On 05/25/2015 07:28 PM, [email protected] wrote:
From: Martin Sperl <[email protected]>
per spi-master statistics accessible as:
/sys/class/spi_master/spi*/statistics/
per spi-device statistics accessible via:
/sys/class/spi_master/spi*/spi*.*/statistics/
The following statistics are exposed as separate "files" inside
these directories:
* messages number of spi_messages
* transfers number of spi_transfers
* bytes number of bytes transferred
* bytes_rx number of bytes transmitted
* bytes_tx number of bytes received
* bytes_histo transferred bytes/spi_transfer histogram
Having those kinds of stats in world readable files has serious security
implications as they can be used to implement side-channel attacks. They
should probably only be available in debugfs for root.
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