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#ifndef _LINUX_SCHED_H

#define _LINUX_SCHED_H

/*

 * cloning flags:

 */

#define CSIGNAL         0x000000ff      /* signal mask to be sent at exit */

#define CLONE_VM        0x00000100      /* set if VM shared between processes */

#define CLONE_FS        0x00000200      /* set if fs info shared between processes */

#define CLONE_FILES     0x00000400      /* set if open files shared between processes */

#define CLONE_SIGHAND   0x00000800      /* set if signal handlers and blocked signals shared */

#define CLONE_PTRACE    0x00002000      /* set if we want to let tracing continue on the child too */

#define CLONE_VFORK     0x00004000      /* set if the parent wants the child to wake it up on mm_release */

#define CLONE_PARENT    0x00008000      /* set if we want to have the same parent as the cloner */

#define CLONE_THREAD    0x00010000      /* Same thread group? */

#define CLONE_NEWNS     0x00020000      /* New namespace group? */

#define CLONE_SYSVSEM   0x00040000      /* share system V SEM_UNDO semantics */

#define CLONE_SETTLS    0x00080000      /* create a new TLS for the child */

#define CLONE_PARENT_SETTID     0x00100000      /* set the TID in the parent */

#define CLONE_CHILD_CLEARTID    0x00200000      /* clear the TID in the child */

#define CLONE_DETACHED          0x00400000      /* Unused, ignored */

#define CLONE_UNTRACED          0x00800000      /* set if the tracing process can't force CLONE_PTRACE on this clone */

#define CLONE_CHILD_SETTID      0x01000000      /* set the TID in the child */

#define CLONE_STOPPED           0x02000000      /* Start in stopped state */

#define CLONE_NEWUTS            0x04000000      /* New utsname group? */

#define CLONE_NEWIPC            0x08000000      /* New ipcs */

#define CLONE_NEWUSER           0x10000000      /* New user namespace */

#define CLONE_NEWPID            0x20000000      /* New pid namespace */

#define CLONE_NEWNET            0x40000000      /* New network namespace */

/*

 * Scheduling policies

 */

#define SCHED_NORMAL            0

#define SCHED_FIFO              1

#define SCHED_RR                2

#define SCHED_BATCH             3

/* SCHED_ISO: reserved but not implemented yet */

#define SCHED_IDLE              5

#ifdef __KERNEL__

struct sched_param {

        int sched_priority;

};

#include <asm/param.h>  /* for HZ */

#include <linux/capability.h>

#include <linux/threads.h>

#include <linux/kernel.h>

#include <linux/types.h>

#include <linux/timex.h>

#include <linux/jiffies.h>

#include <linux/rbtree.h>

#include <linux/thread_info.h>

#include <linux/cpumask.h>

#include <linux/errno.h>

#include <linux/nodemask.h>

#include <linux/mm_types.h>

#include <asm/system.h>

#include <asm/semaphore.h>

#include <asm/page.h>

#include <asm/ptrace.h>

#include <asm/cputime.h>

#include <linux/smp.h>

#include <linux/sem.h>

#include <linux/signal.h>

#include <linux/securebits.h>

#include <linux/fs_struct.h>

#include <linux/compiler.h>

#include <linux/completion.h>

#include <linux/pid.h>

#include <linux/percpu.h>

#include <linux/topology.h>

#include <linux/proportions.h>

#include <linux/seccomp.h>

#include <linux/rcupdate.h>

#include <linux/futex.h>

#include <linux/rtmutex.h>

#include <linux/time.h>

#include <linux/param.h>

#include <linux/resource.h>

#include <linux/timer.h>

#include <linux/hrtimer.h>

#include <linux/task_io_accounting.h>

#include <linux/kobject.h>

#include <asm/processor.h>

struct exec_domain;

struct futex_pi_state;

struct bio;

/*

 * List of flags we want to share for kernel threads,

 * if only because they are not used by them anyway.

