Re: [PATCH v3 1/5] drm: Move EXPORT_SYMBOL_FOR_TESTS_ONLY under a separate Kconfig

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On Wed, Nov 06, 2019 at 02:24:28PM +0000, Chris Wilson wrote:
> Currently, we only export symbols for drm-selftests which are either
> compiled as modules or into the main drm builtin. However, if we want to
> export symbols from drm.ko for the drivers' selftests, we require a
> means of controlling that export separately. So we add a new Kconfig to
> determine whether or not the EXPORT_SYMBOL_FOR_TESTS_ONLY() takes
> effect.
> 
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>

Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>

> ---
>  drivers/gpu/drm/Kconfig | 4 ++++
>  include/drm/drm_util.h  | 2 +-
>  2 files changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index 617d9c3a86c3..d3560afe34d3 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -54,6 +54,9 @@ config DRM_DEBUG_MM
>  
>  	  If in doubt, say "N".
>  
> +config DRM_EXPORT_FOR_TESTS
> +	bool
> +
>  config DRM_DEBUG_SELFTEST
>  	tristate "kselftests for DRM"
>  	depends on DRM
> @@ -61,6 +64,7 @@ config DRM_DEBUG_SELFTEST
>  	select PRIME_NUMBERS
>  	select DRM_LIB_RANDOM
>  	select DRM_KMS_HELPER
> +	select DRM_EXPORT_FOR_TESTS if m
>  	default n
>  	help
>  	  This option provides kernel modules that can be used to run
> diff --git a/include/drm/drm_util.h b/include/drm/drm_util.h
> index 07b8e9f04599..79952d8c4bba 100644
> --- a/include/drm/drm_util.h
> +++ b/include/drm/drm_util.h
> @@ -41,7 +41,7 @@
>   * Use EXPORT_SYMBOL_FOR_TESTS_ONLY() for functions that shall
>   * only be visible for drmselftests.
>   */
> -#if defined(CONFIG_DRM_DEBUG_SELFTEST_MODULE)
> +#if defined(CONFIG_DRM_EXPORT_FOR_TESTS)
>  #define EXPORT_SYMBOL_FOR_TESTS_ONLY(x) EXPORT_SYMBOL(x)
>  #else
>  #define EXPORT_SYMBOL_FOR_TESTS_ONLY(x)
> -- 
> 2.24.0
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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