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selftests/bpf: Replace CHECK with ASSERT_* macros in send_signal.c

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Replace CHECK in send_signal.c with ASSERT_* macros as
ASSERT_* macros are generally preferred. There is no
funcitonality change.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210817190918.3186400-1-yhs@fb.com
This commit is contained in:
Yonghong Song 2021-08-17 12:09:18 -07:00 committed by Andrii Nakryiko
parent 87bb11ccfe
commit 6f6cc42645
1 changed files with 20 additions and 25 deletions
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45
tools/testing/selftests/bpf/prog_tests/send_signal.c
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@ -10,29 +10,25 @@ static void sigusr1_handler(int signum)
}
static void test_send_signal_common(struct perf_event_attr *attr,
bool signal_thread,
const char *test_name)
bool signal_thread)
{
struct test_send_signal_kern *skel;
int pipe_c2p[2], pipe_p2c[2];
int err = -1, pmu_fd = -1;
__u32 duration = 0;
char buf[256];
pid_t pid;
if (CHECK(pipe(pipe_c2p), test_name,
"pipe pipe_c2p error: %s\n", strerror(errno)))
if (!ASSERT_OK(pipe(pipe_c2p), "pipe_c2p"))
return;
if (CHECK(pipe(pipe_p2c), test_name,
"pipe pipe_p2c error: %s\n", strerror(errno))) {
if (!ASSERT_OK(pipe(pipe_p2c), "pipe_p2c")) {
close(pipe_c2p[0]);
close(pipe_c2p[1]);
return;
}
pid = fork();
if (CHECK(pid < 0, test_name, "fork error: %s\n", strerror(errno))) {
if (!ASSERT_GE(pid, 0, "fork")) {
close(pipe_c2p[0]);
close(pipe_c2p[1]);
close(pipe_p2c[0]);
@ -48,19 +44,19 @@ static void test_send_signal_common(struct perf_event_attr *attr,
close(pipe_p2c[1]); /* close write */
/* notify parent signal handler is installed */
CHECK(write(pipe_c2p[1], buf, 1) != 1, "pipe_write", "err %d\n", -errno);
ASSERT_EQ(write(pipe_c2p[1], buf, 1), 1, "pipe_write");
/* make sure parent enabled bpf program to send_signal */
CHECK(read(pipe_p2c[0], buf, 1) != 1, "pipe_read", "err %d\n", -errno);
ASSERT_EQ(read(pipe_p2c[0], buf, 1), 1, "pipe_read");
/* wait a little for signal handler */
sleep(1);
buf[0] = sigusr1_received ? '2' : '0';
CHECK(write(pipe_c2p[1], buf, 1) != 1, "pipe_write", "err %d\n", -errno);
ASSERT_EQ(write(pipe_c2p[1], buf, 1), 1, "pipe_write");
/* wait for parent notification and exit */
CHECK(read(pipe_p2c[0], buf, 1) != 1, "pipe_read", "err %d\n", -errno);
ASSERT_EQ(read(pipe_p2c[0], buf, 1), 1, "pipe_read");
close(pipe_c2p[1]);
close(pipe_p2c[0]);
@ -71,20 +67,19 @@ static void test_send_signal_common(struct perf_event_attr *attr,
close(pipe_p2c[0]); /* close read */
skel = test_send_signal_kern__open_and_load();
if (CHECK(!skel, "skel_open_and_load", "skeleton open_and_load failed\n"))
if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
goto skel_open_load_failure;
if (!attr) {
err = test_send_signal_kern__attach(skel);
if (CHECK(err, "skel_attach", "skeleton attach failed\n")) {
if (!ASSERT_OK(err, "skel_attach")) {
err = -1;
goto destroy_skel;
}
} else {
pmu_fd = syscall(__NR_perf_event_open, attr, pid, -1,
-1 /* group id */, 0 /* flags */);
if (CHECK(pmu_fd < 0, test_name, "perf_event_open error: %s\n",
strerror(errno))) {
if (!ASSERT_GE(pmu_fd, 0, "perf_event_open")) {
err = -1;
goto destroy_skel;
}
@ -96,7 +91,7 @@ static void test_send_signal_common(struct perf_event_attr *attr,
}
/* wait until child signal handler installed */
CHECK(read(pipe_c2p[0], buf, 1) != 1, "pipe_read", "err %d\n", -errno);
ASSERT_EQ(read(pipe_c2p[0], buf, 1), 1, "pipe_read");
/* trigger the bpf send_signal */
skel->bss->pid = pid;
@ -104,21 +99,21 @@ static void test_send_signal_common(struct perf_event_attr *attr,
skel->bss->signal_thread = signal_thread;
/* notify child that bpf program can send_signal now */
CHECK(write(pipe_p2c[1], buf, 1) != 1, "pipe_write", "err %d\n", -errno);
ASSERT_EQ(write(pipe_p2c[1], buf, 1), 1, "pipe_write");
/* wait for result */
err = read(pipe_c2p[0], buf, 1);
if (CHECK(err < 0, test_name, "reading pipe error: %s\n", strerror(errno)))
if (!ASSERT_GE(err, 0, "reading pipe"))
goto disable_pmu;
if (CHECK(err == 0, test_name, "reading pipe error: size 0\n")) {
if (!ASSERT_GT(err, 0, "reading pipe error: size 0")) {
err = -1;
goto disable_pmu;
}
CHECK(buf[0] != '2', test_name, "incorrect result\n");
ASSERT_EQ(buf[0], '2', "incorrect result");
/* notify child safe to exit */
CHECK(write(pipe_p2c[1], buf, 1) != 1, "pipe_write", "err %d\n", -errno);
ASSERT_EQ(write(pipe_p2c[1], buf, 1), 1, "pipe_write");
disable_pmu:
close(pmu_fd);
@ -132,7 +127,7 @@ skel_open_load_failure:
static void test_send_signal_tracepoint(bool signal_thread)
{
test_send_signal_common(NULL, signal_thread, "tracepoint");
test_send_signal_common(NULL, signal_thread);
}
static void test_send_signal_perf(bool signal_thread)
@ -143,7 +138,7 @@ static void test_send_signal_perf(bool signal_thread)
.config = PERF_COUNT_SW_CPU_CLOCK,
};
test_send_signal_common(&attr, signal_thread, "perf_sw_event");
test_send_signal_common(&attr, signal_thread);
}
static void test_send_signal_nmi(bool signal_thread)
@ -172,7 +167,7 @@ static void test_send_signal_nmi(bool signal_thread)
close(pmu_fd);
}
test_send_signal_common(&attr, signal_thread, "perf_hw_event");
test_send_signal_common(&attr, signal_thread);
}
void test_send_signal(void)