From: Andy Joe <jyizheng@gmail.com>
To: linux-mm@kvack.org
Subject: Is free_all_bootmem broken for ARM in Linux 4.0
Date: Sun, 31 May 2015 22:05:02 -0400 [thread overview]
Message-ID: <CAD6TEOBtaWsYAx8YYUdTzgm8vRUzjiSKz3BVf4vnUk_Wn6tVwQ@mail.gmail.com> (raw)
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Hi Experts,
I found that there some modifications to the initialization of memory
system for ARM. In particular, init_bootmem_node is no longer called.
But free_all_bootmem is still in use. In this sense, the global variable
bdata_list is empty. I wonder how the new code is able to free pages
to buddy system. Is this an issue?
The related code are listed below.
http://lxr.free-electrons.com/source/arch/arm/mm/init.c#L530
http://lxr.free-electrons.com/source/mm/bootmem.c#L272
Please help.
Thanks,
Yizheng
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