Re: [Intel-gfx] [PATCH v2] drm/i915/guc: Remove log size module parameters

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On Fri, Aug 26, 2022 at 12:23:43PM +0300, Joonas Lahtinen wrote:
> Remove the module parameters for configuring GuC log size.
> 
> We should instead rely on tuning the defaults to be usable for
> reporting bugs.
> 
> v2:
> - Use correct 1M unit
> 
> Fixes: 8ad0152afb1b ("drm/i915/guc: Make GuC log sizes runtime configurable")
> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>
> Cc: John Harrison <John.C.Harrison@xxxxxxxxx>
> Cc: Alan Previn <alan.previn.teres.alexis@xxxxxxxxx>
> Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/gt/uc/intel_guc_log.c |  7 +++----
>  drivers/gpu/drm/i915/i915_params.c         | 12 ------------
>  drivers/gpu/drm/i915/i915_params.h         |  3 ---
>  3 files changed, 3 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
> index 3a2243b4ac9f..55d4b8f8e33e 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
> @@ -79,9 +79,9 @@ static void _guc_log_init_sizes(struct intel_guc_log *log)
>  		}
>  	};
>  	s32 params[GUC_LOG_SECTIONS_LIMIT] = {
> -		i915->params.guc_log_size_crash,
> -		i915->params.guc_log_size_debug,
> -		i915->params.guc_log_size_capture,
> +		GUC_LOG_DEFAULT_CRASH_BUFFER_SIZE / SZ_1M,
> +		GUC_LOG_DEFAULT_DEBUG_BUFFER_SIZE / SZ_1M,
> +		GUC_LOG_DEFAULT_CAPTURE_BUFFER_SIZE / SZ_1M,
>  	};
>  	int i;
>  
> @@ -90,7 +90,6 @@ static void _guc_log_init_sizes(struct intel_guc_log *log)
>  
>  	/* If debug size > 1MB then bump default crash size to keep the same units */
>  	if (log->sizes[GUC_LOG_SECTIONS_DEBUG].bytes >= SZ_1M &&
> -	    (i915->params.guc_log_size_crash == -1) &&
>  	    GUC_LOG_DEFAULT_CRASH_BUFFER_SIZE < SZ_1M)
>  		log->sizes[GUC_LOG_SECTIONS_CRASH].bytes = SZ_1M;
>  
> diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
> index 06ca5b822111..6fc475a5db61 100644
> --- a/drivers/gpu/drm/i915/i915_params.c
> +++ b/drivers/gpu/drm/i915/i915_params.c
> @@ -171,18 +171,6 @@ i915_param_named(guc_log_level, int, 0400,
>  	"GuC firmware logging level. Requires GuC to be loaded. "
>  	"(-1=auto [default], 0=disable, 1..4=enable with verbosity min..max)");
>  
> -i915_param_named(guc_log_size_crash, int, 0400,
> -	"GuC firmware logging buffer size for crash dumps (in MB)"
> -	"(-1=auto [default], NB: max = 4, other restrictions apply)");
> -
> -i915_param_named(guc_log_size_debug, int, 0400,
> -	"GuC firmware logging buffer size for debug logs (in MB)"
> -	"(-1=auto [default], NB: max = 16, other restrictions apply)");
> -
> -i915_param_named(guc_log_size_capture, int, 0400,
> -	"GuC error capture register dump buffer size (in MB)"
> -	"(-1=auto [default], NB: max = 4, other restrictions apply)");
> -
>  i915_param_named_unsafe(guc_firmware_path, charp, 0400,
>  	"GuC firmware path to use instead of the default one");
>  
> diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
> index f684d1ab8707..2733cb6cfe09 100644
> --- a/drivers/gpu/drm/i915/i915_params.h
> +++ b/drivers/gpu/drm/i915/i915_params.h
> @@ -61,9 +61,6 @@ struct drm_printer;
>  	param(int, invert_brightness, 0, 0600) \
>  	param(int, enable_guc, -1, 0400) \
>  	param(int, guc_log_level, -1, 0400) \
> -	param(int, guc_log_size_crash, -1, 0400) \
> -	param(int, guc_log_size_debug, -1, 0400) \
> -	param(int, guc_log_size_capture, -1, 0400) \
>  	param(char *, guc_firmware_path, NULL, 0400) \
>  	param(char *, huc_firmware_path, NULL, 0400) \
>  	param(char *, dmc_firmware_path, NULL, 0400) \
> -- 
> 2.37.2
> 



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