Re: [PATCH -v12 02/15] resources: Add probe_resource()

[Yinghai Lu]

On Tue, Jun 26, 2012 at 3:07 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
> On Tue, Jun 26, 2012 at 11:53 AM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
>> It is changed from busn_res only version, because Bjorn found that version
>> was not holding resource_lock.
>> Even it may be ok for busn_res not holding resource_lock.
>> It would be better to have it to be generic and use lock and we may
>> use it for other resources.
>>
>> probe_resource() will try to find specified size or more in parent bus.
>> If can not find current parent resource, and it will try to expand parents
>> top.
>> If still can not find that specified on top, it will try to reduce target size
>> until find one.
>>
>> It will return 0, if it find any resource that could be used.
>>
>> Returned resource is registered in the tree.
>> So caller may need to use replace_resource to put real resource in tree.
>>
>> -v3: remove two parameters that is for debug purpose.
>> -v4: fix stop_flags checking.
>> -v5: adjust stop_flags checking position to avoid not needed calling
>>        into allocate_resource().
>
> please check attached one that is updated after first patch with
> __allocate_resource changes.
> except this one and first one are changed. left ones are not needed to
> be updated.
> So i'm not going to resend them.

please check update one. -v7

Thanks

Yinghai

Attachment: probe_resource_2.patch
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