linux-kernel - Re: [PATCH v2 1/7] ACPI: Add CONFIG_HOTPLUG

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Date:	Fri, 11 May 2012 00:40:48 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	Toshi Kani <toshi.kani@...com>
CC:	lenb@...nel.org, linux-acpi@...r.kernel.org, bhelgaas@...gle.com,
	shuahkhan@...il.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/7] ACPI: Add CONFIG_HOTPLUG_OST option

On 05/09/2012 04:12 AM, Toshi Kani wrote:
> Added CONFIG_ACPI_HOTPLUG_OPT option. When this config option is disabled,
> this patchset has no effect on the platform. This option is disabled by
> default. The dependency list assures consistent behavior among CPU, memory
> and container hotplug operations with regarding the _OST support.
Seems also need to enhance the acpiphp driver for PCI hotplug operations too.
acpiphp driver is also based on the ACPI device hotplug model.

> 
> Signed-off-by: Toshi Kani <toshi.kani@...com>
> ---
>  drivers/acpi/Kconfig |   14 ++++++++++++++
>  1 files changed, 14 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
> index 47768ff..1e3a756 100644
> --- a/drivers/acpi/Kconfig
> +++ b/drivers/acpi/Kconfig
> @@ -351,6 +351,20 @@ config ACPI_HOTPLUG_MEMORY
>  	  To compile this driver as a module, choose M here:
>  	  the module will be called acpi_memhotplug.
>  
> +config ACPI_HOTPLUG_OST
> +	bool "Hotplug Status Indication Support"
> +	depends on ACPI_HOTPLUG_CPU
> +	depends on ACPI_HOTPLUG_MEMORY
> +	depends on ACPI_CONTAINER
> +	default n
> +	help
> +	  This option enables the use of the ACPI OSPM Status Indication
> +          (_OST), if available, for the platform to determine the status
> +	  of various hotplug operations. Some platforms may require this
> +	  option be enabled to track the status of hotplug operations.
> +	  This option has no effect when the platform does not support
> +	  _OST.
> +
>  config ACPI_SBS
>  	tristate "Smart Battery System"
>  	depends on X86

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