linux-kernel - Re: [PATCH v2] mm: cma: Print region name on failure

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Message-ID: <7caf3642-4283-4288-45c1-fcbd17d8c84b@infradead.org>
Date:   Tue, 9 Feb 2021 09:36:00 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Georgi Djakov <georgi.djakov@...aro.org>,
        akpm@...ux-foundation.org, linux-mm@...ck.org
Cc:     pdaly@...eaurora.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mm: cma: Print region name on failure

On 2/9/21 6:24 AM, Georgi Djakov wrote:
> From: Patrick Daly <pdaly@...eaurora.org>
> 
> Print the name of the CMA region for convenience. This is useful
> information to have when cma_alloc() fails.
> 
> Signed-off-by: Patrick Daly <pdaly@...eaurora.org>
> Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>

Reviewed-by: Randy Dunlap <rdunlap@...radead.org>

Thanks.

> ---
> v2:
>  * Print the "count" variable, as it was originally in the code. (Randy)
>  * Fix spelling s/convienience/convenience/ in the commit text (Randy)
> 
> v1: https://lore.kernel.org/r/20210208115200.20286-1-georgi.djakov@linaro.org/
> 
>  mm/cma.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/mm/cma.c b/mm/cma.c
> index 23d4a97c834a..54eee2119822 100644
> --- a/mm/cma.c
> +++ b/mm/cma.c
> @@ -500,8 +500,8 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align,
>  	}
>  
>  	if (ret && !no_warn) {
> -		pr_err("%s: alloc failed, req-size: %zu pages, ret: %d\n",
> -			__func__, count, ret);
> +		pr_err("%s: %s: alloc failed, req-size: %zu pages, ret: %d\n",
> +		       __func__, cma->name, count, ret);
>  		cma_debug_show_areas(cma);
>  	}
>  
> 


-- 
~Randy