval, 0, "test_run"); + timer__detach(timer_skel); + + usleep(50); /* 10 usecs should be enough, but give it extra */ + /* check that timer_cb1() was executed 10+10 times */ + ASSERT_EQ(timer_skel->data->callback_check, 42, "callback_check2"); + ASSERT_EQ(timer_skel->data->callback2_check, 42, "callback2_check2"); + + /* check that timer_cb2() was executed twice */ + ASSERT_EQ(timer_skel->bss->bss_data, 10, "bss_data"); + + /* check that timer_cb3() was executed twice */ + ASSERT_EQ(timer_skel->bss->abs_data, 12, "abs_data"); + + /* check that timer_cb_pinned() was executed twice */ + ASSERT_EQ(timer_skel->bss->pinned_callback_check, 2, "pinned_callback_check"); + + /* check that there were no errors in timer execution */ + ASSERT_EQ(timer_skel->bss->err, 0, "err"); + + /* check that code paths completed */ + ASSERT_EQ(timer_skel->bss->ok, 1 | 2 | 4, "ok"); + + prog_fd = bpf_program__fd(timer_skel->progs.race); + for (i = 0; i < NUM_THR; i++) { + err = pthread_create(&thread_id[i], NULL, + &spin_lock_thread, &prog_fd); + if (!ASSERT_OK(err, "pthread_create")) + break; + } + + while (i) { + err = pthread_join(thread_id[--i], &ret); + if (ASSERT_OK(err, "pthread_join")) + ASSERT_EQ(ret, (void *)&prog_fd, "pthread_join"); + } + + return 0; +} + +/* TODO: use pid filtering */ +void serial_test_timer(void) +{ + struct timer *timer_skel = NULL; + int err; + + timer_skel = timer__open_and_load(); + if (!ASSERT_OK_PTR(timer_skel, "timer_skel_load")) + return; + + err = timer(timer_skel); + ASSERT_OK(err, "timer"); + timer__destroy(timer_skel); + + RUN_TESTS(timer_failure); +} |