How to read and interpret /dev/cpu_dma_latency?
Issue
-
Reading
/dev/cpu_dma_latencyfrom userspace / user mode is not clarified in kernel sources in 'Documentation/power/pm_qos_interface.txt' -
reading
/dev/cpu_dma_latencyprints gibberish
# cat /dev/cpu_dma_latency
�5w
Environment
Red Hat Enterprise Linux 7
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