 */

#define CLONE_KERNEL    (CLONE_FS | CLONE_FILES | CLONE_SIGHAND)

/*

 * These are the constant used to fake the fixed-point load-average

 * counting. Some notes:

 *  - 11 bit fractions expand to 22 bits by the multiplies: this gives

 *    a load-average precision of 10 bits integer + 11 bits fractional

 *  - if you want to count load-averages more often, you need more

 *    precision, or rounding will get you. With 2-second counting freq,

 *    the EXP_n values would be 1981, 2034 and 2043 if still using only

 *    11 bit fractions.

 */

extern unsigned long avenrun[];         /* Load averages */

#define FSHIFT          11              /* nr of bits of precision */

#define FIXED_1         (1<<FSHIFT)     /* 1.0 as fixed-point */

#define LOAD_FREQ       (5*HZ+1)        /* 5 sec intervals */

#define EXP_1           1884            /* 1/exp(5sec/1min) as fixed-point */

#define EXP_5           2014            /* 1/exp(5sec/5min) */

#define EXP_15          2037            /* 1/exp(5sec/15min) */

#define CALC_LOAD(load,exp,n) \

        load *= exp; \

        load += n*(FIXED_1-exp); \

        load >>= FSHIFT;

extern unsigned long total_forks;

extern int nr_threads;

DECLARE_PER_CPU(unsigned long, process_counts);

extern int nr_processes(void);

extern unsigned long nr_running(void);

extern unsigned long nr_uninterruptible(void);

extern unsigned long nr_active(void);

extern unsigned long nr_iowait(void);

extern unsigned long weighted_cpuload(const int cpu);

struct seq_file;

struct cfs_rq;

struct task_group;

#ifdef CONFIG_SCHED_DEBUG

extern void proc_sched_show_task(struct task_struct *p, struct seq_file *m);

extern void proc_sched_set_task(struct task_struct *p);

extern void

print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq);

#else

static inline void

proc_sched_show_task(struct task_struct *p, struct seq_file *m)

{

}

static inline void proc_sched_set_task(struct task_struct *p)

{

}

static inline void

print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)

{

}

#endif

/*

 * Task state bitmask. NOTE! These bits are also

 * encoded in fs/proc/array.c: get_task_state().

 *

 * We have two separate sets of flags: task->state

 * is about runnability, while task->exit_state are

 * about the task exiting. Confusing, but this way

 * modifying one set can't modify the other one by

 * mistake.

 */

#define TASK_RUNNING            0

#define TASK_INTERRUPTIBLE      1

#define TASK_UNINTERRUPTIBLE    2

#define TASK_STOPPED            4

#define TASK_TRACED             8

/* in tsk->exit_state */

#define EXIT_ZOMBIE             16

#define EXIT_DEAD               32

/* in tsk->state again */

#define TASK_DEAD               64

#define __set_task_state(tsk, state_value)              \

        do { (tsk)->state = (state_value); } while (0)

#define set_task_state(tsk, state_value)                \

        set_mb((tsk)->state, (state_value))

/*

 * set_current_state() includes a barrier so that the write of current->state

 * is correctly serialised wrt the caller's subsequent test of whether to

 * actually sleep:

 *

 *      set_current_state(TASK_UNINTERRUPTIBLE);

 *      if (do_i_need_to_sleep())

 *              schedule();

 *

 * If the caller does not need such serialisation then use __set_current_state()

 */

#define __set_current_state(state_value)                        \

        do { current->state = (state_value); } while (0)

#define set_current_state(state_value)          \

        set_mb(current->state, (state_value))

/* Task command name length */

#define TASK_COMM_LEN 16

#include <linux/spinlock.h>

/*

 * This serializes "schedule()" and also protects

 * the run-queue from deletions/modifications (but

 * _adding_ to the beginning of the run-queue has

 * a separate lock).

