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27 lines
728 B
Plaintext
27 lines
728 B
Plaintext
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dnl #
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dnl # Starting from Linux 5.13, flush_dcache_page() becomes an inline
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dnl # function and may indirectly referencing GPL-only cpu_feature_keys on
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dnl # powerpc
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dnl #
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dnl #
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dnl # Checking if flush_dcache_page is exported GPL-only
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_FLUSH_DCACHE_PAGE], [
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ZFS_LINUX_TEST_SRC([flush_dcache_page], [
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#include <asm/cacheflush.h>
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], [
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flush_dcache_page(0);
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], [], [ZFS_META_LICENSE])
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])
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AC_DEFUN([ZFS_AC_KERNEL_FLUSH_DCACHE_PAGE], [
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AC_MSG_CHECKING([whether flush_dcache_page() is GPL-only])
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ZFS_LINUX_TEST_RESULT([flush_dcache_page_license], [
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AC_MSG_RESULT(no)
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], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_FLUSH_DCACHE_PAGE_GPL_ONLY, 1,
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[flush_dcache_page() is GPL-only])
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])
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])
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