The Thousands Of FIXMEs & TODOs In The Linux Kernel

Written by Michael Larabel in Linux Kernel on 8 January 2016 at 10:41 AM EST. 25 Comments
Canonical's Colin King has looked at the number of FIXME and TODO comments within the Linux kernel tree.

King found that currently there are more than four thousand "FIXME" comments within the Linux 4.4 kernel source code. After becoming curious, he found almost 4,500 "TODO" comments in the kernel source code as well.

Running some analytics on the kernel code-base about FIXME and TODO comments, he found there is certainly an upward trend with the frequency of such comments in the kernel code. However, at the same time, the Linux kernel size continues increasing.

When factoring the size of the Linux kernel source code, he found the number of FIXME comments in the kernel are dropping while TODO comments are increasing. If you are curious about these light Linux kernel FIXME/TODO statistics, visit Colin's blog.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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