 */

extern rwlock_t tasklist_lock;

extern spinlock_t mmlist_lock;

struct task_struct;

extern void sched_init(void);

extern void sched_init_smp(void);

extern void init_idle(struct task_struct *idle, int cpu);

extern void init_idle_bootup_task(struct task_struct *idle);

extern cpumask_t nohz_cpu_mask;

#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ)

extern int select_nohz_load_balancer(int cpu);

#else

static inline int select_nohz_load_balancer(int cpu)

{

        return 0;

}

#endif

/*

 * Only dump TASK_* tasks. (0 for all tasks)

 */

extern void show_state_filter(unsigned long state_filter);

static inline void show_state(void)

{

        show_state_filter(0);

}

extern void show_regs(struct pt_regs *);

/*

 * TASK is a pointer to the task whose backtrace we want to see (or NULL for current

 * task), SP is the stack pointer of the first frame that should be shown in the back

 * trace (or NULL if the entire call-chain of the task should be shown).

 */

extern void show_stack(struct task_struct *task, unsigned long *sp);

void io_schedule(void);

long io_schedule_timeout(long timeout);

extern void cpu_init (void);

extern void trap_init(void);

extern void account_process_tick(struct task_struct *task, int user);

extern void update_process_times(int user);

extern void scheduler_tick(void);

#ifdef CONFIG_DETECT_SOFTLOCKUP

extern void softlockup_tick(void);

extern void spawn_softlockup_task(void);

extern void touch_softlockup_watchdog(void);

extern void touch_all_softlockup_watchdogs(void);

extern int softlockup_thresh;

#else

static inline void softlockup_tick(void)

{

}

static inline void spawn_softlockup_task(void)

{

}

static inline void touch_softlockup_watchdog(void)

{

}

static inline void touch_all_softlockup_watchdogs(void)

{

}

#endif

/* Attach to any functions which should be ignored in wchan output. */

#define __sched         __attribute__((__section__(".sched.text")))

/* Linker adds these: start and end of __sched functions */

extern char __sched_text_start[], __sched_text_end[];

/* Is this address in the __sched functions? */

extern int in_sched_functions(unsigned long addr);

#define MAX_SCHEDULE_TIMEOUT    LONG_MAX

extern signed long FASTCALL(schedule_timeout(signed long timeout));

extern signed long schedule_timeout_interruptible(signed long timeout);

extern signed long schedule_timeout_uninterruptible(signed long timeout);

asmlinkage void schedule(void);

struct nsproxy;

struct user_namespace;

/* Maximum number of active map areas.. This is a random (large) number */

#define DEFAULT_MAX_MAP_COUNT   65536

extern int sysctl_max_map_count;

#include <linux/aio.h>

extern unsigned long

arch_get_unmapped_area(struct file *, unsigned long, unsigned long,

                       unsigned long, unsigned long);

extern unsigned long

arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,

                          unsigned long len, unsigned long pgoff,

                          unsigned long flags);

extern void arch_unmap_area(struct mm_struct *, unsigned long);

extern void arch_unmap_area_topdown(struct mm_struct *, unsigned long);

#if NR_CPUS >= CONFIG_SPLIT_PTLOCK_CPUS

/*

 * The mm counters are not protected by its page_table_lock,

 * so must be incremented atomically.

 */

#define set_mm_counter(mm, member, value) atomic_long_set(&(mm)->_##member, value)

#define get_mm_counter(mm, member) ((unsigned long)atomic_long_read(&(mm)->_##member))

#define add_mm_counter(mm, member, value) atomic_long_add(value, &(mm)->_##member)

#define inc_mm_counter(mm, member) atomic_long_inc(&(mm)->_##member)

#define dec_mm_counter(mm, member) atomic_long_dec(&(mm)->_##member)

#else  /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */

/*

 * The mm counters are protected by its page_table_lock,

 * so can be incremented directly.

