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    SubjectRe: [Resend with Ack][PATCH v1] PCI: allow acpiphp to handle PCIe ports without native PCIe hotplug capability
    On Mon, Jul 9, 2012 at 4:05 AM, Jiang Liu <jiang.liu@huawei.com> wrote:
    > Hi Bjorn and Yinghai,
    > What's the policy to export a symbol by EXPORT_SYMBOL()
    > or EXPORT_SYMBOL_GPL()? I know the legal difference, but don't
    > know when I should mark a symbol as GPL.

    From Documentation/DocBook/kernel-hacking.tmpl,

    EXPORT_SYMBOL_GPL implies that the function is considered
    an internal implementation issue, and not really an interface.

    So I use EXPORT_SYMBOL_GPL unless I'm willing to support the symbol as
    an interface indefinitely.

    Bjorn


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