mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 14:40:53 +07:00
2f137d66fb
A small cleanup while changing adjacent code. Extern is not needed for functions and only one declaration had it so remove it from the odd line. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Jack Miller <millerjo@us.ibm.com> Cc: Davidlohr Bueso <davidlohr@hp.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
#ifndef _LINUX_SHM_H_
|
|
#define _LINUX_SHM_H_
|
|
|
|
#include <linux/list.h>
|
|
#include <asm/page.h>
|
|
#include <uapi/linux/shm.h>
|
|
#include <asm/shmparam.h>
|
|
|
|
struct shmid_kernel /* private to the kernel */
|
|
{
|
|
struct kern_ipc_perm shm_perm;
|
|
struct file *shm_file;
|
|
unsigned long shm_nattch;
|
|
unsigned long shm_segsz;
|
|
time_t shm_atim;
|
|
time_t shm_dtim;
|
|
time_t shm_ctim;
|
|
pid_t shm_cprid;
|
|
pid_t shm_lprid;
|
|
struct user_struct *mlock_user;
|
|
|
|
/* The task created the shm object. NULL if the task is dead. */
|
|
struct task_struct *shm_creator;
|
|
struct list_head shm_clist; /* list by creator */
|
|
};
|
|
|
|
/* shm_mode upper byte flags */
|
|
#define SHM_DEST 01000 /* segment will be destroyed on last detach */
|
|
#define SHM_LOCKED 02000 /* segment will not be swapped */
|
|
#define SHM_HUGETLB 04000 /* segment will use huge TLB pages */
|
|
#define SHM_NORESERVE 010000 /* don't check for reservations */
|
|
|
|
/* Bits [26:31] are reserved */
|
|
|
|
/*
|
|
* When SHM_HUGETLB is set bits [26:31] encode the log2 of the huge page size.
|
|
* This gives us 6 bits, which is enough until someone invents 128 bit address
|
|
* spaces.
|
|
*
|
|
* Assume these are all power of twos.
|
|
* When 0 use the default page size.
|
|
*/
|
|
#define SHM_HUGE_SHIFT 26
|
|
#define SHM_HUGE_MASK 0x3f
|
|
#define SHM_HUGE_2MB (21 << SHM_HUGE_SHIFT)
|
|
#define SHM_HUGE_1GB (30 << SHM_HUGE_SHIFT)
|
|
|
|
#ifdef CONFIG_SYSVIPC
|
|
struct sysv_shm {
|
|
struct list_head shm_clist;
|
|
};
|
|
|
|
long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr,
|
|
unsigned long shmlba);
|
|
int is_file_shm_hugepages(struct file *file);
|
|
void exit_shm(struct task_struct *task);
|
|
#define shm_init_task(task) INIT_LIST_HEAD(&(task)->sysvshm.shm_clist)
|
|
#else
|
|
struct sysv_shm {
|
|
/* empty */
|
|
};
|
|
|
|
static inline long do_shmat(int shmid, char __user *shmaddr,
|
|
int shmflg, unsigned long *addr,
|
|
unsigned long shmlba)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
static inline int is_file_shm_hugepages(struct file *file)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void exit_shm(struct task_struct *task)
|
|
{
|
|
}
|
|
static inline void shm_init_task(struct task_struct *task)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /* _LINUX_SHM_H_ */
|