2005-04-16 16:20:36 -06:00
|
|
|
#ifndef _LINUX_LIST_H
|
|
|
|
#define _LINUX_LIST_H
|
|
|
|
|
2010-07-02 11:41:14 -06:00
|
|
|
#include <linux/types.h>
|
2005-04-16 16:20:36 -06:00
|
|
|
#include <linux/stddef.h>
|
2006-06-27 03:53:52 -06:00
|
|
|
#include <linux/poison.h>
|
2011-05-19 15:15:29 -06:00
|
|
|
#include <linux/const.h>
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Simple doubly linked list implementation.
|
|
|
|
*
|
|
|
|
* Some of the internal functions ("__xxx") are useful when
|
|
|
|
* manipulating whole lists rather than single entries, as
|
|
|
|
* sometimes we already know the next/prev entries and we can
|
|
|
|
* generate better code by using them directly rather than
|
|
|
|
* using the generic single-entry routines.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#define LIST_HEAD_INIT(name) { &(name), &(name) }
|
|
|
|
|
|
|
|
#define LIST_HEAD(name) \
|
|
|
|
struct list_head name = LIST_HEAD_INIT(name)
|
|
|
|
|
2006-02-03 04:03:56 -07:00
|
|
|
static inline void INIT_LIST_HEAD(struct list_head *list)
|
|
|
|
{
|
|
|
|
list->next = list;
|
|
|
|
list->prev = list;
|
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Insert a new entry between two known consecutive entries.
|
|
|
|
*
|
|
|
|
* This is only for internal list manipulation where we know
|
|
|
|
* the prev/next entries already!
|
|
|
|
*/
|
2006-09-29 02:59:00 -06:00
|
|
|
#ifndef CONFIG_DEBUG_LIST
|
2005-04-16 16:20:36 -06:00
|
|
|
static inline void __list_add(struct list_head *new,
|
|
|
|
struct list_head *prev,
|
|
|
|
struct list_head *next)
|
|
|
|
{
|
|
|
|
next->prev = new;
|
|
|
|
new->next = next;
|
|
|
|
new->prev = prev;
|
|
|
|
prev->next = new;
|
|
|
|
}
|
2006-09-29 02:59:00 -06:00
|
|
|
#else
|
|
|
|
extern void __list_add(struct list_head *new,
|
|
|
|
struct list_head *prev,
|
|
|
|
struct list_head *next);
|
|
|
|
#endif
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* list_add - add a new entry
|
|
|
|
* @new: new entry to be added
|
|
|
|
* @head: list head to add it after
|
|
|
|
*
|
|
|
|
* Insert a new entry after the specified head.
|
|
|
|
* This is good for implementing stacks.
|
|
|
|
*/
|
|
|
|
static inline void list_add(struct list_head *new, struct list_head *head)
|
|
|
|
{
|
|
|
|
__list_add(new, head, head->next);
|
|
|
|
}
|
2006-09-29 02:59:00 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* list_add_tail - add a new entry
|
|
|
|
* @new: new entry to be added
|
|
|
|
* @head: list head to add it before
|
|
|
|
*
|
|
|
|
* Insert a new entry before the specified head.
|
|
|
|
* This is useful for implementing queues.
|
|
|
|
*/
|
|
|
|
static inline void list_add_tail(struct list_head *new, struct list_head *head)
|
|
|
|
{
|
|
|
|
__list_add(new, head->prev, head);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Delete a list entry by making the prev/next entries
|
|
|
|
* point to each other.
|
|
|
|
*
|
|
|
|
* This is only for internal list manipulation where we know
|
|
|
|
* the prev/next entries already!
|
|
|
|
*/
|
|
|
|
static inline void __list_del(struct list_head * prev, struct list_head * next)
|
|
|
|
{
|
|
|
|
next->prev = prev;
|
|
|
|
prev->next = next;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* list_del - deletes entry from list.
|
|
|
|
* @entry: the element to delete from the list.
|
2007-02-10 02:45:59 -07:00
|
|
|
* Note: list_empty() on entry does not return true after this, the entry is
|
2005-04-16 16:20:36 -06:00
|
|
|
* in an undefined state.
