driver-api/dmaengine/dmatest.rst

33     % modprobe dmatest timeout=2000 iterations=1 channel=dma0chan0 run=1
41     % echo 1 > /sys/module/dmatest/parameters/run
45     dmatest.timeout=2000 dmatest.iterations=1 dmatest.channel=dma0chan0 dmatest.run=1
55     % echo 1 > /sys/module/dmatest/parameters/run
65   begin execution when the run parameter is set to 1.
74 pending thread is started once run is to 1.
80     % cat /sys/module/dmatest/parameters/run
82 To wait for test completion userpace can poll 'run' until it is false, or use
84 initialization to pause until a test run has completed, while reading
92     % modprobe dmatest run=1 iterations=42 wait=1
97     % modprobe dmatest run=1 iterations=42
106 re-run with the same or different parameters. For the details see the above
110 case. You always could check them at run-time by running ::
146 Channels are required to be configured prior to starting the test run.
147 Attempting to run the test without configuring the channels will fail.
151     % echo 1 > /sys/module/dmatest/parameters/run
202 Note: Channels will have to be configured for each test run as channel configurations do not
203 carry across to the next test run.
208 Channels can be freed by setting run to 0.
216     % echo 0 > /sys/module/dmatest/parameters/run
221 channel is requested after completing a successful test run.