[PATCH] testsuite: Use printk for all test output where possible.

[Chris Johns]

On 19/10/17 5:01 pm, Sebastian Huber wrote:
> On 19/10/17 07:45, Chris Johns wrote:
>> - Remove the printf support leaving the direct printk support configured
>>    with TESTS_USE_PRINTK and all other output goes via a buffered vsniprintf
>>    call to printk.
> 
> What is the benefit of this buffered IO compared to printk?
> 

I implemented IO buffering to start with and the testing failed so I added the
'\n' detection and flushing.

I wanted to use vsniprintf to make sure the same output is generated. If the
output is the same as printk we can use printk.

Chris