From: Simon Glass <simon.glass@canonical.com> Add the sizeof_field() macro which returns the size of a struct field. This is used by Linux kernel code including ext4. Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com> Signed-off-by: Simon Glass <simon.glass@canonical.com> --- include/linux/stddef.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/stddef.h b/include/linux/stddef.h index c732eef65ac..deeffc96360 100644 --- a/include/linux/stddef.h +++ b/include/linux/stddef.h @@ -17,4 +17,12 @@ #undef offsetof #define offsetof(TYPE, MEMBER) __builtin_offsetof(TYPE, MEMBER) +/** + * sizeof_field() - Report the size of a struct field in bytes + * + * @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)) + #endif -- 2.43.0