/* Performance monitoring unit for s390x */
static struct pmu cpumf_pmu = {
+ .task_ctx_nr = perf_sw_context,
+ .capabilities = PERF_PMU_CAP_NO_INTERRUPT,
.pmu_enable = cpumf_pmu_enable,
.pmu_disable = cpumf_pmu_disable,
.event_init = cpumf_pmu_event_init,
static int cpumf_pmu_notifier(struct notifier_block *self, unsigned long action,
void *hcpu)
{
- unsigned int cpu = (long) hcpu;
int flags;
switch (action & ~CPU_TASKS_FROZEN) {
case CPU_ONLINE:
case CPU_DOWN_FAILED:
flags = PMC_INIT;
- smp_call_function_single(cpu, setup_pmc_cpu, &flags, 1);
+ local_irq_disable();
+ setup_pmc_cpu(&flags);
+ local_irq_enable();
break;
case CPU_DOWN_PREPARE:
flags = PMC_RELEASE;
- smp_call_function_single(cpu, setup_pmc_cpu, &flags, 1);
+ local_irq_disable();
+ setup_pmc_cpu(&flags);
+ local_irq_enable();
break;
default:
break;
goto out;
}
- /* The CPU measurement counter facility does not have overflow
- * interrupts to do sampling. Sampling must be provided by
- * external means, for example, by timers.
- */
- cpumf_pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT;
-
cpumf_pmu.attr_groups = cpumf_cf_event_group();
rc = perf_pmu_register(&cpumf_pmu, "cpum_cf", PERF_TYPE_RAW);
if (rc) {