Add support for model specific methods to write to the PMU event counter. This will be used by CCI500/550 PMUs.
Cc: Punit Agrawal <[email protected]> Cc: Mark Rutland <[email protected]> Signed-off-by: Suzuki K. Poulose <[email protected]> --- drivers/bus/arm-cci.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c index 91a9d5d..88b612f 100644 --- a/drivers/bus/arm-cci.c +++ b/drivers/bus/arm-cci.c @@ -126,6 +126,7 @@ struct cci_pmu_model { struct event_range event_ranges[CCI_IF_MAX]; int (*validate_hw_event)(struct cci_pmu *, unsigned long); int (*get_event_idx)(struct cci_pmu *, struct cci_pmu_hw_events *, unsigned long); + void (*write_counter)(struct cci_pmu *, u32, int); }; static struct cci_pmu_model cci_pmu_models[]; @@ -829,16 +830,25 @@ static u32 pmu_read_counter(struct perf_event *event) return value; } +static void __pmu_write_counter(struct cci_pmu *cci_pmu, u32 value, int idx) +{ + pmu_write_register(cci_pmu, value, idx, CCI_PMU_CNTR); +} + static void pmu_write_counter(struct perf_event *event, u32 value) { struct cci_pmu *cci_pmu = to_cci_pmu(event->pmu); struct hw_perf_event *hw_counter = &event->hw; int idx = hw_counter->idx; - if (unlikely(!pmu_is_valid_counter(cci_pmu, idx))) + if (unlikely(!pmu_is_valid_counter(cci_pmu, idx))) { dev_err(&cci_pmu->plat_device->dev, "Invalid CCI PMU counter %d\n", idx); + return; + } + if (cci_pmu->model->write_counter) + cci_pmu->model->write_counter(cci_pmu, value, idx); else - pmu_write_register(cci_pmu, value, idx, CCI_PMU_CNTR); + __pmu_write_counter(cci_pmu, value, idx); } static u64 pmu_event_update(struct perf_event *event) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