|
|
|
|
*/
|
2006-09-29 02:59:00 -06:00
|
|
|
#ifndef CONFIG_DEBUG_LIST
|
2011-02-18 12:32:28 -07:00
|
|
|
static inline void __list_del_entry(struct list_head *entry)
|
|
|
|
{
|
|
|
|
__list_del(entry->prev, entry->next);
|
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
static inline void list_del(struct list_head *entry)
|
|
|
|
{
|
|
|
|
__list_del(entry->prev, entry->next);
|
|
|
|
entry->next = LIST_POISON1;
|
|
|
|
entry->prev = LIST_POISON2;
|
|
|
|
}
|
2006-09-29 02:59:00 -06:00
|
|
|
#else
|
2011-02-18 12:32:28 -07:00
|
|
|
extern void __list_del_entry(struct list_head *entry);
|
2006-09-29 02:59:00 -06:00
|
|
|
extern void list_del(struct list_head *entry);
|
|
|
|
#endif
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-06-23 03:05:54 -06:00
|
|
|
/**
|
|
|
|
* list_replace - replace old entry by new one
|
|
|
|
* @old : the element to be replaced
|
|
|
|
* @new : the new element to insert
|
2007-02-10 02:45:59 -07:00
|
|
|
*
|
|
|
|
* If @old was empty, it will be overwritten.
|
2006-06-23 03:05:54 -06:00
|
|
|
*/
|
|
|
|
static inline void list_replace(struct list_head *old,
|
|
|
|
struct list_head *new)
|
|
|
|
{
|
|
|
|
new->next = old->next;
|
|
|
|
new->next->prev = new;
|
|
|
|
new->prev = old->prev;
|
|
|
|
new->prev->next = new;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void list_replace_init(struct list_head *old,
|
|
|
|
struct list_head *new)
|
|
|
|
{
|
|
|
|
list_replace(old, new);
|
|
|
|
INIT_LIST_HEAD(old);
|
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* list_del_init - deletes entry from list and reinitialize it.
|
|
|
|
* @entry: the element to delete from the list.
|
|
|
|
*/
|
|
|
|
static inline void list_del_init(struct list_head *entry)
|
|
|
|
{
|
2011-02-18 12:32:28 -07:00
|
|
|
__list_del_entry(entry);
|
2005-04-16 16:20:36 -06:00
|
|
|
INIT_LIST_HEAD(entry);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* list_move - delete from one list and add as another's head
|
|
|
|
* @list: the entry to move
|
|
|
|
* @head: the head that will precede our entry
|
|
|
|
*/
|
|
|
|
static inline void list_move(struct list_head *list, struct list_head *head)
|
|
|
|
{
|
2011-02-18 12:32:28 -07:00
|
|
|
__list_del_entry(list);
|
2007-05-12 17:28:35 -06:00
|
|
|
list_add(list, head);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* list_move_tail - delete from one list and add as another's tail
|
|
|
|
* @list: the entry to move
|
|
|
|
* @head: the head that will follow our entry
|
|
|
|
*/
|
|
|
|
static inline void list_move_tail(struct list_head *list,
|
|
|
|
struct list_head *head)
|
|
|
|
{
|
2011-02-18 12:32:28 -07:00
|
|
|
__list_del_entry(list);
|
2007-05-12 17:28:35 -06:00
|
|
|
list_add_tail(list, head);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2006-07-14 01:24:35 -06:00
|
|
|
/**
|
|
|
|
* list_is_last - tests whether @list is the last entry in list @head
|
|
|
|
* @list: the entry to test
|
|
|
|
* @head: the head of the list
|
|
|
|
*/
|
|
|
|
static inline int list_is_last(const struct list_head *list,
|
|
|
|
const struct list_head *head)
|
|
|
|
{
|
|
|
|
return list->next == head;
|
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* list_empty - tests whether a list is empty
|
|
|
|
* @head: the list to test.
|
|
|
|
*/
|
|
|
|
static inline int list_empty(const struct list_head *head)
|
|
|
|
{
|
|
|
|
return head->next == head;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-06-25 06:47:42 -06:00
|
|
|
* list_empty_careful - tests whether a list is empty and not being modified
|
|
|
|
* @head: the list to test
|
|
|
|
*
|
|
|
|
* Description:
|
|
|
|
* tests whether a list is empty _and_ checks that no other CPU might be
|
|
|
|
* in the process of modifying either member (next or prev)
|
2005-04-16 16:20:36 -06:00
|
|
|
*
|
|
|
|
* NOTE: using list_empty_careful() without synchronization
|
|
|
|
* can only be safe if the only activity that can happen
|
|
|
|
* to the list entry is list_del_init(). Eg. it cannot be used
|
|
|
|
* if another CPU could re-list_add() it.
