Kernel Device Driver Testing
Greg Kroah-Hartman
gregkh at linuxfoundation.org
Wed Nov 8 18:11:04 UTC 2017
On Wed, Nov 08, 2017 at 11:57:09AM -0500, tedheadster wrote:
> Greg,
> I had an idea about device drivers and self-tests. Create a compiler
> tag called __selftest which would function similar to __init. A device
> driver author could write directly into their kernel module self-test
> functions identified with this tag.
>
> Using the tag, the person compiling the kernel could:
>
> 1) Completely remove the code/data at compile-time.
> 2) Have the code run once at boot and then free the memory after a single use.
> 3) Leave the code in place and expose it to userland via the debugfs
> filesystem. Users could run the tests at their pleasure.
>
> It would be an opt-in system, so existing drivers could have the code
> added at your leisure.
>
> What are your thoughts on this idea?
Patches are always welcome, kernel development is not done by design
documents :)
Best of luck!
greg k-h
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