[PATCH v3] prime_mmap_coherency: Add return error tests for prime sync ioctl

[Tiago Vignatti]

On 03/18/2016 03:11 PM, Daniel Vetter wrote:
> On Fri, Mar 18, 2016 at 03:08:56PM -0300, Tiago Vignatti wrote:
>> This patch adds ioctl-errors subtest to be used for exercising prime sync ioctl
>> errors.
>>
>> The subtest constantly interrupts via signals a function doing concurrent blit
>> to stress out the right usage of prime_sync_*, making sure these ioctl errors
>> are handled accordingly. Important to note that in case of failure (e.g. in a
>> case where the ioctl wouldn't try again in a return error) this test does not
>> reliably catch the problem with 100% of accuracy.
>>
>> v2: fix prime sync direction when reading mmap'ed file.
>> v3: change the upper bound using time rather than loops
>>
>> Cc: Chris Wilson <chris at chris-wilson.co.uk>
>> Signed-off-by: Tiago Vignatti <tiago.vignatti at intel.com>
>
> I'm probably blind, but where is the reviewed kernel patch for this? If
> it's somewhere hidden, please resubmit with all the whizzbang stuff needed
> for merging added ;-)
>
> Thanks, Daniel

You're not blind Daniel :) Chris will be sending the kernel side but 
regardless this igt test should be good to go even without the kernel patch.

Tiago