On Mon, Mar 14, 2022 at 11:35:52AM -0700, Dave Hansen wrote:
> From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
>
> The kernel has a wide variety of debugging options to help catch
> and squash bugs. However, new debugging is added all the time and
> the existing options can be hard to find.
>
> Add a list of debugging options which tip maintainers expect to be
> used to test contributions.
>
> This should make it easier for contributors to test their code and
> find issues before submission.
>
> Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
> Cc: Jonathan Corbet <corbet@xxxxxxx>
> Cc: Borislav Petkov <bp@xxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: x86@xxxxxxxxxx
> Cc: linux-doc@xxxxxxxxxxxxxxx
> ---
> Documentation/process/maintainer-tip.rst | 24 ++++++++++++++++++++++++
> 1 file changed, 24 insertions(+)
>
> diff --git a/Documentation/process/maintainer-tip.rst b/Documentation/process/maintainer-tip.rst
> index c74f4a81588b..75f86b0f1cf0 100644
> --- a/Documentation/process/maintainer-tip.rst
> +++ b/Documentation/process/maintainer-tip.rst
> @@ -437,6 +437,30 @@ in a private repository which allows interested people to easily pull the
> series for testing. The usual way to offer this is a git URL in the cover
> letter of the patch series.
>
> +Testing
> +^^^^^^^
> +
> +Code should be tested before submitting to the tip maintainers. Anything
> +other than minor changes should be built, booted and tested with the
> +following set of comprehensive (and heavyweight) set of kernel debugging
> +options enabled.
> +
> + CONFIG_X86_DEBUG_FPU=y
> + CONFIG_LOCK_STAT=y
> + CONFIG_DEBUG_VM=y
> + CONFIG_DEBUG_VM_VMACACHE=y
> + CONFIG_DEBUG_VM_RB=y
> + CONFIG_DEBUG_SLAB=y
> + CONFIG_DEBUG_KMEMLEAK=y
> + CONFIG_DEBUG_PAGEALLOC=y
> + CONFIG_SLUB_DEBUG_ON=y
> + CONFIG_KMEMCHECK=y
> + CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=y
> + CONFIG_GCOV_KERNEL=y
> + CONFIG_LOCKDEP=y
> + CONFIG_PROVE_LOCKING=y
> + CONFIG_SCHEDSTATS=y
> + CONFIG_VMLINUX_VALIDATION=y
It would be cool if there were a command I can run so that I can enable
all those. Example:
$ grep CONFIG_VMLINUX_VALIDATION .config
$ ./scripts/config --enable CONFIG_VMLINUX_VALIDATION
$ grep CONFIG_VMLINUX_VALIDATION .config
CONFIG_VMLINUX_VALIDATION=y
$ make oldconfig
#
# configuration written to .config
#
$ grep CONFIG_VMLINUX_VALIDATION .config
$
Needs other options.
Maybe you could create a .config snippet which we can merge
with scripts/kconfig/merge_config.sh... or maybe start from
arch/x86/configs/x86_64_defconfig, add all those and call it
arch/x86/configs/x86_64_testconfig
or so.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
