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