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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klist.h (1922B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 *	klist.h - Some generic list helpers, extending struct list_head a bit.
      4 *
      5 *	Implementations are found in lib/klist.c
      6 *
      7 *	Copyright (C) 2005 Patrick Mochel
      8 */
      9
     10#ifndef _LINUX_KLIST_H
     11#define _LINUX_KLIST_H
     12
     13#include <linux/spinlock.h>
     14#include <linux/kref.h>
     15#include <linux/list.h>
     16
     17struct klist_node;
     18struct klist {
     19	spinlock_t		k_lock;
     20	struct list_head	k_list;
     21	void			(*get)(struct klist_node *);
     22	void			(*put)(struct klist_node *);
     23} __attribute__ ((aligned (sizeof(void *))));
     24
     25#define KLIST_INIT(_name, _get, _put)					\
     26	{ .k_lock	= __SPIN_LOCK_UNLOCKED(_name.k_lock),		\
     27	  .k_list	= LIST_HEAD_INIT(_name.k_list),			\
     28	  .get		= _get,						\
     29	  .put		= _put, }
     30
     31#define DEFINE_KLIST(_name, _get, _put)					\
     32	struct klist _name = KLIST_INIT(_name, _get, _put)
     33
     34extern void klist_init(struct klist *k, void (*get)(struct klist_node *),
     35		       void (*put)(struct klist_node *));
     36
     37struct klist_node {
     38	void			*n_klist;	/* never access directly */
     39	struct list_head	n_node;
     40	struct kref		n_ref;
     41};
     42
     43extern void klist_add_tail(struct klist_node *n, struct klist *k);
     44extern void klist_add_head(struct klist_node *n, struct klist *k);
     45extern void klist_add_behind(struct klist_node *n, struct klist_node *pos);
     46extern void klist_add_before(struct klist_node *n, struct klist_node *pos);
     47
     48extern void klist_del(struct klist_node *n);
     49extern void klist_remove(struct klist_node *n);
     50
     51extern int klist_node_attached(struct klist_node *n);
     52
     53
     54struct klist_iter {
     55	struct klist		*i_klist;
     56	struct klist_node	*i_cur;
     57};
     58
     59
     60extern void klist_iter_init(struct klist *k, struct klist_iter *i);
     61extern void klist_iter_init_node(struct klist *k, struct klist_iter *i,
     62				 struct klist_node *n);
     63extern void klist_iter_exit(struct klist_iter *i);
     64extern struct klist_node *klist_prev(struct klist_iter *i);
     65extern struct klist_node *klist_next(struct klist_iter *i);
     66
     67#endif