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#include <splat-ctl.h>
#define KZT_SUBSYSTEM_TIME 0x0800
#define KZT_TIME_NAME "time"
#define KZT_TIME_DESC "Kernel Time Tests"
#define KZT_TIME_TEST1_ID 0x0801
#define KZT_TIME_TEST1_NAME "time1"
#define KZT_TIME_TEST1_DESC "HZ Test"
#define KZT_TIME_TEST2_ID 0x0802
#define KZT_TIME_TEST2_NAME "time2"
#define KZT_TIME_TEST2_DESC "Monotonic Test"
static int
kzt_time_test1(struct file *file, void *arg)
{
int myhz = hz;
kzt_vprint(file, KZT_TIME_TEST1_NAME, "hz is %d\n", myhz);
return 0;
}
static int
kzt_time_test2(struct file *file, void *arg)
{
hrtime_t tm1, tm2;
int i;
tm1 = gethrtime();
kzt_vprint(file, KZT_TIME_TEST2_NAME, "time is %lld\n", tm1);
for(i = 0; i < 100; i++) {
tm2 = gethrtime();
kzt_vprint(file, KZT_TIME_TEST2_NAME, "time is %lld\n", tm2);
if(tm1 > tm2) {
kzt_print(file, "%s: gethrtime() is not giving monotonically increasing values\n", KZT_TIME_TEST2_NAME);
return 1;
}
tm1 = tm2;
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(10);
}
return 0;
}
kzt_subsystem_t *
kzt_time_init(void)
{
kzt_subsystem_t *sub;
sub = kmalloc(sizeof(*sub), GFP_KERNEL);
if (sub == NULL)
return NULL;
memset(sub, 0, sizeof(*sub));
strncpy(sub->desc.name, KZT_TIME_NAME, KZT_NAME_SIZE);
strncpy(sub->desc.desc, KZT_TIME_DESC, KZT_DESC_SIZE);
INIT_LIST_HEAD(&sub->subsystem_list);
INIT_LIST_HEAD(&sub->test_list);
spin_lock_init(&sub->test_lock);
sub->desc.id = KZT_SUBSYSTEM_TIME;
KZT_TEST_INIT(sub, KZT_TIME_TEST1_NAME, KZT_TIME_TEST1_DESC,
KZT_TIME_TEST1_ID, kzt_time_test1);
KZT_TEST_INIT(sub, KZT_TIME_TEST2_NAME, KZT_TIME_TEST2_DESC,
KZT_TIME_TEST2_ID, kzt_time_test2);
return sub;
}
void
kzt_time_fini(kzt_subsystem_t *sub)
{
ASSERT(sub);
KZT_TEST_FINI(sub, KZT_TIME_TEST2_ID);
KZT_TEST_FINI(sub, KZT_TIME_TEST1_ID);
kfree(sub);
}
int
kzt_time_id(void)
{
return KZT_SUBSYSTEM_TIME;
}
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