 */

#define set_mm_counter(mm, member, value) (mm)->_##member = (value)

#define get_mm_counter(mm, member) ((mm)->_##member)

#define add_mm_counter(mm, member, value) (mm)->_##member += (value)

#define inc_mm_counter(mm, member) (mm)->_##member++

#define dec_mm_counter(mm, member) (mm)->_##member--

#endif /* NR_CPUS < CONFIG_SPLIT_PTLOCK_CPUS */

#define get_mm_rss(mm)                                  \

        (get_mm_counter(mm, file_rss) + get_mm_counter(mm, anon_rss))

#define update_hiwater_rss(mm)  do {                    \

        unsigned long _rss = get_mm_rss(mm);            \

        if ((mm)->hiwater_rss < _rss)                   \

                (mm)->hiwater_rss = _rss;               \

} while (0)

#define update_hiwater_vm(mm)   do {                    \

        if ((mm)->hiwater_vm < (mm)->total_vm)          \

                (mm)->hiwater_vm = (mm)->total_vm;      \

} while (0)

extern void set_dumpable(struct mm_struct *mm, int value);

extern int get_dumpable(struct mm_struct *mm);

/* mm flags */

/* dumpable bits */

#define MMF_DUMPABLE      0  /* core dump is permitted */

#define MMF_DUMP_SECURELY 1  /* core file is readable only by root */

#define MMF_DUMPABLE_BITS 2

/* coredump filter bits */

#define MMF_DUMP_ANON_PRIVATE   2

#define MMF_DUMP_ANON_SHARED    3

#define MMF_DUMP_MAPPED_PRIVATE 4

#define MMF_DUMP_MAPPED_SHARED  5

#define MMF_DUMP_ELF_HEADERS    6

#define MMF_DUMP_FILTER_SHIFT   MMF_DUMPABLE_BITS

#define MMF_DUMP_FILTER_BITS    5

#define MMF_DUMP_FILTER_MASK \

        (((1 << MMF_DUMP_FILTER_BITS) - 1) << MMF_DUMP_FILTER_SHIFT)

#define MMF_DUMP_FILTER_DEFAULT \

        ((1 << MMF_DUMP_ANON_PRIVATE) | (1 << MMF_DUMP_ANON_SHARED))

struct sighand_struct {

        atomic_t                count;

        struct k_sigaction      action[_NSIG];

        spinlock_t              siglock;

        wait_queue_head_t       signalfd_wqh;

};

struct pacct_struct {

        int                     ac_flag;

        long                    ac_exitcode;

        unsigned long           ac_mem;

        cputime_t               ac_utime, ac_stime;

        unsigned long           ac_minflt, ac_majflt;

};

/*

 * NOTE! "signal_struct" does not have it's own

 * locking, because a shared signal_struct always

 * implies a shared sighand_struct, so locking

 * sighand_struct is always a proper superset of

 * the locking of signal_struct.

 */

struct signal_struct {

        atomic_t                count;

        atomic_t                live;

        wait_queue_head_t       wait_chldexit;  /* for wait4() */

        /* current thread group signal load-balancing target: */

        struct task_struct      *curr_target;

        /* shared signal handling: */

        struct sigpending       shared_pending;

        /* thread group exit support */

        int                     group_exit_code;

        /* overloaded:

         * - notify group_exit_task when ->count is equal to notify_count

         * - everyone except group_exit_task is stopped during signal delivery

         *   of fatal signals, group_exit_task processes the signal.

         */

        struct task_struct      *group_exit_task;

        int                     notify_count;

        /* thread group stop support, overloads group_exit_code too */

        int                     group_stop_count;

        unsigned int            flags; /* see SIGNAL_* flags below */

        /* POSIX.1b Interval Timers */

        struct list_head posix_timers;

        /* ITIMER_REAL timer for the process */

        struct hrtimer real_timer;

        struct task_struct *tsk;

        ktime_t it_real_incr;

        /* ITIMER_PROF and ITIMER_VIRTUAL timers for the process */

        cputime_t it_prof_expires, it_virt_expires;

        cputime_t it_prof_incr, it_virt_incr;

        /* job control IDs */

        /*

         * pgrp and session fields are deprecated.

