[PATCH] PPC64 enable hp-timing 4th try

[Steven Munroe]

This version uses a small 1024 byte buffer on the stack. 1K is the sweet
spot and will handle up to 8 processors in the 1st read. For larger
systems (/proc/cpuinfo larger than 1023 bytes) we will read 512 bytes at
a time until we find EOF, keeping the last two 512 buffers. The last
512-1023 bytes of the file will contain the timebase value.

This will handle any number of CPUs in /proc/cpuinfo as long as timebase
value follows the CPUs.



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