@@ -8,7 +8,7 @@ static void sigusr1_handler(int signum)
sigusr1_received++;
}
-static int test_send_signal_common(struct perf_event_attr *attr,
+static void test_send_signal_common(struct perf_event_attr *attr,
int prog_type,
const char *test_name)
{
@@ -23,13 +23,13 @@ static int test_send_signal_common(struct perf_event_attr *attr,
if (CHECK(pipe(pipe_c2p), test_name,
"pipe pipe_c2p error: %s\n", strerror(errno)))
- goto no_fork_done;
+ return;
if (CHECK(pipe(pipe_p2c), test_name,
"pipe pipe_p2c error: %s\n", strerror(errno))) {
close(pipe_c2p[0]);
close(pipe_c2p[1]);
- goto no_fork_done;
+ return;
}
pid = fork();
@@ -38,7 +38,7 @@ static int test_send_signal_common(struct perf_event_attr *attr,
close(pipe_c2p[1]);
close(pipe_p2c[0]);
close(pipe_p2c[1]);
- goto no_fork_done;
+ return;
}
if (pid == 0) {
@@ -125,7 +125,7 @@ static int test_send_signal_common(struct perf_event_attr *attr,
goto disable_pmu;
}
- err = CHECK(buf[0] != '2', test_name, "incorrect result\n");
+ CHECK(buf[0] != '2', test_name, "incorrect result\n");
/* notify child safe to exit */
write(pipe_p2c[1], buf, 1);
@@ -138,11 +138,9 @@ static int test_send_signal_common(struct perf_event_attr *attr,
close(pipe_c2p[0]);
close(pipe_p2c[1]);
wait(NULL);
-no_fork_done:
- return err;
}
-static int test_send_signal_tracepoint(void)
+static void test_send_signal_tracepoint(void)
{
const char *id_path = "/sys/kernel/debug/tracing/events/syscalls/sys_enter_nanosleep/id";
struct perf_event_attr attr = {
@@ -159,21 +157,21 @@ static int test_send_signal_tracepoint(void)
if (CHECK(efd < 0, "tracepoint",
"open syscalls/sys_enter_nanosleep/id failure: %s\n",
strerror(errno)))
- return -1;
+ return;
bytes = read(efd, buf, sizeof(buf));
close(efd);
if (CHECK(bytes <= 0 || bytes >= sizeof(buf), "tracepoint",
"read syscalls/sys_enter_nanosleep/id failure: %s\n",
strerror(errno)))
- return -1;
+ return;
attr.config = strtol(buf, NULL, 0);
- return test_send_signal_common(&attr, BPF_PROG_TYPE_TRACEPOINT, "tracepoint");
+ test_send_signal_common(&attr, BPF_PROG_TYPE_TRACEPOINT, "tracepoint");
}
-static int test_send_signal_perf(void)
+static void test_send_signal_perf(void)
{
struct perf_event_attr attr = {
.sample_period = 1,
@@ -181,11 +179,11 @@ static int test_send_signal_perf(void)
.config = PERF_COUNT_SW_CPU_CLOCK,
};
- return test_send_signal_common(&attr, BPF_PROG_TYPE_PERF_EVENT,
- "perf_sw_event");
+ test_send_signal_common(&attr, BPF_PROG_TYPE_PERF_EVENT,
+ "perf_sw_event");
}
-static int test_send_signal_nmi(void)
+static void test_send_signal_nmi(void)
{
struct perf_event_attr attr = {
.sample_freq = 50,
@@ -205,25 +203,23 @@ static int test_send_signal_nmi(void)
printf("%s:SKIP:no PERF_COUNT_HW_CPU_CYCLES\n",
__func__);
test__skip();
- return 0;
+ return;
}
/* 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_hw_event");
+ test_send_signal_common(&attr, BPF_PROG_TYPE_PERF_EVENT,
+ "perf_hw_event");
}
void test_send_signal(void)
{
- int ret = 0;
-
if (test__start_subtest("send_signal_tracepoint"))
- ret |= test_send_signal_tracepoint();
+ test_send_signal_tracepoint();
if (test__start_subtest("send_signal_perf"))
- ret |= test_send_signal_perf();
+ test_send_signal_perf();
if (test__start_subtest("send_signal_nmi"))
- ret |= test_send_signal_nmi();
+ test_send_signal_nmi();
}
send_signal test returns static codes from the subtests which nobody looks at, let's rely on the CHECK macros instead. Signed-off-by: Stanislav Fomichev <sdf@google.com> --- .../selftests/bpf/prog_tests/send_signal.c | 42 +++++++++---------- 1 file changed, 19 insertions(+), 23 deletions(-)