kernel-zero_page.m4

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    1 dnl #
    2 dnl # ZERO_PAGE() is an alias for emtpy_zero_page. On certain architectures
    3 dnl # this is a GPL exported variable.
    4 dnl #
    5 
    6 dnl #
    7 dnl # Checking if ZERO_PAGE is exported GPL-only
    8 dnl #
    9 AC_DEFUN([ZFS_AC_KERNEL_SRC_ZERO_PAGE], [
   10         ZFS_LINUX_TEST_SRC([zero_page], [
   11                 #include <asm/pgtable.h>
   12         ], [
   13                 struct page *p __attribute__ ((unused));
   14                 p = ZERO_PAGE(0);
   15         ], [], [ZFS_META_LICENSE])
   16 ])
   17 
   18 AC_DEFUN([ZFS_AC_KERNEL_ZERO_PAGE], [
   19         AC_MSG_CHECKING([whether ZERO_PAGE() is GPL-only])
   20         ZFS_LINUX_TEST_RESULT([zero_page_license], [
   21                 AC_MSG_RESULT(no)
   22         ], [
   23                 AC_MSG_RESULT(yes)
   24                 AC_DEFINE(HAVE_ZERO_PAGE_GPL_ONLY, 1,
   25                     [ZERO_PAGE() is GPL-only])
   26         ])
   27 ])

Cache object: 64dbd7e9072ab9d1ac6b157e8777641f

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/config/kernel-zero_page.m4

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/config/kernel-zero_page.m4