|
|
|
|
*/
|
|
|
|
static inline int list_empty_careful(const struct list_head *head)
|
|
|
|
{
|
|
|
|
struct list_head *next = head->next;
|
|
|
|
return (next == head) && (next == head->prev);
|
2008-04-28 03:14:27 -06:00
|
|
|
}
|
|
|
|
|
2010-01-09 12:53:14 -07:00
|
|
|
/**
|
|
|
|
* list_rotate_left - rotate the list to the left
|
|
|
|
* @head: the head of the list
|
|
|
|
*/
|
|
|
|
static inline void list_rotate_left(struct list_head *head)
|
|
|
|
{
|
|
|
|
struct list_head *first;
|
|
|
|
|
|
|
|
if (!list_empty(head)) {
|
|
|
|
first = head->next;
|
|
|
|
list_move_tail(first, head);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2008-04-28 03:14:27 -06:00
|
|
|
/**
|
|
|
|
* list_is_singular - tests whether a list has just one entry.
|
|
|
|
* @head: the list to test.
|
|
|
|
*/
|
|
|
|
static inline int list_is_singular(const struct list_head *head)
|
|
|
|
{
|
|
|
|
return !list_empty(head) && (head->next == head->prev);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2008-08-06 14:28:54 -06:00
|
|
|
static inline void __list_cut_position(struct list_head *list,
|
|
|
|
struct list_head *head, struct list_head *entry)
|
|
|
|
{
|
|
|
|
struct list_head *new_first = entry->next;
|
|
|
|
list->next = head->next;
|
|
|
|
list->next->prev = list;
|
|
|
|
list->prev = entry;
|
|
|
|
entry->next = list;
|
|
|
|
head->next = new_first;
|
|
|
|
new_first->prev = head;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* list_cut_position - cut a list into two
|
|
|
|
* @list: a new list to add all removed entries
|
|
|
|
* @head: a list with entries
|
|
|
|
* @entry: an entry within head, could be the head itself
|
|
|
|
* and if so we won't cut the list
|
|
|
|
*
|
|
|
|
* This helper moves the initial part of @head, up to and
|
|
|
|
* including @entry, from @head to @list. You should
|
|
|
|
* pass on @entry an element you know is on @head. @list
|
|
|
|
* should be an empty list or a list you do not care about
|
|
|
|
* losing its data.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static inline void list_cut_position(struct list_head *list,
|
|
|
|
struct list_head *head, struct list_head *entry)
|
|
|
|
{
|
|
|
|
if (list_empty(head))
|
|
|
|
return;
|
|
|
|
if (list_is_singular(head) &&
|
|
|
|
(head->next != entry && head != entry))
|
|
|
|
return;
|
|
|
|
if (entry == head)
|
|
|
|
INIT_LIST_HEAD(list);
|
|
|
|
else
|
|
|
|
__list_cut_position(list, head, entry);
|
|
|
|
}
|
|
|
|
|
2008-04-29 01:59:29 -06:00
|
|
|
static inline void __list_splice(const struct list_head *list,
|
2008-08-06 16:21:26 -06:00
|
|
|
struct list_head *prev,
|
|
|
|
struct list_head *next)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
struct list_head *first = list->next;
|
|
|
|
struct list_head *last = list->prev;
|
|
|
|
|
2008-08-06 16:21:26 -06:00
|
|
|
first->prev = prev;
|
|
|
|
prev->next = first;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-08-06 16:21:26 -06:00
|
|
|
last->next = next;
|
|
|
|
next->prev = last;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2008-08-06 16:21:26 -06:00
|
|
|
* list_splice - join two lists, this is designed for stacks
|
2005-04-16 16:20:36 -06:00
|
|
|
* @list: the new list to add.
|
|
|
|
* @head: the place to add it in the first list.
|
|
|
|
*/
|
2008-04-29 01:59:29 -06:00
|
|
|
static inline void list_splice(const struct list_head *list,
|
|
|
|
struct list_head *head)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
if (!list_empty(list))
|
2008-08-06 16:21:26 -06:00
|
|
|
__list_splice(list, head, head->next);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* list_splice_tail - join two lists, each list being a queue
|
|
|
|
* @list: the new list to add.
|
|
|
|
* @head: the place to add it in the first list.
|
|
|
|
*/
|
|
|
|
static inline void list_splice_tail(struct list_head *list,
|
|
|
|
struct list_head *head)
|
|
|
|
{
|
|
|
|
if (!list_empty(list))
|
|
|
|
__list_splice(list, head->prev, head);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* list_splice_init - join two lists and reinitialise the emptied list.
|
|
|
|
* @list: the new list to add.
|
|
|
|
* @head: the place to add it in the first list.
