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Arm FEAT_SPE_FDS adds the ability to filter on the data source of a packet using another 64-bits of event filtering control. As the existing perf_event_attr::configN fields are all used up for SPE PMU, an additional field is needed. Add a new 'config4' field. Reviewed-by: Leo Yan <leo.yan@arm.com> Tested-by: Leo Yan <leo.yan@arm.com> Reviewed-by: Ian Rogers <irogers@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: James Clark <james.clark@linaro.org> Signed-off-by: Will Deacon <will@kernel.org>