On Tuesday, December 04, 2012 01:39:54 AM Liu, Jinsong wrote:
> Resend it, add Rafael and linux-a...@vger.kernel.org
I wonder what memory hotplug people think about that.
Thanks,
Rafael
> ===============
> From 1d39279e45c54ce531691da5ffe261e7689dd92c Mon Sep 17 00:00:00 2001
> From: Liu Jinsong <jinsong....@intel.com>
> Date: Wed, 14 Nov 2012 18:52:06 +0800
> Subject: [PATCH] X86/acpi: remove redundant logic of acpi memory hotadd
>
> When memory hotadd, acpi_memory_enable_device has already been done
> at drv->ops.add (acpi_memory_device_add), no need to do it again
> at notify callback.
>
> At acpi_memory_enable_device, acpi_memory_get_device_resources
> is also a redundant action, since it has been done at drv->ops.add.
>
> Signed-off-by: Liu Jinsong <jinsong....@intel.com>
> ---
> drivers/acpi/acpi_memhotplug.c | 17 -----------------
> 1 files changed, 0 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
> index 24c807f..a6489fd 100644
> --- a/drivers/acpi/acpi_memhotplug.c
> +++ b/drivers/acpi/acpi_memhotplug.c
> @@ -220,15 +220,6 @@ static int acpi_memory_enable_device(struct
> acpi_memory_device *mem_device)
> struct acpi_memory_info *info;
> int node;
>
> -
> - /* Get the range from the _CRS */
> - result = acpi_memory_get_device_resources(mem_device);
> - if (result) {
> - printk(KERN_ERR PREFIX "get_device_resources failed\n");
> - mem_device->state = MEMORY_INVALID_STATE;
> - return result;
> - }
> -
> node = acpi_get_node(mem_device->device->handle);
> /*
> * Tell the VM there is more memory here...
> @@ -357,14 +348,6 @@ static void acpi_memory_device_notify(acpi_handle
> handle, u32 event, void *data)
> break;
> }
>
> - if (acpi_memory_check_device(mem_device))
> - break;
> -
> - if (acpi_memory_enable_device(mem_device)) {
> - printk(KERN_ERR PREFIX "Cannot enable memory device\n");
> - break;
> - }
> -
> ost_code = ACPI_OST_SC_SUCCESS;
> break;
>
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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