请问__devinit是干什么用的？

Question

如题，加了该前缀的函数什么时候执行？
和__init有什么区别？
谢谢

[ 本帖最后由 APLEE 于 2009-4-7 10:12 编辑 ]

Answer 1

The "dev" is short for "device"

Documentation/pci.txt

Please mark the initialization and cleanup functions where appropriate
(the corresponding macros are defined in <linux/init.h>):

        __init          Initialization code. Thrown away after the
driver
                        initializes.
        __exit          Exit code. Ignored for non-modular drivers.
        __devinit       Device initialization code. Identical to __init
if
                        the kernel is not compiled with CONFIG_HOTPLUG,
normal
                        function otherwise.
        __devexit       The same for __exit.

Tips:
        The module_init()/module_exit() functions (and all
initialization
        functions called only from these) should be marked __init/exit.
        The struct pci_driver shouldn't be marked with any of these
tags.
        The ID table array should be marked __devinitdata.
        The probe() and remove() functions (and all initialization
        functions called only from these) should be marked
__devinit/exit.
        If you are sure the driver is not a hotplug driver then use only
        __init/exit __initdata/exitdata.

        Pointers to functions marked as __devexit must be created using
        __devexit_p(function_name).  That will generate the function
        name or NULL if the __devexit function will be discarded.

Answer 2

谢谢

Answer 3

这些文档都在哪个目录下呢？

Answer 4

原帖由 emmoblin 于 2009-4-7 23:04 发表
这些文档都在哪个目录下呢？

同问

Answer 5

原帖由 emmoblin 于 2009-4-7 23:04 发表
这些文档都在哪个目录下呢？

source code      /Document/pci/