static int xenoprof_setup(void)
{
int ret;
if ( (ret = map_xenoprof_buffer(MAX_XENOPROF_SAMPLES)) )
return ret;
if ( (ret = bind_virq()) ) {
release_buffer_array(xenoprof_buf, nbuf);
return ret;
}
if (xenoprof_is_primary) {
/* Define dom0 as an active domain if not done yet */
if (!active_defined) {
domid_t domid;
ret = HYPERVISOR_xenoprof_op(
XENOPROF_reset_active_list, NULL);
if (ret)
goto err;
domid = 0;
ret = HYPERVISOR_xenoprof_op(
XENOPROF_set_active, &domid);
if (ret)
goto err;
active_defined = 1;
}
if (oprofile_backtrace_depth > 0) {
ret = HYPERVISOR_xenoprof_op(XENOPROF_set_backtrace,
&oprofile_backtrace_depth);
if (ret)
oprofile_backtrace_depth = 0;
}
ret = HYPERVISOR_xenoprof_op(XENOPROF_reserve_counters, NULL);
if (ret)
goto err;
xenoprof_arch_counter();
ret = HYPERVISOR_xenoprof_op(XENOPROF_setup_events, NULL);
if (ret)
goto err;
}
ret = HYPERVISOR_xenoprof_op(XENOPROF_enable_virq, NULL);
if (ret)
goto err;
xenoprof_enabled = 1;
return 0;
err:
unbind_virq();
release_buffer_array(xenoprof_buf, nbuf);
return ret;
}
static int xenoprof_setup(void)
{
int ret;
int i;
ret = bind_virq();
if (ret)
return ret;
if (is_primary) {
struct xenoprof_counter counter;
/* Define dom0 as an active domain if not done yet */
if (!active_defined) {
domid_t domid;
ret = HYPERVISOR_xenoprof_op(XENOPROF_reset_active_list, NULL);
if (ret)
goto err;
domid = 0;
ret = HYPERVISOR_xenoprof_op(XENOPROF_set_active, &domid);
if (ret)
goto err;
active_defined = 1;
}
ret = HYPERVISOR_xenoprof_op(XENOPROF_reserve_counters, NULL);
if (ret)
goto err;
for (i=0; i<num_events; i++) {
counter.ind = i;
counter.count = (uint64_t)counter_config[i].count;
counter.enabled = (uint32_t)counter_config[i].enabled;
counter.event = (uint32_t)counter_config[i].event;
counter.kernel = (uint32_t)counter_config[i].kernel;
counter.user = (uint32_t)counter_config[i].user;
counter.unit_mask = (uint64_t)counter_config[i].unit_mask;
HYPERVISOR_xenoprof_op(XENOPROF_counter,
&counter);
}
ret = HYPERVISOR_xenoprof_op(XENOPROF_setup_events, NULL);
if (ret)
goto err;
}
ret = HYPERVISOR_xenoprof_op(XENOPROF_enable_virq, NULL);
if (ret)
goto err;
xenoprof_enabled = 1;
return 0;
err:
unbind_virq();
return ret;
}
static void xenoprof_shutdown(void)
{
xenoprof_enabled = 0;
HYPERVISOR_xenoprof_op(XENOPROF_disable_virq, NULL);
if (is_primary) {
HYPERVISOR_xenoprof_op(XENOPROF_release_counters, NULL);
active_defined = 0;
}
unbind_virq();
}
static int bind_virq(void)
{
unsigned int i;
int result;
for_each_online_cpu(i) {
result = bind_virq_to_irqaction(VIRQ_XENOPROF, i, &ovf_action);
if (result < 0) {
unbind_virq();
return result;
}
ovf_irq[i] = result;
}
return 0;
}
static void xenoprof_shutdown(void)
{
xenoprof_enabled = 0;
WARN_ON(HYPERVISOR_xenoprof_op(XENOPROF_disable_virq, NULL));
if (xenoprof_is_primary) {
WARN_ON(HYPERVISOR_xenoprof_op(XENOPROF_release_counters,
NULL));
active_defined = 0;
}
unbind_virq();
xenoprof_arch_unmap_shared_buffer(&shared_buffer);
if (xenoprof_is_primary)
unmap_passive_list();
release_buffer_array(xenoprof_buf, nbuf);
}
static int bind_virq(void)
{
int i, result;
for_each_cpu(i) {
result = bind_virq_to_irqhandler(VIRQ_XENOPROF,
i,
xenoprof_ovf_interrupt,
SA_INTERRUPT,
"xenoprof",
NULL);
if (result < 0) {
unbind_virq();
return result;
}
ovf_irq[i] = result;
}
return 0;
}
