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#ifndef _LINUX_SCHED_H
#define _LINUX_SCHED_H
#include <xeno/config.h>
#include <xeno/types.h>
#include <xeno/spinlock.h>
#include <asm/page.h>
#include <asm/ptrace.h>
#include <xeno/smp.h>
#include <asm/processor.h>
#include <asm/current.h>
#include <hypervisor-ifs/hypervisor-if.h>
#include <xeno/dom0_ops.h>
extern unsigned long volatile jiffies;
extern rwlock_t tasklist_lock;
#include <xeno/spinlock.h>
struct mm_struct {
unsigned long cpu_vm_mask;
/*
* Every domain has a L1 pagetable of its own. Per-domain mappings
* are put in this table (eg. the current GDT is mapped here).
*/
l2_pgentry_t *perdomain_pt;
pagetable_t pagetable;
/* Current LDT selector. */
unsigned int ldt_sel;
/* Next entry is passed to LGDT on domain switch. */
char gdt[6];
};
/* Convenient accessor for mm.gdt. */
#define SET_GDT_ENTRIES(_p, _e) ((*(u16 *)((_p)->mm.gdt + 0)) = (_e))
#define SET_GDT_ADDRESS(_p, _a) ((*(u32 *)((_p)->mm.gdt + 2)) = (_a))
#define GET_GDT_ENTRIES(_p) ((*(u16 *)((_p)->mm.gdt + 0)))
#define GET_GDT_ADDRESS(_p) ((*(u32 *)((_p)->mm.gdt + 2)))
extern struct mm_struct init_mm;
#define IDLE0_MM \
{ \
cpu_vm_mask: 0, \
perdomain_pt: 0, \
pagetable: mk_pagetable(__pa(idle0_pg_table)) \
}
#define _HYP_EVENT_NEED_RESCHED 0
#define _HYP_EVENT_NET_RX 1
#define _HYP_EVENT_DIE 2
#define PF_DONEFPUINIT 0x1 /* Has the FPU been initialised for this task? */
#define PF_USEDFPU 0x2 /* Has this task used the FPU since last save? */
#define PF_GUEST_STTS 0x4 /* Has the guest OS requested 'stts'? */
#include <xeno/vif.h>
#include <xeno/block.h>
#include <xeno/segment.h>
struct task_struct {
int processor;
int state;
int hyp_events;
unsigned int domain;
/* An unsafe pointer into a shared data area. */
shared_info_t *shared_info;
struct list_head pg_head;
unsigned int tot_pages; /* number of pages currently possesed */
unsigned int max_pages; /* max number of pages that can be possesed */
/* Network I/O */
net_ring_t *net_ring_base;
net_vif_t *net_vif_list[MAX_GUEST_VIFS];
int num_net_vifs;
/* Block I/O */
blk_ring_t *blk_ring_base;
unsigned int blk_req_cons; /* request consumer */
unsigned int blk_resp_prod; /* (private version of) response producer */
struct list_head blkdev_list;
spinlock_t blk_ring_lock;
segment_t *segment_list[XEN_MAX_SEGMENTS]; /* vhd */
int segment_count;
int has_cpu, policy, counter;
struct list_head run_list;
struct mm_struct mm;
/* We need this lock to check page types and frob reference counts. */
spinlock_t page_lock;
mm_segment_t addr_limit; /* thread address space:
0-0xBFFFFFFF for user-thead
0-0xFFFFFFFF for kernel-thread
*/
/*
* active_mm stays for now. It's entangled in the tricky TLB flushing
* stuff which I haven't addressed yet. It stays until I'm man enough
* to venture in.
*/
struct mm_struct *active_mm;
struct thread_struct thread;
struct task_struct *prev_task, *next_task;
unsigned long flags;
atomic_t refcnt;
};
/*
* domain states
* TASK_RUNNING: Domain is runable and should be on a run queue
* TASK_INTERRUPTIBLE: Domain is blocked by may be woken up by an event
* or expiring timer
* TASK_UNINTERRUPTIBLE: Domain is blocked but may not be woken up by an
* arbitrary event or timer.
* TASK_WAIT: Domains CPU allocation expired.
* TASK_STOPPED: not really used in Xen
* TASK_DYING: Domain is about to cross over to the land of the dead.
*/
#define TASK_RUNNING 0
#define TASK_INTERRUPTIBLE 1
#define TASK_UNINTERRUPTIBLE 2
#define TASK_WAIT 4
#define TASK_DYING 16
/* #define TASK_STOPPED 8 not really used */
#define SCHED_YIELD 0x10
#include <asm/uaccess.h> /* for KERNEL_DS */
#define IDLE0_TASK(_t) \
{ \
processor: 0, \
domain: IDLE_DOMAIN_ID, \
state: TASK_RUNNING, \
has_cpu: 0, \
mm: IDLE0_MM, \
addr_limit: KERNEL_DS, \
active_mm: &idle0_task.mm, \
thread: INIT_THREAD, \
prev_task: &(_t), \
next_task: &(_t) \
}
#define IDLE_DOMAIN_ID (~0)
#define is_idle_task(_p) ((_p)->domain == IDLE_DOMAIN_ID)
#ifndef IDLE0_TASK_SIZE
#define IDLE0_TASK_SIZE 2048*sizeof(long)
#endif
union task_union {
struct task_struct task;
unsigned long stack[IDLE0_TASK_SIZE/sizeof(long)];
};
extern union task_union idle0_task_union;
extern struct task_struct first_task_struct;
extern struct task_struct *do_newdomain(unsigned int dom_id, unsigned int cpu);
extern int setup_guestos(struct task_struct *p, dom0_newdomain_t *params);
extern int final_setup_guestos(struct task_struct *p, dom_meminfo_t *);
struct task_struct *find_domain_by_id(unsigned int dom);
extern void release_task(struct task_struct *);
extern void kill_domain(void);
extern void kill_domain_with_errmsg(const char *err);
extern long kill_other_domain(unsigned int dom, int force);
/* arch/process.c */
void new_thread(struct task_struct *p,
unsigned long start_pc,
unsigned long start_stack,
unsigned long start_info);
extern void flush_thread(void);
extern void exit_thread(void);
/* Linux puts these here for some reason! */
extern int request_irq(unsigned int,
void (*handler)(int, void *, struct pt_regs *),
unsigned long, const char *, void *);
extern void free_irq(unsigned int, void *);
extern unsigned long wait_init_idle;
#define init_idle() clear_bit(smp_processor_id(), &wait_init_idle);
/*
* Scheduler functions (in schedule.c)
*/
#define set_current_state(_s) do { current->state = (_s); } while (0)
#define MAX_SCHEDULE_TIMEOUT LONG_MAX
void scheduler_init(void);
void schedulers_start(void);
void sched_add_domain(struct task_struct *p);
void sched_rem_domain(struct task_struct *p);
int wake_up(struct task_struct *p);
long schedule_timeout(long timeout);
long do_yield(void);
void reschedule(struct task_struct *p);
asmlinkage void schedule(void);
#define signal_pending(_p) ((_p)->hyp_events || \
(_p)->shared_info->events)
void domain_init(void);
void cpu_idle(void);
#define REMOVE_LINKS(p) do { \
(p)->next_task->prev_task = (p)->prev_task; \
(p)->prev_task->next_task = (p)->next_task; \
} while (0)
#define SET_LINKS(p) do { \
(p)->next_task = &idle0_task; \
(p)->prev_task = idle0_task.prev_task; \
idle0_task.prev_task->next_task = (p); \
idle0_task.prev_task = (p); \
} while (0)
extern void update_process_times(int user);
#endif
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