linux-kernel - Re: [PATCH v3 2/2] ACPI,acpi_memhotplug: Remove acpi_memory

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Date:	Thu, 28 Mar 2013 08:58:03 +0900
From:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	Toshi Kani <toshi.kani@...com>, <linux-acpi@...r.kernel.org>,
	<tangchen@...fujitsu.com>, <wency@...fujitsu.com>,
	<laijs@...fujitsu.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] ACPI,acpi_memhotplug: Remove acpi_memory_info->failed
 bit

Hi Rafael,

2013/03/26 22:41, Rafael J. Wysocki wrote:
> On Tuesday, March 26, 2013 08:57:05 AM Yasuaki Ishimatsu wrote:
>> 2013/03/23 5:24, Toshi Kani wrote:
>>> On Fri, 2013-03-22 at 10:53 +0900, Yasuaki Ishimatsu wrote:
>>>> acpi_memory_info has enabled bit and failed bit for controlling memory
>>>> hotplug. But we don't need to keep both bits.
>>>>
>>>> The patch removes acpi_memory_info->failed bit.
>>>>
>>>> Signed-off-by: yasuaki ishimatsu <isimatu.yasuaki@...fujitsu.com>
>>>
>>> Thanks for the update.  It looks good.  For the series:
>>>
>>> Acked-by: Toshi Kani <toshi.kani@...com>
>>
>> Thanks!
>
> Both patches applied to linux-pm.git/linux-next.

Thank you for applying both patches.
If you don't mind, I hope these patches are merged into linux-3.9
since this is bug fix.

Thanks,
Yasuaki Ishimatsu

>
> Thanks,
> Rafael
>
>
>>>> ---
>>>>
>>>> v3 : Continue to memory hot remove when (!info->enabled) case.
>>>> v2 : Changed a based kernel from linux-3.9-rc2 to linux-pm.git/bleeding-edge.
>>>>
>>>> ---
>>>>     drivers/acpi/acpi_memhotplug.c |   15 ++-------------
>>>>     1 files changed, 2 insertions(+), 13 deletions(-)
>>>>
>>>> diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
>>>> index ea78988..5e6301e 100644
>>>> --- a/drivers/acpi/acpi_memhotplug.c
>>>> +++ b/drivers/acpi/acpi_memhotplug.c
>>>> @@ -73,7 +73,6 @@ struct acpi_memory_info {
>>>>     	unsigned short caching;	/* memory cache attribute */
>>>>     	unsigned short write_protect;	/* memory read/write attribute */
>>>>     	unsigned int enabled:1;
>>>> -	unsigned int failed:1;
>>>>     };
>>>>
>>>>     struct acpi_memory_device {
>>>> @@ -201,10 +200,8 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
>>>>     		 * returns -EEXIST. If add_memory() returns the other error, it
>>>>     		 * means that this memory block is not used by the kernel.
>>>>     		 */
>>>> -		if (result && result != -EEXIST) {
>>>> -			info->failed = 1;
>>>> +		if (result && result != -EEXIST)
>>>>     			continue;
>>>> -		}
>>>>
>>>>     		info->enabled = 1;
>>>>
>>>> @@ -238,16 +235,8 @@ static int acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
>>>>     	nid = acpi_get_node(mem_device->device->handle);
>>>>
>>>>     	list_for_each_entry_safe(info, n, &mem_device->res_list, list) {
>>>> -		if (info->failed)
>>>> -			/* The kernel does not use this memory block */
>>>> -			continue;
>>>> -
>>>>     		if (!info->enabled)
>>>> -			/*
>>>> -			 * The kernel uses this memory block, but it may be not
>>>> -			 * managed by us.
>>>> -			 */
>>>> -			return -EBUSY;
>>>> +			continue;
>>>>
>>>>     		if (nid < 0)
>>>>     			nid = memory_add_physaddr_to_nid(info->start_addr);
>>>>
>>>
>>>
>>
>>
>> --
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