s390/qdio: track time of last data IRQ for each device
We currently track the time of the most recent QDIO Adapter Interrupt. This is a system-wide timestamp (as such interrupts are not bound to one specific qdio device). If interrupt processing stalls on one device but is functional for a different device, the timestamp continues to be updated and is of no help for problem diagnosis. So for debugging purposes also track the time of the last Data IRQ on a per-device level. Collect this data in the legacy non-AI path as well. Signed-off-by:Julian Wiedmann <jwi@linux.ibm.com> Reviewed-by:
Benjamin Block <bblock@linux.ibm.com> Signed-off-by:
Vasily Gorbik <gor@linux.ibm.com>
parent
954d6235
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