|
|
|
|
*
|
|
|
|
* The list at @list is reinitialised
|
|
|
|
*/
|
|
|
|
static inline void list_splice_init(struct list_head *list,
|
|
|
|
struct list_head *head)
|
|
|
|
{
|
|
|
|
if (!list_empty(list)) {
|
2008-08-06 16:21:26 -06:00
|
|
|
__list_splice(list, head, head->next);
|
|
|
|
INIT_LIST_HEAD(list);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2008-08-08 14:56:20 -06:00
|
|
|
* list_splice_tail_init - join two lists and reinitialise the emptied list
|
2008-08-06 16:21:26 -06:00
|
|
|
* @list: the new list to add.
|
|
|
|
* @head: the place to add it in the first list.
|
|
|
|
*
|
2008-08-08 14:56:20 -06:00
|
|
|
* Each of the lists is a queue.
|
2008-08-06 16:21:26 -06:00
|
|
|
* The list at @list is reinitialised
|
|
|
|
*/
|
|
|
|
static inline void list_splice_tail_init(struct list_head *list,
|
|
|
|
struct list_head *head)
|
|
|
|
{
|
|
|
|
if (!list_empty(list)) {
|
|
|
|
__list_splice(list, head->prev, head);
|
2005-04-16 16:20:36 -06:00
|
|
|
INIT_LIST_HEAD(list);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* list_entry - get the struct for this entry
|
|
|
|
* @ptr: the &struct list_head pointer.
|
|
|
|
* @type: the type of the struct this is embedded in.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*/
|
|
|
|
#define list_entry(ptr, type, member) \
|
|
|
|
container_of(ptr, type, member)
|
|
|
|
|
Introduce a handy list_first_entry macro
There are many places in the kernel where the construction like
foo = list_entry(head->next, struct foo_struct, list);
are used.
The code might look more descriptive and neat if using the macro
list_first_entry(head, type, member) \
list_entry((head)->next, type, member)
Here is the macro itself and the examples of its usage in the generic code.
If it will turn out to be useful, I can prepare the set of patches to
inject in into arch-specific code, drivers, networking, etc.
Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 01:30:19 -06:00
|
|
|
/**
|
|
|
|
* list_first_entry - get the first element from a list
|
|
|
|
* @ptr: the list head to take the element from.
|
|
|
|
* @type: the type of the struct this is embedded in.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*
|
|
|
|
* Note, that list is expected to be not empty.
|
|
|
|
*/
|
|
|
|
#define list_first_entry(ptr, type, member) \
|
|
|
|
list_entry((ptr)->next, type, member)
|
|
|
|
|
2013-11-12 16:10:03 -07:00
|
|
|
/**
|
|
|
|
* list_last_entry - get the last element from a list
|
|
|
|
* @ptr: the list head to take the element from.
|
|
|
|
* @type: the type of the struct this is embedded in.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*
|
|
|
|
* Note, that list is expected to be not empty.
|
|
|
|
*/
|
|
|
|
#define list_last_entry(ptr, type, member) \
|
|
|
|
list_entry((ptr)->prev, type, member)
|
|
|
|
|
2013-05-28 23:02:56 -06:00
|
|
|
/**
|
|
|
|
* list_first_entry_or_null - get the first element from a list
|
|
|
|
* @ptr: the list head to take the element from.
|
|
|
|
* @type: the type of the struct this is embedded in.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*
|
|
|
|
* Note that if the list is empty, it returns NULL.
|
|
|
|
*/
|
|
|
|
#define list_first_entry_or_null(ptr, type, member) \
|
|
|
|
(!list_empty(ptr) ? list_first_entry(ptr, type, member) : NULL)
|
|
|
|
|
2013-11-12 16:10:01 -07:00
|
|
|
/**
|
|
|
|
* list_next_entry - get the next element in list
|
|
|
|
* @pos: the type * to cursor
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*/
|
|
|
|
#define list_next_entry(pos, member) \
|
|
|
|
list_entry((pos)->member.next, typeof(*(pos)), member)
|
|
|
|
|
|
|
|
/**
|
|
|
|
* list_prev_entry - get the prev element in list
|
|
|
|
* @pos: the type * to cursor
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*/
|
|
|
|
#define list_prev_entry(pos, member) \
|
|
|
|
list_entry((pos)->member.prev, typeof(*(pos)), member)
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* list_for_each - iterate over a list
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the &struct list_head to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @head: the head for your list.
|
|
|
|
*/
|
|
|
|
#define list_for_each(pos, head) \
|
2011-05-19 15:15:29 -06:00
|
|
|
for (pos = (head)->next; pos != (head); pos = pos->next)
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* list_for_each_prev - iterate over a list backwards
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the &struct list_head to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @head: the head for your list.
