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authorcem <cem@FreeBSD.org>2015-12-14 22:01:52 +0000
committercem <cem@FreeBSD.org>2015-12-14 22:01:52 +0000
commitae2a2410dfbb8af28cde979e8837897684afd270 (patch)
tree955d97b497debea48deac66a6283d834a31824d2 /contrib/llvm/lib/CodeGen/MachineBlockFrequencyInfo.cpp
parentd831f84b445f319248306063b703630000fe0128 (diff)
downloadFreeBSD-src-ae2a2410dfbb8af28cde979e8837897684afd270.zip
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ioat(4): Add support for interrupt coalescing
In I/OAT, this is done through the INTRDELAY register. On supported platforms, this register can coalesce interrupts in a set period to avoid excessive interrupt load for small descriptor workflows. The period is configurable anywhere from 1 microsecond to 16.38 milliseconds, in microsecond granularity. Sponsored by: EMC / Isilon Storage Division
Diffstat (limited to 'contrib/llvm/lib/CodeGen/MachineBlockFrequencyInfo.cpp')
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