On 14/11/2019 17.38, Pierre Morel wrote:
[...]
>>> +static char buffer[4096];
>>> +
>>> +static void delay(int d)
>>> +{
>>> + int i, j;
>>> +
>>> + while (d--)
>>> + for (i = 1000000; i; i--)
>>> + for (j = 1000000; j; j--)
>>> + ;
>>> +}
>> You could set a timer.
>
> Hum, do we really want to do this?
I'm pretty sure that the compiler optimizes empty loops away. Maybe have
a look at the disassembly of your delay function...
Anyway, it's likely better to use STCK and friends to get a proper
timing. You could move get_clock_ms() from s390x/intercept.c to the
lib/s390x folder and then use that function here.
Thomas
