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authorAlexey Dobriyan <adobriyan@gmail.com>2019-07-16 16:26:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-16 19:23:21 -0700
commitce251e0e3c0597ea8cab5787df579bd1f9c1aca1 (patch)
tree87e3c6a3833e52cf72f06a97f4808eee7267b77b /include/linux
parentc6c405336bd3b0ebd1d76aaf9ea88b35dba77e61 (diff)
include/linux/kernel.h: add typeof_member() macro
Add typeof_member() macro so that types can be extracted without introducing dummy variables. Link: http://lkml.kernel.org/r/20190529190720.GA5703@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/kernel.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 0c9bc231107f..4fa360a13c1e 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -88,6 +88,8 @@
*/
#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
+#define typeof_member(T, m) typeof(((T*)0)->m)
+
#define DIV_ROUND_UP __KERNEL_DIV_ROUND_UP
#define DIV_ROUND_DOWN_ULL(ll, d) \