         * use the task_session_Xnr and task_pgrp_Xnr routines below

         */

        union {

                pid_t pgrp __deprecated;

                pid_t __pgrp;

        };

        struct pid *tty_old_pgrp;

        union {

                pid_t session __deprecated;

                pid_t __session;

        };

        /* boolean value for session group leader */

        int leader;

        struct tty_struct *tty; /* NULL if no tty */

        /*

         * Cumulative resource counters for dead threads in the group,

         * and for reaped dead child processes forked by this group.

         * Live threads maintain their own counters and add to these

         * in __exit_signal, except for the group leader.

         */

        cputime_t utime, stime, cutime, cstime;

        cputime_t gtime;

        cputime_t cgtime;

        unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw;

        unsigned long min_flt, maj_flt, cmin_flt, cmaj_flt;

        unsigned long inblock, oublock, cinblock, coublock;

        /*

         * Cumulative ns of scheduled CPU time for dead threads in the

         * group, not including a zombie group leader.  (This only differs

         * from jiffies_to_ns(utime + stime) if sched_clock uses something

         * other than jiffies.)

         */

        unsigned long long sum_sched_runtime;

        /*

         * We don't bother to synchronize most readers of this at all,

         * because there is no reader checking a limit that actually needs

         * to get both rlim_cur and rlim_max atomically, and either one

         * alone is a single word that can safely be read normally.

         * getrlimit/setrlimit use task_lock(current->group_leader) to

         * protect this instead of the siglock, because they really

         * have no need to disable irqs.

         */

        struct rlimit rlim[RLIM_NLIMITS];

        struct list_head cpu_timers[3];

        /* keep the process-shared keyrings here so that they do the right

         * thing in threads created with CLONE_THREAD */

#ifdef CONFIG_KEYS

        struct key *session_keyring;    /* keyring inherited over fork */

        struct key *process_keyring;    /* keyring private to this process */

#endif

#ifdef CONFIG_BSD_PROCESS_ACCT

        struct pacct_struct pacct;      /* per-process accounting information */

#endif

#ifdef CONFIG_TASKSTATS

        struct taskstats *stats;

#endif

#ifdef CONFIG_AUDIT

        unsigned audit_tty;

        struct tty_audit_buf *tty_audit_buf;

#endif

};

/* Context switch must be unlocked if interrupts are to be enabled */

#ifdef __ARCH_WANT_INTERRUPTS_ON_CTXSW

# define __ARCH_WANT_UNLOCKED_CTXSW

#endif

/*

 * Bits in flags field of signal_struct.

 */

#define SIGNAL_STOP_STOPPED     0x00000001 /* job control stop in effect */

#define SIGNAL_STOP_DEQUEUED    0x00000002 /* stop signal dequeued */

#define SIGNAL_STOP_CONTINUED   0x00000004 /* SIGCONT since WCONTINUED reap */

#define SIGNAL_GROUP_EXIT       0x00000008 /* group exit in progress */

/*

 * Some day this will be a full-fledged user tracking system..

 */

struct user_struct {

        atomic_t __count;       /* reference count */

        atomic_t processes;     /* How many processes does this user have? */

        atomic_t files;         /* How many open files does this user have? */

        atomic_t sigpending;    /* How many pending signals does this user have? */

#ifdef CONFIG_INOTIFY_USER

        atomic_t inotify_watches; /* How many inotify watches does this user have? */

        atomic_t inotify_devs;  /* How many inotify devs does this user have opened? */

#endif

#ifdef CONFIG_POSIX_MQUEUE

        /* protected by mq_lock */

        unsigned long mq_bytes; /* How many bytes can be allocated to mqueue? */

#endif

        unsigned long locked_shm; /* How many pages of mlocked shm ? */

#ifdef CONFIG_KEYS

        struct key *uid_keyring;        /* UID specific keyring */

        struct key *session_keyring;    /* UID's default session keyring */

#endif

        /* Hash table maintenance information */

        struct hlist_node uidhash_node;

        uid_t uid;

