[PATCH] CBQ: fix unfairness when gettimeofday clock source is used
sch_cbq with gettimeofday clock source has limit 2000000 usec for the idle
Therefore when we try to set bandwidth less than 10000 bits/s then
sch_cbq doesn't work (idle time want to become about 4000000 usec).
Triggered by RHEL5 which switched from jiffies clocksource to gettimeofday()
BTW, why? According to ANK this should work poorly, since
gettimeofday can take as much as 100 microseconds...