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dmaengine: Make dmatest.rst indeed reST compatible

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Make dmatest.rst indeed reST compatible.
Achieve this by fixing several formatting issues.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Andy Shevchenko 2018-03-26 14:50:26 +03:00 committed by Jonathan Corbet
parent a6cd7714c0
commit bc1287b9e5
1 changed files with 12 additions and 14 deletions
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26
Documentation/driver-api/dmaengine/dmatest.rst
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@ -15,6 +15,7 @@ Part 1 - How to build the test module
=====================================
The menuconfig contains an option that could be found by following path:
Device Drivers -> DMA Engine support -> DMA Test client
In the configuration file the option called CONFIG_DMATEST. The dmatest could
@ -23,11 +24,11 @@ be built as module or inside kernel. Let's consider those cases.
Part 2 - When dmatest is built as a module
==========================================
Example of usage: ::
Example of usage::
% modprobe dmatest channel=dma0chan0 timeout=2000 iterations=1 run=1
...or: ::
...or::
% modprobe dmatest
% echo dma0chan0 > /sys/module/dmatest/parameters/channel
@ -35,14 +36,12 @@ Example of usage: ::
% echo 1 > /sys/module/dmatest/parameters/iterations
% echo 1 > /sys/module/dmatest/parameters/run
...or on the kernel command line: ::
...or on the kernel command line::
dmatest.channel=dma0chan0 dmatest.timeout=2000 dmatest.iterations=1 dmatest.run=1
..hint:: available channel list could be extracted by running the following
command:
::
.. hint::
available channel list could be extracted by running the following command::
% ls -1 /sys/class/dma/
@ -64,12 +63,12 @@ before returning. For example, the following scripts wait for 42 tests
to complete before exiting. Note that if 'iterations' is set to 'infinite' then
waiting is disabled.
Example: ::
Example::
% modprobe dmatest run=1 iterations=42 wait=1
% modprobe -r dmatest
...or: ::
...or::
% modprobe dmatest run=1 iterations=42
% cat /sys/module/dmatest/parameters/wait
@ -81,7 +80,7 @@ Part 3 - When built-in in the kernel
The module parameters that is supplied to the kernel command line will be used
for the first performed test. After user gets a control, the test could be
re-run with the same or different parameters. For the details see the above
section "Part 2 - When dmatest is built as a module..."
section `Part 2 - When dmatest is built as a module`_.
In both cases the module parameters are used as the actual values for the test
case. You always could check them at run-time by running ::
@ -91,12 +90,11 @@ case. You always could check them at run-time by running ::
Part 4 - Gathering the test results
===================================
Test results are printed to the kernel log buffer with the format: ::
Test results are printed to the kernel log buffer with the format::
"dmatest: result <channel>: <test id>: '<error msg>' with src_off=<val> dst_off=<val> len=<val> (<err code>)"
Example of output: ::
Example of output::
% dmesg | tail -n 1
dmatest: result dma0chan0-copy0: #1: No errors with src_off=0x7bf dst_off=0x8ad len=0x3fea (0)
@ -106,7 +104,7 @@ the parens represents additional information, e.g. error code, error counter,
or status. A test thread also emits a summary line at completion listing the
number of tests executed, number that failed, and a result code.
Example: ::
Example::
% dmesg | tail -n 1
dmatest: dma0chan0-copy0: summary 1 test, 0 failures 1000 iops 100000 KB/s (0)