[Xen-devel] pvclock implementation in pv_ops kernel: why not __native_read_tsc()?

[Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>]

Hi Jeremy --

I was looking at rdtsc usages in 2.6.31... you may
or may not be surprised to hear that there is exactly
one usage location, at least through boot and some
basic NFS copying: native_read_tsc().  Digging through
the pvclock code, I see that pvclock calls native_read_tsc()
rather than use the __native_read_tsc() inline function.
Any reason for this?  It seems an unnecessary extra
function call for a routine that is used thousands
of times every second.

Dan

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