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include/linux/kernel.h: add typeof_member() macro

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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>
This commit is contained in:
Alexey Dobriyan 2019-07-16 16:26:42 -07:00 committed by Linus Torvalds
parent c6c405336b
commit ce251e0e3c
1 changed files with 2 additions and 0 deletions
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include/linux/kernel.h
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@ -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) \