#ifdef CONFIG_FAIR_USER_SCHED

        struct task_group *tg;

#ifdef CONFIG_SYSFS

        struct kset kset;

        struct subsys_attribute user_attr;

        struct work_struct work;

#endif

#endif

};

#ifdef CONFIG_FAIR_USER_SCHED

extern int uids_kobject_init(void);

#else

static inline int uids_kobject_init(void) { return 0; }

#endif

extern struct user_struct *find_user(uid_t);

extern struct user_struct root_user;

#define INIT_USER (&root_user)

struct backing_dev_info;

struct reclaim_state;

#if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)

struct sched_info {

        /* cumulative counters */

        unsigned long pcount;         /* # of times run on this cpu */

        unsigned long long cpu_time,  /* time spent on the cpu */

                           run_delay; /* time spent waiting on a runqueue */

        /* timestamps */

        unsigned long long last_arrival,/* when we last ran on a cpu */

                           last_queued; /* when we were last queued to run */

#ifdef CONFIG_SCHEDSTATS

        /* BKL stats */

        unsigned int bkl_count;

#endif

};

#endif /* defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT) */

#ifdef CONFIG_SCHEDSTATS

extern const struct file_operations proc_schedstat_operations;

#endif /* CONFIG_SCHEDSTATS */

#ifdef CONFIG_TASK_DELAY_ACCT

struct task_delay_info {

        spinlock_t      lock;

        unsigned int    flags;  /* Private per-task flags */

        /* For each stat XXX, add following, aligned appropriately

         *

         * struct timespec XXX_start, XXX_end;

         * u64 XXX_delay;

         * u32 XXX_count;

         *

         * Atomicity of updates to XXX_delay, XXX_count protected by

         * single lock above (split into XXX_lock if contention is an issue).

         */

        /*

         * XXX_count is incremented on every XXX operation, the delay

         * associated with the operation is added to XXX_delay.

         * XXX_delay contains the accumulated delay time in nanoseconds.

         */

        struct timespec blkio_start, blkio_end; /* Shared by blkio, swapin */

        u64 blkio_delay;        /* wait for sync block io completion */

        u64 swapin_delay;       /* wait for swapin block io completion */

        u32 blkio_count;        /* total count of the number of sync block */

                                /* io operations performed */

        u32 swapin_count;       /* total count of the number of swapin block */

                                /* io operations performed */

};

#endif  /* CONFIG_TASK_DELAY_ACCT */

static inline int sched_info_on(void)

{

#ifdef CONFIG_SCHEDSTATS

        return 1;

#elif defined(CONFIG_TASK_DELAY_ACCT)

        extern int delayacct_on;

        return delayacct_on;

#else

        return 0;

#endif

}

enum cpu_idle_type {

        CPU_IDLE,

        CPU_NOT_IDLE,

        CPU_NEWLY_IDLE,

        CPU_MAX_IDLE_TYPES

};

/*

 * sched-domains (multiprocessor balancing) declarations:

 */

/*

 * Increase resolution of nice-level calculations:

 */

#define SCHED_LOAD_SHIFT        10

#define SCHED_LOAD_SCALE        (1L << SCHED_LOAD_SHIFT)

#define SCHED_LOAD_SCALE_FUZZ   SCHED_LOAD_SCALE

#ifdef CONFIG_SMP

#define SD_LOAD_BALANCE         1       /* Do load balancing on this domain. */

#define SD_BALANCE_NEWIDLE      2       /* Balance when about to become idle */

#define SD_BALANCE_EXEC         4       /* Balance on exec */

#define SD_BALANCE_FORK         8       /* Balance on fork, clone */

#define SD_WAKE_IDLE            16      /* Wake to idle CPU on task wakeup */

#define SD_WAKE_AFFINE          32      /* Wake task to waking CPU */

#define SD_WAKE_BALANCE         64      /* Perform balancing at task wakeup */

#define SD_SHARE_CPUPOWER       128     /* Domain members share cpu power */

#define SD_POWERSAVINGS_BALANCE 256     /* Balance for power savings */

#define SD_SHARE_PKG_RESOURCES  512     /* Domain members share cpu pkg resources */

