diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/attach_probe.c | 10 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/perf_buffer.c | 8 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/send_signal.c | 33 |
3 files changed, 35 insertions, 16 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/attach_probe.c b/tools/testing/selftests/bpf/prog_tests/attach_probe.c index a4686395522c..5ecc267d98b0 100644 --- a/tools/testing/selftests/bpf/prog_tests/attach_probe.c +++ b/tools/testing/selftests/bpf/prog_tests/attach_probe.c @@ -21,12 +21,6 @@ ssize_t get_base_addr() { return -EINVAL; } -#ifdef __x86_64__ -#define SYS_KPROBE_NAME "__x64_sys_nanosleep" -#else -#define SYS_KPROBE_NAME "sys_nanosleep" -#endif - void test_attach_probe(void) { const char *kprobe_name = "kprobe/sys_nanosleep"; @@ -84,7 +78,7 @@ void test_attach_probe(void) kprobe_link = bpf_program__attach_kprobe(kprobe_prog, false /* retprobe */, - SYS_KPROBE_NAME); + SYS_NANOSLEEP_KPROBE_NAME); if (CHECK(IS_ERR(kprobe_link), "attach_kprobe", "err %ld\n", PTR_ERR(kprobe_link))) { kprobe_link = NULL; @@ -92,7 +86,7 @@ void test_attach_probe(void) } kretprobe_link = bpf_program__attach_kprobe(kretprobe_prog, true /* retprobe */, - SYS_KPROBE_NAME); + SYS_NANOSLEEP_KPROBE_NAME); if (CHECK(IS_ERR(kretprobe_link), "attach_kretprobe", "err %ld\n", PTR_ERR(kretprobe_link))) { kretprobe_link = NULL; diff --git a/tools/testing/selftests/bpf/prog_tests/perf_buffer.c b/tools/testing/selftests/bpf/prog_tests/perf_buffer.c index 3f1ef95865ff..3003fddc0613 100644 --- a/tools/testing/selftests/bpf/prog_tests/perf_buffer.c +++ b/tools/testing/selftests/bpf/prog_tests/perf_buffer.c @@ -5,12 +5,6 @@ #include <sys/socket.h> #include <test_progs.h> -#ifdef __x86_64__ -#define SYS_KPROBE_NAME "__x64_sys_nanosleep" -#else -#define SYS_KPROBE_NAME "sys_nanosleep" -#endif - static void on_sample(void *ctx, int cpu, void *data, __u32 size) { int cpu_data = *(int *)data, duration = 0; @@ -56,7 +50,7 @@ void test_perf_buffer(void) /* attach kprobe */ link = bpf_program__attach_kprobe(prog, false /* retprobe */, - SYS_KPROBE_NAME); + SYS_NANOSLEEP_KPROBE_NAME); if (CHECK(IS_ERR(link), "attach_kprobe", "err %ld\n", PTR_ERR(link))) goto out_close; diff --git a/tools/testing/selftests/bpf/prog_tests/send_signal.c b/tools/testing/selftests/bpf/prog_tests/send_signal.c index 67cea1686305..54218ee3c004 100644 --- a/tools/testing/selftests/bpf/prog_tests/send_signal.c +++ b/tools/testing/selftests/bpf/prog_tests/send_signal.c @@ -173,6 +173,18 @@ static int test_send_signal_tracepoint(void) return test_send_signal_common(&attr, BPF_PROG_TYPE_TRACEPOINT, "tracepoint"); } +static int test_send_signal_perf(void) +{ + struct perf_event_attr attr = { + .sample_period = 1, + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_CPU_CLOCK, + }; + + return test_send_signal_common(&attr, BPF_PROG_TYPE_PERF_EVENT, + "perf_sw_event"); +} + static int test_send_signal_nmi(void) { struct perf_event_attr attr = { @@ -181,8 +193,26 @@ static int test_send_signal_nmi(void) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES, }; + int pmu_fd; + + /* Some setups (e.g. virtual machines) might run with hardware + * perf events disabled. If this is the case, skip this test. + */ + pmu_fd = syscall(__NR_perf_event_open, &attr, 0 /* pid */, + -1 /* cpu */, -1 /* group_fd */, 0 /* flags */); + if (pmu_fd == -1) { + if (errno == ENOENT) { + printf("%s:SKIP:no PERF_COUNT_HW_CPU_CYCLES\n", + __func__); + return 0; + } + /* Let the test fail with a more informative message */ + } else { + close(pmu_fd); + } - return test_send_signal_common(&attr, BPF_PROG_TYPE_PERF_EVENT, "perf_event"); + return test_send_signal_common(&attr, BPF_PROG_TYPE_PERF_EVENT, + "perf_hw_event"); } void test_send_signal(void) @@ -190,6 +220,7 @@ void test_send_signal(void) int ret = 0; ret |= test_send_signal_tracepoint(); + ret |= test_send_signal_perf(); ret |= test_send_signal_nmi(); if (!ret) printf("test_send_signal:OK\n"); |