#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_NEWNS 0x00020000 /* New mount 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_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 */
+/* 0x02000000 was previously the unused CLONE_STOPPED (Start in stopped state)
+ and is now available for re-use. */
+#define CLONE_NEWUTS 0x04000000 /* New utsname namespace */
+#define CLONE_NEWIPC 0x08000000 /* New ipc namespace */
#define CLONE_NEWUSER 0x10000000 /* New user namespace */
#define CLONE_NEWPID 0x20000000 /* New pid namespace */
#define CLONE_NEWNET 0x40000000 /* New network namespace */
#define SCHED_BATCH 3
/* SCHED_ISO: reserved but not implemented yet */
#define SCHED_IDLE 5
+#define SCHED_DEADLINE 6
-#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/page.h>
-#include <asm/ptrace.h>
-#include <asm/cputime.h>
-
-#include <linux/smp.h>
-#include <linux/sem.h>
-#include <linux/signal.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/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 <linux/latencytop.h>
-#include <linux/cred.h>
-
-#include <asm/processor.h>
-
-struct mem_cgroup;
-struct exec_domain;
-struct futex_pi_state;
-struct robust_list_head;
-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);
-
-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
-
-extern unsigned long long time_sync_thresh;
-
-/*
- * 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 TASK_WAKEKILL 128
-
-/* Convenience macros for the sake of set_task_state */
-#define TASK_KILLABLE (TASK_WAKEKILL | TASK_UNINTERRUPTIBLE)
-#define TASK_STOPPED (TASK_WAKEKILL | __TASK_STOPPED)
-#define TASK_TRACED (TASK_WAKEKILL | __TASK_TRACED)
-
-/* Convenience macros for the sake of wake_up */
-#define TASK_NORMAL (TASK_INTERRUPTIBLE | TASK_UNINTERRUPTIBLE)
-#define TASK_ALL (TASK_NORMAL | __TASK_STOPPED | __TASK_TRACED)
-
-/* get_task_state() */
-#define TASK_REPORT (TASK_RUNNING | TASK_INTERRUPTIBLE | \
- TASK_UNINTERRUPTIBLE | __TASK_STOPPED | \
- __TASK_TRACED)
-
-#define task_is_traced(task) ((task->state & __TASK_TRACED) != 0)
-#define task_is_stopped(task) ((task->state & __TASK_STOPPED) != 0)
-#define task_is_stopped_or_traced(task) \
- ((task->state & (__TASK_STOPPED | __TASK_TRACED)) != 0)
-#define task_contributes_to_load(task) \
- ((task->state & TASK_UNINTERRUPTIBLE) != 0)
-
-#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 asmlinkage void schedule_tail(struct task_struct *prev);
-extern void init_idle(struct task_struct *idle, int cpu);
-extern void init_idle_bootup_task(struct task_struct *idle);
-
-extern int runqueue_is_locked(void);
-
-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
-
-extern unsigned long rt_needs_cpu(int cpu);
-
-/*
- * 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);
-extern void hrtick_resched(void);
-
-extern void sched_show_task(struct task_struct *p);
-
-#ifdef CONFIG_DETECT_SOFTLOCKUP
-extern void softlockup_tick(void);
-extern void touch_softlockup_watchdog(void);
-extern void touch_all_softlockup_watchdogs(void);
-extern unsigned int softlockup_panic;
-extern unsigned long sysctl_hung_task_check_count;
-extern unsigned long sysctl_hung_task_timeout_secs;
-extern unsigned long sysctl_hung_task_warnings;
-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 schedule_timeout(signed long timeout);
-extern signed long schedule_timeout_interruptible(signed long timeout);
-extern signed long schedule_timeout_killable(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 pid *leader_pid;
- 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;
- struct task_io_accounting ioac;
-
- /*
- * 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 */
-/*
- * Pending notifications to parent.
