linux-kernel - Re: [PATCH] drm/ttm: Use a static string instead of an array of char *

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Date:   Tue, 28 Nov 2017 20:37:13 +0100
From:   Christian König <ckoenig.leichtzumerken@...il.com>
To:     Joe Perches <joe@...ches.com>, linux-kernel@...r.kernel.org
Cc:     David Airlie <airlied@...ux.ie>,
        Colin King <colin.king@...onical.com>,
        dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] drm/ttm: Use a static string instead of an array of char
 *

Am 28.11.2017 um 20:34 schrieb Joe Perches:
> Make the object a bit smaller by using a simple string instead
> of a format string and array of char *.
>
> $ size drivers/gpu/drm/ttm/ttm_page_alloc_dma.o*
>     text	   data	    bss	    dec	    hex	filename
>     8820	    216	   4136	  13172	   3374	drivers/gpu/drm/ttm/ttm_page_alloc_dma.o.defconfig.new
>     8910	    216	   4136	  13262	   33ce	drivers/gpu/drm/ttm/ttm_page_alloc_dma.o.defconfig.old
>    25383	   5044	   4384	  34811	   87fb	drivers/gpu/drm/ttm/ttm_page_alloc_dma.o.allyesconfig.new
>    25797	   5428	   4384	  35609	   8b19	drivers/gpu/drm/ttm/ttm_page_alloc_dma.o.allyesconfig.old
>
> Miscellanea:
>
> o The h array had more entries than were emitted, all are now removed
>
> Signed-off-by: Joe Perches <joe@...ches.com>

Reviewed-by: Christian König <christian.koenig@....com>

> ---
>   drivers/gpu/drm/ttm/ttm_page_alloc_dma.c | 5 +----
>   1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c b/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
> index 6b2627fe9bc1..bda00b2ab51c 100644
> --- a/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
> +++ b/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
> @@ -1244,15 +1244,12 @@ int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data)
>   {
>   	struct device_pools *p;
>   	struct dma_pool *pool = NULL;
> -	char *h[] = {"pool", "refills", "pages freed", "inuse", "available",
> -		     "name", "virt", "busaddr"};
>   
>   	if (!_manager) {
>   		seq_printf(m, "No pool allocator running.\n");
>   		return 0;
>   	}
> -	seq_printf(m, "%13s %12s %13s %8s %8s %8s\n",
> -		   h[0], h[1], h[2], h[3], h[4], h[5]);
> +	seq_printf(m, "         pool      refills   pages freed    inuse available     name\n");
>   	mutex_lock(&_manager->lock);
>   	list_for_each_entry(p, &_manager->pools, pools) {
>   		struct device *dev = p->dev;