Linux Kernel Support For Intel Processor Trace (Intel PT)
Written by Michael Larabel in Intel on 16 December 2013 at 10:12 AM EST. Add A Comment
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Patches were published last week that enable support for the Intel Processor Trace extension within the Linux kernel's perf sub-system.

A set of 71 patches against the Linux kernel provide support for Intel Processor Trace (PT), an Intel CPU etension that provides information about software execution flow. Via the perf subsystem this information is then exposed to user-space and there's an abstraction for it using the "itrace" utility.

For those developers interested in more information on Linux Intel Processor Trace support, see the Linux kernel mailing list.

In terms of Intel PT support, it seems to be a Broadwell CPU feature. More details on Intel PT can be found via this Intel.com page.
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Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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