uint64_t
atomic_dec_64_nv(volatile uint64_t *addr)
{
return (atomic_add_64_nv(addr, -1));
}
static void
splat_atomic_work(void *priv)
{
atomic_priv_t *ap;
atomic_op_t op;
int i;
ap = (atomic_priv_t *)priv;
ASSERT(ap->ap_magic == SPLAT_ATOMIC_TEST_MAGIC);
spin_lock(&ap->ap_lock);
op = ap->ap_op;
wake_up(&ap->ap_waitq);
spin_unlock(&ap->ap_lock);
splat_vprint(ap->ap_file, SPLAT_ATOMIC_TEST1_NAME,
"Thread %d successfully started: %lu/%lu\n", op,
(long unsigned)ap->ap_atomic,
(long unsigned)ap->ap_atomic_exited);
for (i = 0; i < SPLAT_ATOMIC_INIT_VALUE / 10; i++) {
/* Periodically sleep to mix up the ordering */
if ((i % (SPLAT_ATOMIC_INIT_VALUE / 100)) == 0) {
splat_vprint(ap->ap_file, SPLAT_ATOMIC_TEST1_NAME,
"Thread %d sleeping: %lu/%lu\n", op,
(long unsigned)ap->ap_atomic,
(long unsigned)ap->ap_atomic_exited);
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(HZ / 100);
}
switch (op) {
case SPLAT_ATOMIC_INC_64:
atomic_inc_64(&ap->ap_atomic);
break;
case SPLAT_ATOMIC_DEC_64:
atomic_dec_64(&ap->ap_atomic);
break;
case SPLAT_ATOMIC_ADD_64:
atomic_add_64(&ap->ap_atomic, 3);
break;
case SPLAT_ATOMIC_SUB_64:
atomic_sub_64(&ap->ap_atomic, 3);
break;
case SPLAT_ATOMIC_ADD_64_NV:
atomic_add_64_nv(&ap->ap_atomic, 5);
break;
case SPLAT_ATOMIC_SUB_64_NV:
atomic_sub_64_nv(&ap->ap_atomic, 5);
break;
default:
PANIC("Undefined op %d\n", op);
}
}
atomic_inc_64(&ap->ap_atomic_exited);
splat_vprint(ap->ap_file, SPLAT_ATOMIC_TEST1_NAME,
"Thread %d successfully exited: %lu/%lu\n", op,
(long unsigned)ap->ap_atomic,
(long unsigned)ap->ap_atomic_exited);
wake_up(&ap->ap_waitq);
thread_exit();
}
template<typename T> static T add_nv(T *ptr, T val) { return atomic_add_64_nv(ptr, val); }