#define SD_SERIALIZE            1024    /* Only a single load balancing instance */

#define BALANCE_FOR_MC_POWER    \

        (sched_smt_power_savings ? SD_POWERSAVINGS_BALANCE : 0)

#define BALANCE_FOR_PKG_POWER   \

        ((sched_mc_power_savings || sched_smt_power_savings) ?  \

         SD_POWERSAVINGS_BALANCE : 0)

#define test_sd_parent(sd, flag)        ((sd->parent &&         \

                                         (sd->parent->flags & flag)) ? 1 : 0)

struct sched_group {

        struct sched_group *next;       /* Must be a circular list */

        cpumask_t cpumask;

        /*

         * CPU power of this group, SCHED_LOAD_SCALE being max power for a

         * single CPU. This is read only (except for setup, hotplug CPU).

         * Note : Never change cpu_power without recompute its reciprocal

         */

        unsigned int __cpu_power;

        /*

         * reciprocal value of cpu_power to avoid expensive divides

         * (see include/linux/reciprocal_div.h)

         */

        u32 reciprocal_cpu_power;

};

struct sched_domain {

        /* These fields must be setup */

        struct sched_domain *parent;    /* top domain must be null terminated */

        struct sched_domain *child;     /* bottom domain must be null terminated */

        struct sched_group *groups;     /* the balancing groups of the domain */

        cpumask_t span;                 /* span of all CPUs in this domain */

        unsigned long min_interval;     /* Minimum balance interval ms */

        unsigned long max_interval;     /* Maximum balance interval ms */

        unsigned int busy_factor;       /* less balancing by factor if busy */

        unsigned int imbalance_pct;     /* No balance until over watermark */

        unsigned int cache_nice_tries;  /* Leave cache hot tasks for # tries */

        unsigned int busy_idx;

        unsigned int idle_idx;

        unsigned int newidle_idx;

        unsigned int wake_idx;

        unsigned int forkexec_idx;

        int flags;                      /* See SD_* */

        /* Runtime fields. */

        unsigned long last_balance;     /* init to jiffies. units in jiffies */

        unsigned int balance_interval;  /* initialise to 1. units in ms. */

        unsigned int nr_balance_failed; /* initialise to 0 */

#ifdef CONFIG_SCHEDSTATS

        /* load_balance() stats */

        unsigned int lb_count[CPU_MAX_IDLE_TYPES];

        unsigned int lb_failed[CPU_MAX_IDLE_TYPES];

        unsigned int lb_balanced[CPU_MAX_IDLE_TYPES];

        unsigned int lb_imbalance[CPU_MAX_IDLE_TYPES];

        unsigned int lb_gained[CPU_MAX_IDLE_TYPES];

        unsigned int lb_hot_gained[CPU_MAX_IDLE_TYPES];

        unsigned int lb_nobusyg[CPU_MAX_IDLE_TYPES];

        unsigned int lb_nobusyq[CPU_MAX_IDLE_TYPES];

        /* Active load balancing */

        unsigned int alb_count;

        unsigned int alb_failed;

        unsigned int alb_pushed;

        /* SD_BALANCE_EXEC stats */

        unsigned int sbe_count;

        unsigned int sbe_balanced;

        unsigned int sbe_pushed;

        /* SD_BALANCE_FORK stats */

        unsigned int sbf_count;

        unsigned int sbf_balanced;

        unsigned int sbf_pushed;

        /* try_to_wake_up() stats */

        unsigned int ttwu_wake_remote;

        unsigned int ttwu_move_affine;

        unsigned int ttwu_move_balance;

#endif