[LTP] [PATCH] futex/futex_wake04.c: fix issues with hugepages and usleep

[Rafael David Tinoco]

On 10/10/18 7:43 AM, Cyril Hrubis wrote:
> Hi!
>> This commit fixes 2 observed issues:
>>
>> 1) usleep() time is too small if test is being executed in slower
>> terminal devices (specially embedded systems). Raising it to 0.001
>> seconds was enough to finish 10240 iterations in around 90 seconds in a
>> 4 vcpu kvm guest (fully emulated serial being used as console).
>>
>> 2) Test was changing number of hugepages during setup()/cleanup() phase
>> despite the system had (or not) available hugepages. This was causing
>> overhead of destroying (or creating) hugepages during the test
>> execution.  Now, if system has > 0 hugepages available, the test doesn't
>> touch it.
> 
> Can you please split this into separate patches? Generally it's
> considered a good practice to split unrelated changes like these.

Yes, will do. Ignore my last sentence in the other e-mail on the same 
thread (about this patch). Will post 2 patches "v2".

Thanks a lot Cyril!