| Commit message (Collapse) | Author | Age | Files | Lines |
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If frequency of an invariant (non-stop) time stamp counter is measured
using an independent working timecounter that has a known frequency, we
can assume that the measured TSC frequency is as good as the resolution
of the timecounter that we use to perform the measurement. This lets us
switch from this high quality but expensive source to the cheaper TSC
without sacrificing precision on a wide range of modern CPUs.
From Adam Steen <adam@adamsteen.com.au> with tweaks from reyk@ and myself.
Tested by brynet@, sthen@ and others, OK mlarkin, sthen
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have any direct symbols used. Tested for indirect use by compiling
amd64/i386/sparc64 kernels.
ok tedu@ deraadt@
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ok miod
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Patch from Oleg Safiullin (a.k.a form@)
ok kettenis canacar weingart
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ok marco@
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ok marco@
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ACPI tables into kernel memory and attach ACPI and HPET timers currently.
In order to test this code, enabling the devices in GENERIC as well as
the ACPI_ENABLE option is needed. This code does not do any thermal
control yet, so this should be done with care depending on the platform.
In the tree so more people can contribute to making this more fully
featured.
Ok niklas@ grange@ tedu@
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