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Mark Rutland authored
We currently check for hwx->idx < 0 in armpmu_read and armpmu_del unnecessarily. The only case where hwc->idx < 0 is when armpmu_add fails, in which case the event's state is set to PERF_EVENT_STATE_INACTIVE. The perf core will not attempt to read from an event in PERF_EVENT_STATE_INACTIVE, and so the check in armpmu_read is unnecessary. Similarly, if perf core cannot add an event it will not attempt to delete it, so the WARN_ON in armpmu_del is unnecessary. This patch removes these two redundant checks. Signed-off-by:
Mark Rutland <mark.rutland@arm.com> Signed-off-by:
Will Deacon <will.deacon@arm.com>
8f3b90b5