- */
-#define SIGNAL_CLD_STOPPED 0x00000010
-#define SIGNAL_CLD_CONTINUED 0x00000020
-#define SIGNAL_CLD_MASK (SIGNAL_CLD_STOPPED|SIGNAL_CLD_CONTINUED)
-
-#define SIGNAL_UNKILLABLE 0x00000040 /* for init: ignore fatal signals */
-
-/* If true, all threads except ->group_exit_task have pending SIGKILL */
-static inline int signal_group_exit(const struct signal_struct *sig)
-{
- return (sig->flags & SIGNAL_GROUP_EXIT) ||
- (sig->group_exit_task != NULL);
-}
-
-/*
- * 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_USER_SCHED
- struct task_group *tg;
-#ifdef CONFIG_SYSFS
- struct kobject kobj;
- struct work_struct work;
-#endif
-#endif
-};
-
-extern int uids_sysfs_init(void);
-
-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 */
-
- struct timespec freepages_start, freepages_end;
- u64 freepages_delay; /* wait for memory reclaim */
- u32 freepages_count; /* total count of memory reclaim */
-};
-#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 SD_WAKE_IDLE_FAR 2048 /* Gain latency sacrificing cache hit */
-
-#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;
-};
-
-enum sched_domain_level {
- SD_LV_NONE = 0,
- SD_LV_SIBLING,
- SD_LV_MC,
- SD_LV_CPU,
- SD_LV_NODE,
- SD_LV_ALLNODES,
- SD_LV_MAX
-};
-
-struct sched_domain_attr {
- int relax_domain_level;
-};
-
-#define SD_ATTR_INIT (struct sched_domain_attr) { \
- .relax_domain_level = -1, \
-}
-
-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_* */
- enum sched_domain_level level;
-
- /* 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 */
-
- u64 last_update;
-
-#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
-};
-
-extern void partition_sched_domains(int ndoms_new, cpumask_t *doms_new,
- struct sched_domain_attr *dattr_new);
-extern int arch_reinit_sched_domains(void);
-
-#else /* CONFIG_SMP */
-
-struct sched_domain_attr;
-
-static inline void
-partition_sched_domains(int ndoms_new, cpumask_t *doms_new,
- struct sched_domain_attr *dattr_new)
-{
-}
-#endif /* !CONFIG_SMP */
-
-struct io_context; /* See blkdev.h */
-#define NGROUPS_SMALL 32
-#define NGROUPS_PER_BLOCK ((unsigned int)(PAGE_SIZE / sizeof(gid_t)))
-struct group_info {
- int ngroups;
- atomic_t usage;
- gid_t small_block[NGROUPS_SMALL];
- int nblocks;
- gid_t *blocks[0];
-};
-
-/*
- * get_group_info() must be called with the owning task locked (via task_lock())
- * when task != current. The reason being that the vast majority of callers are
- * looking at current->group_info, which can not be changed except by the
- * current task. Changing current->group_info requires the task lock, too.
- */
-#define get_group_info(group_info) do { \
- atomic_inc(&(group_info)->usage); \
-} while (0)
-
-#define put_group_info(group_info) do { \
- if (atomic_dec_and_test(&(group_info)->usage)) \
- groups_free(group_info); \
-} while (0)
-
-extern struct group_info *groups_alloc(int gidsetsize);
-extern void groups_free(struct group_info *group_info);
-extern int set_current_groups(struct group_info *group_info);
-extern int groups_search(struct group_info *group_info, gid_t grp);
-/* access the groups "array" with this macro */
-#define GROUP_AT(gi, i) \
- ((gi)->blocks[(i)/NGROUPS_PER_BLOCK][(i)%NGROUPS_PER_BLOCK])
-
-#ifdef ARCH_HAS_PREFETCH_SWITCH_STACK
-extern void prefetch_stack(struct task_struct *t);
