Messages in this thread Patch in this message | | | From | Vince Weaver <> | Date | Sun, 15 Jun 2014 02:01:58 -0400 (EDT) | Subject | [PATCH 2/6] blackfin,perf: Use common PMU interrupt disabled code |
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Transition to using the new generic PERF_PMU_CAP_NO_INTERRUPT method for failing a sampling event when no PMU interrupt is available.
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
diff --git a/arch/blackfin/kernel/perf_event.c b/arch/blackfin/kernel/perf_event.c index 974e554..ea20320 100644 --- a/arch/blackfin/kernel/perf_event.c +++ b/arch/blackfin/kernel/perf_event.c @@ -389,14 +389,6 @@ static int bfin_pmu_event_init(struct perf_event *event) if (attr->exclude_hv || attr->exclude_idle) return -EPERM; - /* - * All of the on-chip counters are "limited", in that they have - * no interrupts, and are therefore unable to do sampling without - * further work and timer assistance. - */ - if (hwc->sample_period) - return -EINVAL; - ret = 0; switch (attr->type) { case PERF_TYPE_RAW: @@ -490,6 +482,13 @@ static int __init bfin_pmu_init(void) { int ret; + /* + * All of the on-chip counters are "limited", in that they have + * no interrupts, and are therefore unable to do sampling without + * further work and timer assistance. + */ + pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT; + ret = perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW); if (!ret) perf_cpu_notifier(bfin_pmu_notifier);
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