[uml-user] mdelay() doesn't sleep

[David R. <dav...@ma...>]

Hi all,

Recently, I decided to use UML to develope my modules. My module calls 
mdelay() macro that is implemented in UML as:

n = (loops_per_jiffy * HZ * usecs) / MILLION;
for(i=0;i<n;i++)
    do ; while(0);


mdelay() worked perfectly in x86 but in UML it doesnt seem to sleep.

I've checked loop values:

loops_per_jiffy: 27918336
HZ: 100
MILLION: 1000000

My system is:
linux 2.6.32-r5
gcc version 4.3.4 (Debian 4.3.4-2)

Can it be a compiler optimization?

Thanks in advance,
   David