|
|
|
|
*/
|
|
|
|
#define list_for_each_prev(pos, head) \
|
2011-05-19 15:15:29 -06:00
|
|
|
for (pos = (head)->prev; pos != (head); pos = pos->prev)
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/**
|
2006-06-25 06:47:42 -06:00
|
|
|
* list_for_each_safe - iterate over a list safe against removal of list entry
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the &struct list_head to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @n: another &struct list_head to use as temporary storage
|
|
|
|
* @head: the head for your list.
|
|
|
|
*/
|
|
|
|
#define list_for_each_safe(pos, n, head) \
|
|
|
|
for (pos = (head)->next, n = pos->next; pos != (head); \
|
|
|
|
pos = n, n = pos->next)
|
|
|
|
|
2007-10-17 00:29:53 -06:00
|
|
|
/**
|
2007-10-19 00:39:28 -06:00
|
|
|
* list_for_each_prev_safe - iterate over a list backwards safe against removal of list entry
|
2007-10-17 00:29:53 -06:00
|
|
|
* @pos: the &struct list_head to use as a loop cursor.
|
|
|
|
* @n: another &struct list_head to use as temporary storage
|
|
|
|
* @head: the head for your list.
|
|
|
|
*/
|
|
|
|
#define list_for_each_prev_safe(pos, n, head) \
|
|
|
|
for (pos = (head)->prev, n = pos->prev; \
|
2011-05-19 15:15:29 -06:00
|
|
|
pos != (head); \
|
2007-10-17 00:29:53 -06:00
|
|
|
pos = n, n = pos->prev)
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* list_for_each_entry - iterate over list of given type
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*/
|
|
|
|
#define list_for_each_entry(pos, head, member) \
|
2013-11-12 16:10:03 -07:00
|
|
|
for (pos = list_first_entry(head, typeof(*pos), member); \
|
2013-11-12 16:10:02 -07:00
|
|
|
&pos->member != (head); \
|
|
|
|
pos = list_next_entry(pos, member))
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* list_for_each_entry_reverse - iterate backwards over list of given type.
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*/
|
|
|
|
#define list_for_each_entry_reverse(pos, head, member) \
|
2013-11-12 16:10:03 -07:00
|
|
|
for (pos = list_last_entry(head, typeof(*pos), member); \
|
2013-11-12 16:10:02 -07:00
|
|
|
&pos->member != (head); \
|
|
|
|
pos = list_prev_entry(pos, member))
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/**
|
2007-02-10 02:45:59 -07:00
|
|
|
* list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue()
|
2005-04-16 16:20:36 -06:00
|
|
|
* @pos: the type * to use as a start point
|
|
|
|
* @head: the head of the list
|
|
|
|
* @member: the name of the list_struct within the struct.
|
2006-06-25 06:47:42 -06:00
|
|
|
*
|
2007-02-10 02:45:59 -07:00
|
|
|
* Prepares a pos entry for use as a start point in list_for_each_entry_continue().
|
2005-04-16 16:20:36 -06:00
|
|
|
*/
|
|
|
|
#define list_prepare_entry(pos, head, member) \
|
|
|
|
((pos) ? : list_entry(head, typeof(*pos), member))
|
|
|
|
|
|
|
|
/**
|
2006-06-25 06:47:42 -06:00
|
|
|
* list_for_each_entry_continue - continue iteration over list of given type
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
2006-06-25 06:47:42 -06:00
|
|
|
*
|
|
|
|
* Continue to iterate over list of given type, continuing after
|
|
|
|
* the current position.
|
2005-04-16 16:20:36 -06:00
|
|
|
*/
|
|
|
|
#define list_for_each_entry_continue(pos, head, member) \
|
2013-11-12 16:10:02 -07:00
|
|
|
for (pos = list_next_entry(pos, member); \
|
|
|
|
&pos->member != (head); \
|
|
|
|
pos = list_next_entry(pos, member))
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-09-18 14:20:41 -06:00
|
|
|
/**
|
|
|
|
* list_for_each_entry_continue_reverse - iterate backwards from the given point
|
|
|
|
* @pos: the type * to use as a loop cursor.
|
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*
|
|
|
|
* Start to iterate over list of given type backwards, continuing after
|
|
|
|
* the current position.
|
|
|
|
*/
|
|
|
|
#define list_for_each_entry_continue_reverse(pos, head, member) \
|
2013-11-12 16:10:02 -07:00
|
|
|
for (pos = list_prev_entry(pos, member); \
|
|
|
|
&pos->member != (head); \
|
|
|
|
pos = list_prev_entry(pos, member))
|
2007-09-18 14:20:41 -06:00
|
|
|
|
2006-03-20 18:19:17 -07:00
|
|
|
/**
|
2006-06-25 06:47:42 -06:00
|
|
|
* list_for_each_entry_from - iterate over list of given type from the current point
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2006-03-20 18:19:17 -07:00
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
2006-06-25 06:47:42 -06:00
|
|
|
*
|
|
|
|
* Iterate over list of given type, continuing from current position.
