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Date:   Fri, 16 Apr 2021 12:09:12 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     Peter Enderborg <peter.enderborg@sony.com>
Cc:     linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        Sumit Semwal <sumit.semwal@linaro.org>,
        Christian =?iso-8859-1?Q?K=F6nig?= <christian.koenig@amd.com>,
        Alexey Dobriyan <adobriyan@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Muchun Song <songmuchun@bytedance.com>,
        Roman Gushchin <guro@fb.com>,
        Shakeel Butt <shakeelb@google.com>,
        Michal Hocko <mhocko@suse.com>, NeilBrown <neilb@suse.de>,
        Sami Tolvanen <samitolvanen@google.com>,
        Mike Rapoport <rppt@kernel.org>, linux-media@vger.kernel.org,
        dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org
Subject: Re: [PATCH] dma-buf: Add DmaBufTotal counter in meminfo
Message-ID: <20210416110912.GI2531743@casper.infradead.org>
References: <20210416093719.6197-1-peter.enderborg@sony.com>
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In-Reply-To: <20210416093719.6197-1-peter.enderborg@sony.com>
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On Fri, Apr 16, 2021 at 11:37:19AM +0200, Peter Enderborg wrote:
> diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
> index 6fa761c9cc78..3c1a82b51a6f 100644
> --- a/fs/proc/meminfo.c
> +++ b/fs/proc/meminfo.c
> @@ -16,6 +16,7 @@
>  #ifdef CONFIG_CMA
>  #include <linux/cma.h>
>  #endif
> +#include <linux/dma-buf.h>
>  #include <asm/page.h>
>  #include "internal.h"
>  
> @@ -145,6 +146,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
>  	show_val_kb(m, "CmaFree:        ",
>  		    global_zone_page_state(NR_FREE_CMA_PAGES));
>  #endif
> +	show_val_kb(m, "DmaBufTotal:    ", dma_buf_get_size());
>  
>  	hugetlb_report_meminfo(m);
>  

... and if CONFIG_DMA_SHARED_BUFFER is not set ...?