Re: [RFC PATCH v2 3/6] kcov: add CONFIG_KCOV_DATAFLOW_INSTRUMENT_ALL and NO_INLINE

Peter Zijlstra <[email protected]> Thu, 4 Jun 2026 10:46:40 +0200

Newsgroups	org.kernel.vger.workflows,dev.linux.lists.llvm,org.kernel.vger.linux-doc,org.kernel.vger.linux-kbuild,org.kernel.vger.linux-kernel,org.kernel.vger.rust-for-linux
Message-ID	<[email protected]>

On Wed, Jun 03, 2026 at 07:43:30PM +0200, Yunseong Kim wrote:

> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
> index abd1a94589aa..3b952b6361a8 100644
> --- a/lib/Kconfig.debug
> +++ b/lib/Kconfig.debug
> @@ -2261,7 +2261,6 @@ config KCOV_SELFTEST
>  	  On test failure, causes the kernel to panic. Recommended to be
>  	  enabled, ensuring critical functionality works as intended.
>  
> -
>  config KCOV_DATAFLOW_ARGS
>  	bool "Enable KCOV dataflow: function argument capture"
>  	depends on KCOV
> @@ -2283,6 +2282,28 @@ config KCOV_DATAFLOW_RET
>  	  metadata, recording individual field values at runtime.
>  	  Enable per-module with: KCOV_DATAFLOW_file.o := y in the Makefile.
>  	  Requires clang with -fsanitize-coverage=dataflow-ret support.
> +

This goes into patch 1