-#else
-static inline void prefetch_stack(struct task_struct *t) { }
-#endif
-
-struct audit_context; /* See audit.c */
-struct mempolicy;
-struct pipe_inode_info;
-struct uts_namespace;
-
-struct rq;
-struct sched_domain;
-
-struct sched_class {
- const struct sched_class *next;
-
- void (*enqueue_task) (struct rq *rq, struct task_struct *p, int wakeup);
- void (*dequeue_task) (struct rq *rq, struct task_struct *p, int sleep);
- void (*yield_task) (struct rq *rq);
- int (*select_task_rq)(struct task_struct *p, int sync);
-
- void (*check_preempt_curr) (struct rq *rq, struct task_struct *p);
-
- struct task_struct * (*pick_next_task) (struct rq *rq);
- void (*put_prev_task) (struct rq *rq, struct task_struct *p);
-
-#ifdef CONFIG_SMP
- unsigned long (*load_balance) (struct rq *this_rq, int this_cpu,
- struct rq *busiest, unsigned long max_load_move,
- struct sched_domain *sd, enum cpu_idle_type idle,
- int *all_pinned, int *this_best_prio);
-
- int (*move_one_task) (struct rq *this_rq, int this_cpu,
- struct rq *busiest, struct sched_domain *sd,
- enum cpu_idle_type idle);
- void (*pre_schedule) (struct rq *this_rq, struct task_struct *task);
- void (*post_schedule) (struct rq *this_rq);
- void (*task_wake_up) (struct rq *this_rq, struct task_struct *task);
-#endif
-
- void (*set_curr_task) (struct rq *rq);
- void (*task_tick) (struct rq *rq, struct task_struct *p, int queued);
- void (*task_new) (struct rq *rq, struct task_struct *p);
- void (*set_cpus_allowed)(struct task_struct *p,
- const cpumask_t *newmask);
-
- void (*rq_online)(struct rq *rq);
- void (*rq_offline)(struct rq *rq);
-
- void (*switched_from) (struct rq *this_rq, struct task_struct *task,
- int running);
- void (*switched_to) (struct rq *this_rq, struct task_struct *task,
- int running);
- void (*prio_changed) (struct rq *this_rq, struct task_struct *task,
- int oldprio, int running);
-
-#ifdef CONFIG_FAIR_GROUP_SCHED
- void (*moved_group) (struct task_struct *p);
-#endif
-};
-
-struct load_weight {
- unsigned long weight, inv_weight;
-};
+/* Can be ORed in to make sure the process is reverted back to SCHED_NORMAL on fork */
+#define SCHED_RESET_ON_FORK 0x40000000
/*
- * CFS stats for a schedulable entity (task, task-group etc)
- *
- * Current field usage histogram:
- *
- * 4 se->block_start
- * 4 se->run_node
- * 4 se->sleep_start
- * 6 se->load.weight
+ * For the sched_{set,get}attr() calls
*/
-struct sched_entity {
- struct load_weight load; /* for load-balancing */
- struct rb_node run_node;
- struct list_head group_node;
- unsigned int on_rq;
-
- u64 exec_start;
- u64 sum_exec_runtime;
- u64 vruntime;
- u64 prev_sum_exec_runtime;
-
- u64 last_wakeup;
- u64 avg_overlap;
-
-#ifdef CONFIG_SCHEDSTATS
- u64 wait_start;
- u64 wait_max;
- u64 wait_count;
- u64 wait_sum;
-
- u64 sleep_start;
- u64 sleep_max;
- s64 sum_sleep_runtime;
-
- u64 block_start;
- u64 block_max;
- u64 exec_max;
- u64 slice_max;
-
- u64 nr_migrations;
- u64 nr_migrations_cold;
- u64 nr_failed_migrations_affine;
- u64 nr_failed_migrations_running;
- u64 nr_failed_migrations_hot;
- u64 nr_forced_migrations;
- u64 nr_forced2_migrations;
-
- u64 nr_wakeups;
- u64 nr_wakeups_sync;
- u64 nr_wakeups_migrate;
- u64 nr_wakeups_local;
- u64 nr_wakeups_remote;
- u64 nr_wakeups_affine;
- u64 nr_wakeups_affine_attempts;
