linux-kernel - Re: [PATCH v2] MIPS: Select ARCH_KEEP_MEMBLOCK if DEBUG

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Date:   Mon, 14 Dec 2020 16:19:25 +0100
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: Re: [PATCH v2] MIPS: Select ARCH_KEEP_MEMBLOCK if DEBUG_KERNEL to
 enable sysfs memblock debug

On Mon, Dec 07, 2020 at 08:21:42PM +0800, Tiezhu Yang wrote:
> In the current code, CONFIG_ARCH_KEEP_MEMBLOCK is not set for MIPS arch,
> memblock_discard() will discard memory and reserved arrays if they were
> allocated, select ARCH_KEEP_MEMBLOCK if DEBUG_KERNEL to give a chance to
> track "memory" and "reserved" memblocks after early boot, with this patch,
> we can see the following two sysfs interfaces under DEBUG_FS.
> 
> /sys/kernel/debug/memblock/memory
> /sys/kernel/debug/memblock/reserved
> 
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
> ---
> 
> v2:
>   - select ARCH_KEEP_MEMBLOCK only if DEBUG_KERNEL
> 
>  arch/mips/Kconfig | 1 +
>  1 file changed, 1 insertion(+)

applied to mips-next.

Thomas.

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