linux-kernel - Re: [PATCH] ARM: print cma-reserved pages from show

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Message-ID: <54D40DAF.4080609@codeaurora.org>
Date:	Thu, 05 Feb 2015 16:41:19 -0800
From:	Laura Abbott <lauraa@...eaurora.org>
To:	Gregory Fong <gregory.0xf0@...il.com>,
	linux-arm-kernel@...ts.infradead.org
CC:	f.fainelli@...il.com, vishnu.ps@...sung.com,
	Russell King <linux@....linux.org.uk>,
	Nicolas Pitre <nico@...aro.org>,
	Kees Cook <keescook@...omium.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Yalin Wang <Yalin.Wang@...ymobile.com>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: print cma-reserved pages from show_mem

On 2/4/2015 3:22 PM, Gregory Fong wrote:
> Add cma reserved information to the ARM-specific show_mem.  It was
> added to the generic implementation by commit
> 49abd8c28046adf77c5ce1949549aa64d7221881 "lib/show_mem.c: add cma
> reserved information".
>
> Signed-off-by: Gregory Fong <gregory.0xf0@...il.com>
> ---
>   arch/arm/mm/init.c | 4 ++++
>   1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> index 2495c8c..da77507 100644
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -22,6 +22,7 @@
>   #include <linux/memblock.h>
>   #include <linux/dma-contiguous.h>
>   #include <linux/sizes.h>
> +#include <linux/cma.h>
>
>   #include <asm/cp15.h>
>   #include <asm/mach-types.h>
> @@ -130,6 +131,9 @@ void show_mem(unsigned int filter)
>   	printk("%d pages of RAM\n", total);
>   	printk("%d free pages\n", free);
>   	printk("%d reserved pages\n", reserved);
> +#ifdef CONFIG_CMA
> +	printk("%lu cma reserved pages\n", totalcma_pages);
> +#endif

Nit: 'cma reserved pages' is a bit unclear. Are there some CMA
pages that aren't reserved? Dropping the reserved might be
clearer.

Thanks,
Laura

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Qualcomm Innovation Center, Inc.
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