[PATCH v8 2/4] drm/file: Add fdinfo helper for printing regions with prefix

[Tvrtko Ursulin]

On 14/01/2025 17:34, Adrián Larumbe wrote:
> This is motivated by the desire of some drivers (eg. Panthor) to print the
> size of internal memory regions with a prefix that reflects the driver
> name, as suggested in the previous documentation commit.
> 
> That means adding a new argument to print_size and making it available for
> DRM users.
> 
> Signed-off-by: Adrián Larumbe <adrian.larumbe at collabora.com>
> Cc: Tvrtko Ursulin <tursulin at ursulin.net>
> ---
>   drivers/gpu/drm/drm_file.c | 27 +++++++++++++++++++--------
>   include/drm/drm_file.h     |  5 +++++
>   2 files changed, 24 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
> index cb5f22f5bbb6..f584abcd13cb 100644
> --- a/drivers/gpu/drm/drm_file.c
> +++ b/drivers/gpu/drm/drm_file.c
> @@ -830,8 +830,12 @@ void drm_send_event(struct drm_device *dev, struct drm_pending_event *e)
>   }
>   EXPORT_SYMBOL(drm_send_event);
>   
> -static void print_size(struct drm_printer *p, const char *stat,
> -		       const char *region, u64 sz)
> +
> +void drm_fdinfo_print_size(struct drm_printer *p,
> +			   const char *prefix,
> +			   const char *stat,
> +			   const char *region,
> +			   u64 sz)
>   {
>   	const char *units[] = {"", " KiB", " MiB"};
>   	unsigned u;
> @@ -842,8 +846,10 @@ static void print_size(struct drm_printer *p, const char *stat,
>   		sz = div_u64(sz, SZ_1K);
>   	}
>   
> -	drm_printf(p, "drm-%s-%s:\t%llu%s\n", stat, region, sz, units[u]);
> +	drm_printf(p, "%s-%s-%s:\t%llu%s\n",
> +		   prefix, stat, region, sz, units[u]);
>   }
> +EXPORT_SYMBOL(drm_fdinfo_print_size);
>   
>   /**
>    * drm_print_memory_stats - A helper to print memory stats
> @@ -858,15 +864,20 @@ void drm_print_memory_stats(struct drm_printer *p,
>   			    enum drm_gem_object_status supported_status,
>   			    const char *region)
>   {
> -	print_size(p, "total", region, stats->private + stats->shared);
> -	print_size(p, "shared", region, stats->shared);
> -	print_size(p, "active", region, stats->active);
> +	const char *prefix = "drm";
> +
> +	drm_fdinfo_print_size(p, prefix, "total", region,
> +			      stats->private + stats->shared);
> +	drm_fdinfo_print_size(p, prefix, "shared", region, stats->shared);
> +	drm_fdinfo_print_size(p, prefix, "active", region, stats->active);
>   
>   	if (supported_status & DRM_GEM_OBJECT_RESIDENT)
> -		print_size(p, "resident", region, stats->resident);
> +		drm_fdinfo_print_size(p, prefix, "resident", region,
> +				      stats->resident);
>   
>   	if (supported_status & DRM_GEM_OBJECT_PURGEABLE)
> -		print_size(p, "purgeable", region, stats->purgeable);
> +		drm_fdinfo_print_size(p, prefix, "purgeable", region,
> +				      stats->purgeable);
>   }
>   EXPORT_SYMBOL(drm_print_memory_stats);
>   
> diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
> index f0ef32e9fa5e..001ae553e8c3 100644
> --- a/include/drm/drm_file.h
> +++ b/include/drm/drm_file.h
> @@ -494,6 +494,11 @@ struct drm_memory_stats {
>   
>   enum drm_gem_object_status;
>   
> +void drm_fdinfo_print_size(struct drm_printer *p,
> +				  const char *prefix,
> +				  const char *stat,
> +				  const char *region,
> +				  u64 sz);
>   void drm_print_memory_stats(struct drm_printer *p,
>   			    const struct drm_memory_stats *stats,
>   			    enum drm_gem_object_status supported_status,

If I can get away with a sneaky:

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at igalia.com>

Regards,

Tvrtko