linux-kernel - Re: [PATCH] arm64:free_initrd_mem should also free the memblock

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Message-ID: <20140917162822.GB15261@e104818-lin.cambridge.arm.com>
Date:	Wed, 17 Sep 2014 17:28:23 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	"Wang, Yalin" <Yalin.Wang@...ymobile.com>
Cc:	Will Deacon <Will.Deacon@....com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	"'linux-mm@...ck.org'" <linux-mm@...ck.org>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	"'linux-arm-kernel@...ts.infradead.org'" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] arm64:free_initrd_mem should also free the memblock

On Tue, Sep 16, 2014 at 02:53:55AM +0100, Wang, Yalin wrote:
> The reason that a want merge this patch is that
> It confuse me when I debug memory issue by 
> /sys/kernel/debug/memblock/reserved  debug file,
> It show lots of un-correct reserved memory.
> In fact, I also send a patch to cma driver part
> For this issue too:
> http://ozlabs.org/~akpm/mmots/broken-out/free-the-reserved-memblock-when-free-cma-pages.patch
> 
> I want to remove these un-correct memblock parts as much as possible,
> so that I can see more correct info from /sys/kernel/debug/memblock/reserved
> debug file .

Could we not always call memblock_free() from free_reserved_area() (with
a dummy definition when !CONFIG_HAVE_MEMBLOCK)?

-- 
Catalin
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