|
2006-03-20 18:19:17 -07:00
|
|
|
*/
|
|
|
|
#define list_for_each_entry_from(pos, head, member) \
|
2013-11-12 16:10:02 -07:00
|
|
|
for (; &pos->member != (head); \
|
|
|
|
pos = list_next_entry(pos, member))
|
2006-03-20 18:19:17 -07:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @n: another type * to use as temporary storage
|
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*/
|
|
|
|
#define list_for_each_entry_safe(pos, n, head, member) \
|
2013-11-12 16:10:03 -07:00
|
|
|
for (pos = list_first_entry(head, typeof(*pos), member), \
|
2013-11-12 16:10:02 -07:00
|
|
|
n = list_next_entry(pos, member); \
|
2005-04-16 16:20:36 -06:00
|
|
|
&pos->member != (head); \
|
2013-11-12 16:10:02 -07:00
|
|
|
pos = n, n = list_next_entry(n, member))
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-08-09 21:15:51 -06:00
|
|
|
/**
|
2010-03-05 14:43:17 -07:00
|
|
|
* list_for_each_entry_safe_continue - continue list iteration safe against removal
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2005-08-09 21:15:51 -06:00
|
|
|
* @n: another type * to use as temporary storage
|
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
2006-06-25 06:47:42 -06:00
|
|
|
*
|
|
|
|
* Iterate over list of given type, continuing after current point,
|
|
|
|
* safe against removal of list entry.
|
2005-08-09 21:15:51 -06:00
|
|
|
*/
|
|
|
|
#define list_for_each_entry_safe_continue(pos, n, head, member) \
|
2013-11-12 16:10:02 -07:00
|
|
|
for (pos = list_next_entry(pos, member), \
|
|
|
|
n = list_next_entry(pos, member); \
|
2006-03-20 18:18:05 -07:00
|
|
|
&pos->member != (head); \
|
2013-11-12 16:10:02 -07:00
|
|
|
pos = n, n = list_next_entry(n, member))
|
2006-03-20 18:18:05 -07:00
|
|
|
|
|
|
|
/**
|
2010-03-05 14:43:17 -07:00
|
|
|
* list_for_each_entry_safe_from - iterate over list from current point safe against removal
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2006-03-20 18:18:05 -07:00
|
|
|
* @n: another type * to use as temporary storage
|
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
2006-06-25 06:47:42 -06:00
|
|
|
*
|
|
|
|
* Iterate over list of given type from current point, safe against
|
|
|
|
* removal of list entry.
|
2006-03-20 18:18:05 -07:00
|
|
|
*/
|
|
|
|
#define list_for_each_entry_safe_from(pos, n, head, member) \
|
2013-11-12 16:10:02 -07:00
|
|
|
for (n = list_next_entry(pos, member); \
|
2005-08-09 21:15:51 -06:00
|
|
|
&pos->member != (head); \
|
2013-11-12 16:10:02 -07:00
|
|
|
pos = n, n = list_next_entry(n, member))
|
2005-08-09 21:15:51 -06:00
|
|
|
|
2006-01-09 21:51:31 -07:00
|
|
|
/**
|
2010-03-05 14:43:17 -07:00
|
|
|
* list_for_each_entry_safe_reverse - iterate backwards over list safe against removal
|
2006-06-25 06:47:43 -06:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2006-01-09 21:51:31 -07:00
|
|
|
* @n: another type * to use as temporary storage
|
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the list_struct within the struct.
|
2006-06-25 06:47:42 -06:00
|
|
|
*
|
|
|
|
* Iterate backwards over list of given type, safe against removal
|
|
|
|
* of list entry.
|
2006-01-09 21:51:31 -07:00
|
|
|
*/
|
|
|
|
#define list_for_each_entry_safe_reverse(pos, n, head, member) \
|
2013-11-12 16:10:03 -07:00
|
|
|
for (pos = list_last_entry(head, typeof(*pos), member), \
|
2013-11-12 16:10:02 -07:00
|
|
|
n = list_prev_entry(pos, member); \
|
2006-01-09 21:51:31 -07:00
|
|
|
&pos->member != (head); \
|
2013-11-12 16:10:02 -07:00
|
|
|
pos = n, n = list_prev_entry(n, member))
|
2006-01-09 21:51:31 -07:00
|
|
|
|
2010-06-23 21:02:14 -06:00
|
|
|
/**
|
|
|
|
* list_safe_reset_next - reset a stale list_for_each_entry_safe loop
|
|
|
|
* @pos: the loop cursor used in the list_for_each_entry_safe loop
|
|
|
|
* @n: temporary storage used in list_for_each_entry_safe
|
|
|
|
* @member: the name of the list_struct within the struct.
