Re: [PATCH v3 1/6] kunit: move KUNIT_TABLE out of INIT_DATA

From: David Gow
Date: Sat Dec 09 2023 - 02:58:19 EST


On Tue, 5 Dec 2023 at 06:19, Rae Moar <rmoar@xxxxxxxxxx> wrote:
>
> Alter the linker section of KUNIT_TABLE to move it out of INIT_DATA and
> into DATA_DATA.
>
> Data for KUnit tests does not need to be in the init section.
>
> In order to run tests again after boot the KUnit data cannot be labeled as
> init data as the kernel could write over it.
>
> Add a KUNIT_INIT_TABLE in the next patch for KUnit tests that test init
> data/functions.
>
> Signed-off-by: Rae Moar <rmoar@xxxxxxxxxx>
> ---

I think this actually fixes a potential bug, as we loop through the
list of suites after init has ended in the debugfs logic.

So maybe this is:
Fixes: 90a025a859a3 ("vmlinux.lds.h: add linker section for KUnit test suites")

Regardless, I'd love to get this in, even if we don't manage to get
the rest of the series in soon.

Reviewed-by: David Gow <davidgow@xxxxxxxxxx>

Cheers,
-- David

> include/asm-generic/vmlinux.lds.h | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> index bae0fe4d499b..1107905d37fc 100644
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
> @@ -370,7 +370,8 @@
> BRANCH_PROFILE() \
> TRACE_PRINTKS() \
> BPF_RAW_TP() \
> - TRACEPOINT_STR()
> + TRACEPOINT_STR() \
> + KUNIT_TABLE()
>
> /*
> * Data section helpers
> @@ -699,8 +700,7 @@
> THERMAL_TABLE(governor) \
> EARLYCON_TABLE() \
> LSM_TABLE() \
> - EARLY_LSM_TABLE() \
> - KUNIT_TABLE()
> + EARLY_LSM_TABLE()
>
> #define INIT_TEXT \
> *(.init.text .init.text.*) \
>
> base-commit: b85ea95d086471afb4ad062012a4d73cd328fa86
> --
> 2.43.0.rc2.451.g8631bc7472-goog
>

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