cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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container_of.h (1421B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LINUX_CONTAINER_OF_H
      3#define _LINUX_CONTAINER_OF_H
      4
      5#include <linux/build_bug.h>
      6#include <linux/err.h>
      7
      8#define typeof_member(T, m)	typeof(((T*)0)->m)
      9
     10/**
     11 * container_of - cast a member of a structure out to the containing structure
     12 * @ptr:	the pointer to the member.
     13 * @type:	the type of the container struct this is embedded in.
     14 * @member:	the name of the member within the struct.
     15 *
     16 */
     17#define container_of(ptr, type, member) ({				\
     18	void *__mptr = (void *)(ptr);					\
     19	static_assert(__same_type(*(ptr), ((type *)0)->member) ||	\
     20		      __same_type(*(ptr), void),			\
     21		      "pointer type mismatch in container_of()");	\
     22	((type *)(__mptr - offsetof(type, member))); })
     23
     24/**
     25 * container_of_safe - cast a member of a structure out to the containing structure
     26 * @ptr:	the pointer to the member.
     27 * @type:	the type of the container struct this is embedded in.
     28 * @member:	the name of the member within the struct.
     29 *
     30 * If IS_ERR_OR_NULL(ptr), ptr is returned unchanged.
     31 */
     32#define container_of_safe(ptr, type, member) ({				\
     33	void *__mptr = (void *)(ptr);					\
     34	static_assert(__same_type(*(ptr), ((type *)0)->member) ||	\
     35		      __same_type(*(ptr), void),			\
     36		      "pointer type mismatch in container_of_safe()");	\
     37	IS_ERR_OR_NULL(__mptr) ? ERR_CAST(__mptr) :			\
     38		((type *)(__mptr - offsetof(type, member))); })
     39
     40#endif	/* _LINUX_CONTAINER_OF_H */