|
|
|
|
*
|
|
|
|
* list_safe_reset_next is not safe to use in general if the list may be
|
|
|
|
* modified concurrently (eg. the lock is dropped in the loop body). An
|
|
|
|
* exception to this is if the cursor element (pos) is pinned in the list,
|
|
|
|
* and list_safe_reset_next is called after re-taking the lock and before
|
|
|
|
* completing the current iteration of the loop body.
|
|
|
|
*/
|
|
|
|
#define list_safe_reset_next(pos, n, member) \
|
2013-11-12 16:10:02 -07:00
|
|
|
n = list_next_entry(pos, member)
|
2010-06-23 21:02:14 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* Double linked lists with a single pointer list head.
|
|
|
|
* Mostly useful for hash tables where the two pointer list head is
|
|
|
|
* too wasteful.
|
|
|
|
* You lose the ability to access the tail in O(1).
|
|
|
|
*/
|
|
|
|
|
|
|
|
#define HLIST_HEAD_INIT { .first = NULL }
|
|
|
|
#define HLIST_HEAD(name) struct hlist_head name = { .first = NULL }
|
|
|
|
#define INIT_HLIST_HEAD(ptr) ((ptr)->first = NULL)
|
2006-02-03 04:03:56 -07:00
|
|
|
static inline void INIT_HLIST_NODE(struct hlist_node *h)
|
|
|
|
{
|
|
|
|
h->next = NULL;
|
|
|
|
h->pprev = NULL;
|
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
static inline int hlist_unhashed(const struct hlist_node *h)
|
|
|
|
{
|
|
|
|
return !h->pprev;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int hlist_empty(const struct hlist_head *h)
|
|
|
|
{
|
|
|
|
return !h->first;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void __hlist_del(struct hlist_node *n)
|
|
|
|
{
|
|
|
|
struct hlist_node *next = n->next;
|
|
|
|
struct hlist_node **pprev = n->pprev;
|
|
|
|
*pprev = next;
|
|
|
|
if (next)
|
|
|
|
next->pprev = pprev;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void hlist_del(struct hlist_node *n)
|
|
|
|
{
|
|
|
|
__hlist_del(n);
|
|
|
|
n->next = LIST_POISON1;
|
|
|
|
n->pprev = LIST_POISON2;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void hlist_del_init(struct hlist_node *n)
|
|
|
|
{
|
2006-04-28 16:21:23 -06:00
|
|
|
if (!hlist_unhashed(n)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
__hlist_del(n);
|
|
|
|
INIT_HLIST_NODE(n);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h)
|
|
|
|
{
|
|
|
|
struct hlist_node *first = h->first;
|
|
|
|
n->next = first;
|
|
|
|
if (first)
|
|
|
|
first->pprev = &n->next;
|
|
|
|
h->first = n;
|
|
|
|
n->pprev = &h->first;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* next must be != NULL */
|
|
|
|
static inline void hlist_add_before(struct hlist_node *n,
|
|
|
|
struct hlist_node *next)
|
|
|
|
{
|
|
|
|
n->pprev = next->pprev;
|
|
|
|
n->next = next;
|
|
|
|
next->pprev = &n->next;
|
|
|
|
*(n->pprev) = n;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void hlist_add_after(struct hlist_node *n,
|
|
|
|
struct hlist_node *next)
|
|
|
|
{
|
|
|
|
next->next = n->next;
|
|
|
|
n->next = next;
|
|
|
|
next->pprev = &n->next;
|
|
|
|
|
|
|
|
if(next->next)
|
|
|
|
next->next->pprev = &next->next;
|
|
|
|
}
|
|
|
|
|
2010-10-23 13:23:40 -06:00
|
|
|
/* after that we'll appear to be on some hlist and hlist_del will work */
|
|
|
|
static inline void hlist_add_fake(struct hlist_node *n)
|
|
|
|
{
|
|
|
|
n->pprev = &n->next;
|
|
|
|
}
|
|
|
|
|
2008-08-31 15:39:21 -06:00
|
|
|
/*
|
|
|
|
* Move a list from one list head to another. Fixup the pprev
|
|
|
|
* reference of the first entry if it exists.
