849aef496d
Update the NetBSD Kernel Concurrency Sanitizer (KCSAN) runtime to work in the FreeBSD kernel. It is a useful tool for finding data races between threads executing on different CPUs. This can be enabled by enabling KCSAN in the kernel config, or by using the GENERIC-KCSAN amd64 kernel. It works on amd64 and arm64, however the later needs a compiler change to allow -fsanitize=thread that KCSAN uses. Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D22315
34 lines
1.2 KiB
Plaintext
34 lines
1.2 KiB
Plaintext
#
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# GENERIC-KCSAN -- Kernel Concurrency Sanitizer kernel configuration file
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# for FreeBSD/amd64
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#
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# This configuration file removes several debugging options, including
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# WITNESS and INVARIANTS checking, which are known to have significant
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# performance impact on running systems. When benchmarking new features
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# this kernel should be used instead of the standard GENERIC.
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# This kernel configuration should never appear outside of the HEAD
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# of the FreeBSD tree.
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#
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# For more information on this file, please read the config(5) manual page,
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# and/or the handbook section on Kernel Configuration Files:
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#
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# https://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
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#
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# The handbook is also available locally in /usr/share/doc/handbook
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# if you've installed the doc distribution, otherwise always see the
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# FreeBSD World Wide Web server (https://www.FreeBSD.org/) for the
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# latest information.
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#
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# An exhaustive list of options and more detailed explanations of the
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# device lines is also present in the ../../conf/NOTES and NOTES files.
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# If you are in doubt as to the purpose or necessity of a line, check first
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# in NOTES.
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#
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# $FreeBSD$
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include GENERIC
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ident GENERIC-KCSAN
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options KCSAN
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