- u64 nr_wakeups_passive;
- u64 nr_wakeups_idle;
-#endif
-
-#ifdef CONFIG_FAIR_GROUP_SCHED
- struct sched_entity *parent;
- /* rq on which this entity is (to be) queued: */
- struct cfs_rq *cfs_rq;
- /* rq "owned" by this entity/group: */
- struct cfs_rq *my_q;
-#endif
-};
-
-struct sched_rt_entity {
- struct list_head run_list;
- unsigned int time_slice;
- unsigned long timeout;
- int nr_cpus_allowed;
-
- struct sched_rt_entity *back;
-#ifdef CONFIG_RT_GROUP_SCHED
- struct sched_rt_entity *parent;
- /* rq on which this entity is (to be) queued: */
- struct rt_rq *rt_rq;
- /* rq "owned" by this entity/group: */
- struct rt_rq *my_q;
-#endif
-};
-
-struct task_struct {
- volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
- void *stack;
- atomic_t usage;
- unsigned int flags; /* per process flags, defined below */
- unsigned int ptrace;
-
- int lock_depth; /* BKL lock depth */
-
-#ifdef CONFIG_SMP
-#ifdef __ARCH_WANT_UNLOCKED_CTXSW
- int oncpu;
-#endif
-#endif
-
- int prio, static_prio, normal_prio;
- unsigned int rt_priority;
- const struct sched_class *sched_class;
- struct sched_entity se;
- struct sched_rt_entity rt;
-
-#ifdef CONFIG_PREEMPT_NOTIFIERS
- /* list of struct preempt_notifier: */
- struct hlist_head preempt_notifiers;
-#endif
-
- /*
- * fpu_counter contains the number of consecutive context switches
- * that the FPU is used. If this is over a threshold, the lazy fpu
- * saving becomes unlazy to save the trap. This is an unsigned char
- * so that after 256 times the counter wraps and the behavior turns
- * lazy again; this to deal with bursty apps that only use FPU for
- * a short time
- */
- unsigned char fpu_counter;
- s8 oomkilladj; /* OOM kill score adjustment (bit shift). */
-#ifdef CONFIG_BLK_DEV_IO_TRACE
- unsigned int btrace_seq;
-#endif
-
- unsigned int policy;
- cpumask_t cpus_allowed;
-
-#ifdef CONFIG_PREEMPT_RCU
- int rcu_read_lock_nesting;
- int rcu_flipctr_idx;
-#endif /* #ifdef CONFIG_PREEMPT_RCU */
-
-#if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)
- struct sched_info sched_info;
-#endif
-
- struct list_head tasks;
-
- struct mm_struct *mm, *active_mm;
-
-/* task state */
- struct linux_binfmt *binfmt;
- int exit_state;
- int exit_code, exit_signal;
- int pdeath_signal; /* The signal sent when the parent dies */
- /* ??? */
- unsigned int personality;
- unsigned did_exec:1;
- pid_t pid;
- pid_t tgid;
-
-#ifdef CONFIG_CC_STACKPROTECTOR
- /* Canary value for the -fstack-protector gcc feature */
- unsigned long stack_canary;
-#endif
- /*
- * pointers to (original) parent process, youngest child, younger sibling,
- * older sibling, respectively. (p->father can be replaced with
- * p->real_parent->pid)
- */
- struct task_struct *real_parent; /* real parent process */
- struct task_struct *parent; /* recipient of SIGCHLD, wait4() reports */
- /*
- * children/sibling forms the list of my natural children
- */
- struct list_head children; /* list of my children */
- struct list_head sibling; /* linkage in my parent's children list */
- struct task_struct *group_leader; /* threadgroup leader */
-
- /*
- * ptraced is the list of tasks this task is using ptrace on.
- * This includes both natural children and PTRACE_ATTACH targets.
- * p->ptrace_entry is p's link on the p->parent->ptraced list.
