From: "Chuck Wolber" <chuck@wolber.net>
To: kasan-dev@googlegroups.com, nathan@kernel.org,
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Subject: [PROPOSAL] Replace gcov and kcov with llvm-cov
Date: Tue, 06 Oct 2026 15:14:23 +0000 [thread overview]
Message-ID: <00ed0b57-ad05-4c5d-b152-7c81df94b23a@app.fastmail.com> (raw)
Stemming from some hallway track conversations with maintainers at LPC
2026, I propose replacing gcov and kcov in the kernel with llvm-cov.
llvm-cov instruments at the AST which enables precise mapping back to
source code regardless of optimization level.
We have a set of patches [1] that implements kernel based llvm-cov. They
need to be updated and some additional patches are required to address
some stubs that are missing noinstr annotation. But otherwise I should
be able to send a full set of patches (including taking on the
maintainer role) to remove gcov and kcov and replace it with llvm-cov in
fairly short order.
If there is a desire to take this in pieces or implement other
intermediate steps, let me know. Otherwise I can generate a monolithic
set all at once.
[1] https://lore.kernel.org/lkml/20240905043245.1389509-1-wentaoz5@illinois.edu/
Thank you,
..Ch:W..
next reply other threads:[~2026-10-06 15:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-06 15:14 Chuck Wolber [this message]
2026-10-06 16:10 ` Marco Elver
2026-10-06 16:27 ` Chuck Wolber
2026-10-07 2:30 ` Masami Hiramatsu
2026-10-07 4:17 ` Chuck Wolber
2026-10-07 4:50 ` Masami Hiramatsu
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