[PATCH -tip 0/1] posix-cpu-timers: fix CPUCLOCK_{PROF,VIRT} periodic tics precision -v1

[Stanislaw Gruszka]

Reference:
http://lkml.org/lkml/2009/8/11/174

Changelog v0 -> v1:

Fix for PowerPC with CONFIG_VIRT_CPU_ACCOUNTING. Due to rounding return
value of cputime_to_jiffies(), calculations of next expiration time
not worked as I expected. I removed any conversions and do direct
calculations on cputime values treat them as unsigned long long.

Cheers
Stanislaw
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