/* Check if this is a system NMI event */
static int uv_check_nmi(struct uv_hub_nmi_s *hub_nmi)
{
int cpu = smp_processor_id();
int nmi = 0;
local64_inc(&uv_nmi_count);
uv_cpu_nmi.queries++;
do {
nmi = atomic_read(&hub_nmi->in_nmi);
if (nmi)
break;
if (raw_spin_trylock(&hub_nmi->nmi_lock)) {
/* check hub MMR NMI flag */
if (uv_nmi_test_mmr(hub_nmi)) {
uv_set_in_nmi(cpu, hub_nmi);
nmi = 1;
break;
}
/* MMR NMI flag is clear */
raw_spin_unlock(&hub_nmi->nmi_lock);
} else {
/* wait a moment for the hub nmi locker to set flag */
cpu_relax();
udelay(uv_nmi_slave_delay);
/* re-check hub in_nmi flag */
nmi = atomic_read(&hub_nmi->in_nmi);
if (nmi)
break;
}
/* check if this BMC missed setting the MMR NMI flag */
if (!nmi) {
nmi = atomic_read(&uv_in_nmi);
if (nmi)
uv_set_in_nmi(cpu, hub_nmi);
}
} while (0);
if (!nmi)
local64_inc(&uv_nmi_misses);
return nmi;
}
static void cf_diag_stop(struct perf_event *event, int flags)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
struct cf_diag_csd *csd = this_cpu_ptr(&cf_diag_csd);
struct hw_perf_event *hwc = &event->hw;
debug_sprintf_event(cf_diag_dbg, 5,
"%s event %p cpu %d flags %#x hwc-state %#x\n",
__func__, event, event->cpu, flags, hwc->state);
/* Deactivate all counter sets */
ctr_set_multiple_stop(&cpuhw->state, hwc->config_base);
local64_inc(&event->count);
csd->used = cf_diag_getctr(csd->data, sizeof(csd->data),
event->hw.config_base);
if (cf_diag_diffctr(csd, event->hw.config_base))
cf_diag_push_sample(event, csd);
hwc->state |= PERF_HES_STOPPED;
}
