1*4d495c6eSApple OSS Distributions #include <sys/sysctl.h>
2*4d495c6eSApple OSS Distributions #include <darwintest.h>
3*4d495c6eSApple OSS Distributions #include <darwintest_utils.h>
4*4d495c6eSApple OSS Distributions #include <spawn.h>
5*4d495c6eSApple OSS Distributions #include <pthread.h>
6*4d495c6eSApple OSS Distributions
7*4d495c6eSApple OSS Distributions T_GLOBAL_META(
8*4d495c6eSApple OSS Distributions T_META_NAMESPACE("xnu.sync"),
9*4d495c6eSApple OSS Distributions T_META_RUN_CONCURRENTLY(true),
10*4d495c6eSApple OSS Distributions T_META_CHECK_LEAKS(false),
11*4d495c6eSApple OSS Distributions T_META_RADAR_COMPONENT_NAME("xnu"),
12*4d495c6eSApple OSS Distributions T_META_RADAR_COMPONENT_VERSION("locks"));
13*4d495c6eSApple OSS Distributions
14*4d495c6eSApple OSS Distributions static int64_t
run_sysctl_test(const char * t,int64_t value)15*4d495c6eSApple OSS Distributions run_sysctl_test(const char *t, int64_t value)
16*4d495c6eSApple OSS Distributions {
17*4d495c6eSApple OSS Distributions char name[1024];
18*4d495c6eSApple OSS Distributions int64_t result = 0;
19*4d495c6eSApple OSS Distributions size_t s = sizeof(value);
20*4d495c6eSApple OSS Distributions int rc;
21*4d495c6eSApple OSS Distributions
22*4d495c6eSApple OSS Distributions snprintf(name, sizeof(name), "debug.test.%s", t);
23*4d495c6eSApple OSS Distributions rc = sysctlbyname(name, &result, &s, &value, s);
24*4d495c6eSApple OSS Distributions T_ASSERT_POSIX_SUCCESS(rc, "sysctlbyname(%s)", t);
25*4d495c6eSApple OSS Distributions return result;
26*4d495c6eSApple OSS Distributions }
27*4d495c6eSApple OSS Distributions
28*4d495c6eSApple OSS Distributions T_DECL(hw_lck_ticket_allow_invalid, "hw_lck_ticket_allow_invalid",
29*4d495c6eSApple OSS Distributions T_META_RUN_CONCURRENTLY(false), T_META_TAG_VM_NOT_ELIGIBLE)
30*4d495c6eSApple OSS Distributions {
31*4d495c6eSApple OSS Distributions T_EXPECT_EQ(1ll, run_sysctl_test("hw_lck_ticket_allow_invalid", 0), "test succeeded");
32*4d495c6eSApple OSS Distributions }
33*4d495c6eSApple OSS Distributions
34*4d495c6eSApple OSS Distributions T_DECL(smr_hash_basic, "smr_hash basic test", T_META_TAG_VM_PREFERRED)
35*4d495c6eSApple OSS Distributions {
36*4d495c6eSApple OSS Distributions T_EXPECT_EQ(1ll, run_sysctl_test("smr_hash_basic", 0), "test succeeded");
37*4d495c6eSApple OSS Distributions }
38*4d495c6eSApple OSS Distributions
39*4d495c6eSApple OSS Distributions T_DECL(smr_shash_basic, "smr_shash basic test", T_META_TAG_VM_PREFERRED)
40*4d495c6eSApple OSS Distributions {
41*4d495c6eSApple OSS Distributions T_EXPECT_EQ(1ll, run_sysctl_test("smr_shash_basic", 0), "test succeeded");
42*4d495c6eSApple OSS Distributions }
43*4d495c6eSApple OSS Distributions
44*4d495c6eSApple OSS Distributions static void
clpc_set_core_count(int ncpus)45*4d495c6eSApple OSS Distributions clpc_set_core_count(int ncpus)
46*4d495c6eSApple OSS Distributions {
47*4d495c6eSApple OSS Distributions #if __arm64__
48*4d495c6eSApple OSS Distributions char arg[20];
49*4d495c6eSApple OSS Distributions char *const clpcctrl_args[] = {
50*4d495c6eSApple OSS Distributions "/usr/local/bin/clpcctrl",
51*4d495c6eSApple OSS Distributions "-c",
52*4d495c6eSApple OSS Distributions arg,
53*4d495c6eSApple OSS Distributions NULL,
54*4d495c6eSApple OSS Distributions };
55*4d495c6eSApple OSS Distributions pid_t pid;
56*4d495c6eSApple OSS Distributions int rc;
57*4d495c6eSApple OSS Distributions
58*4d495c6eSApple OSS Distributions snprintf(arg, sizeof(arg), "%d", ncpus);
59*4d495c6eSApple OSS Distributions rc = posix_spawn(&pid, clpcctrl_args[0], NULL, NULL, clpcctrl_args, NULL);
60*4d495c6eSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_SUCCESS(rc, "posix_spawn");
61*4d495c6eSApple OSS Distributions waitpid(pid, &rc, 0);
62*4d495c6eSApple OSS Distributions #else
63*4d495c6eSApple OSS Distributions (void)ncpus;
64*4d495c6eSApple OSS Distributions #endif
65*4d495c6eSApple OSS Distributions }
66*4d495c6eSApple OSS Distributions
67*4d495c6eSApple OSS Distributions static void *
toggle_cpus_thread(void * donep)68*4d495c6eSApple OSS Distributions toggle_cpus_thread(void *donep)
69*4d495c6eSApple OSS Distributions {
70*4d495c6eSApple OSS Distributions int ncpus = dt_ncpu();
71*4d495c6eSApple OSS Distributions
72*4d495c6eSApple OSS Distributions do {
73*4d495c6eSApple OSS Distributions usleep(200 * 1000);
74*4d495c6eSApple OSS Distributions clpc_set_core_count(ncpus - 1);
75*4d495c6eSApple OSS Distributions usleep(200 * 1000);
76*4d495c6eSApple OSS Distributions clpc_set_core_count(ncpus);
77*4d495c6eSApple OSS Distributions } while (!*(bool *)donep);
78*4d495c6eSApple OSS Distributions
79*4d495c6eSApple OSS Distributions return NULL;
80*4d495c6eSApple OSS Distributions }
81*4d495c6eSApple OSS Distributions
82*4d495c6eSApple OSS Distributions T_DECL(smr_sleepable_stress, "smr_sleepable_stress_test",
83*4d495c6eSApple OSS Distributions T_META_RUN_CONCURRENTLY(false), T_META_TAG_VM_NOT_ELIGIBLE)
84*4d495c6eSApple OSS Distributions {
85*4d495c6eSApple OSS Distributions uint32_t secs = 4;
86*4d495c6eSApple OSS Distributions pthread_t pth;
87*4d495c6eSApple OSS Distributions bool done = false;
88*4d495c6eSApple OSS Distributions int rc;
89*4d495c6eSApple OSS Distributions
90*4d495c6eSApple OSS Distributions rc = pthread_create(&pth, NULL, toggle_cpus_thread, &done);
91*4d495c6eSApple OSS Distributions T_ASSERT_POSIX_SUCCESS(rc, "pthread_create");
92*4d495c6eSApple OSS Distributions
93*4d495c6eSApple OSS Distributions T_EXPECT_EQ(1ll, run_sysctl_test("smr_sleepable_stress", secs), "test succeeded");
94*4d495c6eSApple OSS Distributions
95*4d495c6eSApple OSS Distributions done = true;
96*4d495c6eSApple OSS Distributions pthread_join(pth, NULL);
97*4d495c6eSApple OSS Distributions }
98