提交 de5d9bf6 编写于 作者: C Chris Metcalf

Move list types from <linux/list.h> to <linux/types.h>.

This allows a list_head (or hlist_head, etc.) to be used from places
that used to be impractical, in particular <asm/processor.h>, which
used to cause include file recursion: <linux/list.h> includes
<linux/prefetch.h>, which always includes <asm/processor.h> for the
prefetch macros, as well as <asm/system.h>, which often includes
<asm/processor.h> directly or indirectly.

This avoids a lot of painful workaround hackery on the tile
architecture, where we use a list_head in the thread_struct to chain
together tasks that are activated on a particular hardwall.
Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>
Reviewed-by: NMatthew Wilcox <willy@linux.intel.com>
上级 b51cae21
#ifndef _LINUX_LIST_H
#define _LINUX_LIST_H
#include <linux/types.h>
#include <linux/stddef.h>
#include <linux/poison.h>
#include <linux/prefetch.h>
......@@ -16,10 +17,6 @@
* using the generic single-entry routines.
*/
struct list_head {
struct list_head *next, *prev;
};
#define LIST_HEAD_INIT(name) { &(name), &(name) }
#define LIST_HEAD(name) \
......@@ -551,14 +548,6 @@ static inline void list_splice_tail_init(struct list_head *list,
* You lose the ability to access the tail in O(1).
*/
struct hlist_head {
struct hlist_node *first;
};
struct hlist_node {
struct hlist_node *next, **pprev;
};
#define HLIST_HEAD_INIT { .first = NULL }
#define HLIST_HEAD(name) struct hlist_head name = { .first = NULL }
#define INIT_HLIST_HEAD(ptr) ((ptr)->first = NULL)
......
......@@ -197,6 +197,18 @@ typedef struct {
} atomic64_t;
#endif
struct list_head {
struct list_head *next, *prev;
};
struct hlist_head {
struct hlist_node *first;
};
struct hlist_node {
struct hlist_node *next, **pprev;
};
struct ustat {
__kernel_daddr_t f_tfree;
__kernel_ino_t f_tinode;
......
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