diff options
Diffstat (limited to 'sys/contrib/openzfs/config/kernel-flush_dcache_page.m4')
| -rw-r--r-- | sys/contrib/openzfs/config/kernel-flush_dcache_page.m4 | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/config/kernel-flush_dcache_page.m4 b/sys/contrib/openzfs/config/kernel-flush_dcache_page.m4 new file mode 100644 index 000000000000..2340c386ef57 --- /dev/null +++ b/sys/contrib/openzfs/config/kernel-flush_dcache_page.m4 @@ -0,0 +1,26 @@ +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]) + ]) +]) |