# \[PATCH v2 4/4\] include: Remove FIELD\_SIZEOF() and sizeof\_field() macros

- From: Kees Cook \<hidden\>
- Date: 2019-10-10 23:24:22 
- List: netdev
- Page: https://ratatoskr.run/netdev/2019/10/164784
- Thread: https://ratatoskr.run/netdev/2019/10/164783/t.md

```text
From: Pankaj Bharadiya <redacted>

The common function used to find struct member size is sizeof_member().
Remove the now unused FIELD_SIZEOF() and sizeof_field() macros.

Signed-off-by: Pankaj Bharadiya <redacted>
Link: https://lore.kernel.org/r/20190924105839.110713-5-pankaj.laxminarayan.bharadiya@intel.com
Co-developed-by: Kees Cook <redacted>
Signed-off-by: Kees Cook <redacted>
---
 include/linux/kernel.h | 9 ---------
 include/linux/stddef.h | 8 --------
 2 files changed, 17 deletions(-)

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index d83d403dac2e..d67020250d75 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -79,15 +79,6 @@
  */
 #define round_down(x, y) ((x) & ~__round_mask(x, y))
 
-/**
- * FIELD_SIZEOF - get the size of a struct's field
- * @t: the target struct
- * @f: the target struct's field
- * Return: the size of @f in the struct definition without having a
- * declared instance of @t.
- */
-#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
diff --git a/include/linux/stddef.h b/include/linux/stddef.h
index ecadb736c853..74b5e644d50a 100644
--- a/include/linux/stddef.h
+++ b/include/linux/stddef.h
@@ -19,14 +19,6 @@ enum {
 #define offsetof(TYPE, MEMBER)	((size_t)&((TYPE *)0)->MEMBER)
 #endif
 
-/**
- * sizeof_field(TYPE, MEMBER)
- *
- * @TYPE: The structure containing the field of interest
- * @MEMBER: The field to return the size of
- */
-#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
-
 /**
  * sizeof_member(TYPE, MEMBER) - get the size of a struct's member
  *
-- 
2.17.1

```