|
|
|
|
*/
|
|
|
|
static inline void hlist_move_list(struct hlist_head *old,
|
|
|
|
struct hlist_head *new)
|
|
|
|
{
|
|
|
|
new->first = old->first;
|
|
|
|
if (new->first)
|
|
|
|
new->first->pprev = &new->first;
|
|
|
|
old->first = NULL;
|
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
#define hlist_entry(ptr, type, member) container_of(ptr,type,member)
|
|
|
|
|
|
|
|
#define hlist_for_each(pos, head) \
|
2011-05-19 14:50:07 -06:00
|
|
|
for (pos = (head)->first; pos ; pos = pos->next)
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
#define hlist_for_each_safe(pos, n, head) \
|
|
|
|
for (pos = (head)->first; pos && ({ n = pos->next; 1; }); \
|
|
|
|
pos = n)
|
|
|
|
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 18:06:00 -07:00
|
|
|
#define hlist_entry_safe(ptr, type, member) \
|
list: Fix double fetch of pointer in hlist_entry_safe()
The current version of hlist_entry_safe() fetches the pointer twice,
once to test for NULL and the other to compute the offset back to the
enclosing structure. This is OK for normal lock-based use because in
that case, the pointer cannot change. However, when the pointer is
protected by RCU (as in "rcu_dereference(p)"), then the pointer can
change at any time. This use case can result in the following sequence
of events:
1. CPU 0 invokes hlist_entry_safe(), fetches the RCU-protected
pointer as sees that it is non-NULL.
2. CPU 1 invokes hlist_del_rcu(), deleting the entry that CPU 0
just fetched a pointer to. Because this is the last entry
in the list, the pointer fetched by CPU 0 is now NULL.
3. CPU 0 refetches the pointer, obtains NULL, and then gets a
NULL-pointer crash.
This commit therefore applies gcc's "({ })" statement expression to
create a temporary variable so that the specified pointer is fetched
only once, avoiding the above sequence of events. Please note that
it is the caller's responsibility to use rcu_dereference() as needed.
This allows RCU-protected uses to work correctly without imposing
any additional overhead on the non-RCU case.
Many thanks to Eric Dumazet for spotting root cause!
Reported-by: CAI Qian <caiqian@redhat.com>
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Li Zefan <lizefan@huawei.com>
2013-03-09 08:38:41 -07:00
|
|
|
({ typeof(ptr) ____ptr = (ptr); \
|
|
|
|
____ptr ? hlist_entry(____ptr, type, member) : NULL; \
|
|
|
|
})
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 18:06:00 -07:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* hlist_for_each_entry - iterate over list of given type
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 18:06:00 -07:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the hlist_node within the struct.
|
|
|
|
*/
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 18:06:00 -07:00
|
|
|
#define hlist_for_each_entry(pos, head, member) \
|
|
|
|
for (pos = hlist_entry_safe((head)->first, typeof(*(pos)), member);\
|
|
|
|
pos; \
|
|
|
|
pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/**
|
2006-06-25 06:47:42 -06:00
|
|
|
* hlist_for_each_entry_continue - iterate over a hlist continuing after current point
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 18:06:00 -07:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @member: the name of the hlist_node within the struct.
|
|
|
|
*/
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 18:06:00 -07:00
|
|
|
#define hlist_for_each_entry_continue(pos, member) \
|
|
|
|
for (pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member);\
|
|
|
|
pos; \
|
|
|
|
pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/**
|
2006-06-25 06:47:42 -06:00
|
|
|
* hlist_for_each_entry_from - iterate over a hlist continuing from current point
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 18:06:00 -07:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @member: the name of the hlist_node within the struct.
|
|
|
|
*/
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 18:06:00 -07:00
|
|
|
#define hlist_for_each_entry_from(pos, member) \
|
|
|
|
for (; pos; \
|
|
|
|
pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/**
|
|
|
|
* hlist_for_each_entry_safe - iterate over list of given type safe against removal of list entry
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 18:06:00 -07:00
|
|
|
* @pos: the type * to use as a loop cursor.
|
2005-04-16 16:20:36 -06:00
|
|
|
* @n: another &struct hlist_node to use as temporary storage
|
|
|
|
* @head: the head for your list.
|
|
|
|
* @member: the name of the hlist_node within the struct.
|
|
|
|
*/
|
hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 18:06:00 -07:00
|
|
|
#define hlist_for_each_entry_safe(pos, n, head, member) \
|
|
|
|
for (pos = hlist_entry_safe((head)->first, typeof(*pos), member);\
|
|
|
|
pos && ({ n = pos->member.next; 1; }); \
|
|
|
|
pos = hlist_entry_safe(n, typeof(*pos), member))
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
#endif
|