- */
- struct list_head ptraced;
- struct list_head ptrace_entry;
-
- /* PID/PID hash table linkage. */
- struct pid_link pids[PIDTYPE_MAX];
- struct list_head thread_group;
-
- struct completion *vfork_done; /* for vfork() */
- int __user *set_child_tid; /* CLONE_CHILD_SETTID */
- int __user *clear_child_tid; /* CLONE_CHILD_CLEARTID */
-
- cputime_t utime, stime, utimescaled, stimescaled;
- cputime_t gtime;
- cputime_t prev_utime, prev_stime;
- unsigned long nvcsw, nivcsw; /* context switch counts */
- struct timespec start_time; /* monotonic time */
- struct timespec real_start_time; /* boot based time */
-/* mm fault and swap info: this can arguably be seen as either mm-specific or thread-specific */
- unsigned long min_flt, maj_flt;
-
- cputime_t it_prof_expires, it_virt_expires;
- unsigned long long it_sched_expires;
- struct list_head cpu_timers[3];
-
-/* process credentials */
- uid_t uid,euid,suid,fsuid;
- gid_t gid,egid,sgid,fsgid;
- struct group_info *group_info;
- kernel_cap_t cap_effective, cap_inheritable, cap_permitted, cap_bset;
- struct user_struct *user;
- unsigned securebits;
-#ifdef CONFIG_KEYS
- unsigned char jit_keyring; /* default keyring to attach requested keys to */
- struct key *request_key_auth; /* assumed request_key authority */
- struct key *thread_keyring; /* keyring private to this thread */
-#endif
- char comm[TASK_COMM_LEN]; /* executable name excluding path
- - access with [gs]et_task_comm (which lock
- it with task_lock())
- - initialized normally by flush_old_exec */
-/* file system info */
- int link_count, total_link_count;
-#ifdef CONFIG_SYSVIPC
-/* ipc stuff */
- struct sysv_sem sysvsem;
-#endif
-#ifdef CONFIG_DETECT_SOFTLOCKUP
-/* hung task detection */
- unsigned long last_switch_timestamp;
- unsigned long last_switch_count;
-#endif
-/* CPU-specific state of this task */
- struct thread_struct thread;
-/* filesystem information */
- struct fs_struct *fs;
-/* open file information */
- struct files_struct *files;
-/* namespaces */
- struct nsproxy *nsproxy;
-/* signal handlers */
- struct signal_struct *signal;
- struct sighand_struct *sighand;
-
- sigset_t blocked, real_blocked;
- sigset_t saved_sigmask; /* restored if set_restore_sigmask() was used */
- struct sigpending pending;
-
- unsigned long sas_ss_sp;
- size_t sas_ss_size;
- int (*notifier)(void *priv);
- void *notifier_data;
- sigset_t *notifier_mask;
-#ifdef CONFIG_SECURITY
- void *security;
-#endif
- struct audit_context *audit_context;
-#ifdef CONFIG_AUDITSYSCALL
- uid_t loginuid;
- unsigned int sessionid;
-#endif
- seccomp_t seccomp;
-
-/* Thread group tracking */
- u32 parent_exec_id;
- u32 self_exec_id;
-/* Protection of (de-)allocation: mm, files, fs, tty, keyrings */
- spinlock_t alloc_lock;
-
- /* Protection of the PI data structures: */
- spinlock_t pi_lock;
-
-#ifdef CONFIG_RT_MUTEXES
- /* PI waiters blocked on a rt_mutex held by this task */
- struct plist_head pi_waiters;
- /* Deadlock detection and priority inheritance handling */
- struct rt_mutex_waiter *pi_blocked_on;
-#endif
-
-#ifdef CONFIG_DEBUG_MUTEXES
- /* mutex deadlock detection */
- struct mutex_waiter *blocked_on;
-#endif
-#ifdef CONFIG_TRACE_IRQFLAGS
- unsigned int irq_events;
- int hardirqs_enabled;
- unsigned long hardirq_enable_ip;
- unsigned int hardirq_enable_event;
- unsigned long hardirq_disable_ip;
- unsigned int hardirq_disable_event;
- int softirqs_enabled;
- unsigned long softirq_disable_ip;
- unsigned int softirq_disable_event;
- unsigned long softirq_enable_ip;
- unsigned int softirq_enable_event;
- int hardirq_context;
- int softirq_context;
-#endif
-#ifdef CONFIG_LOCKDEP
-# define MAX_LOCK_DEPTH 48UL
- u64 curr_chain_key;
- int lockdep_depth;
- unsigned int lockdep_recursion;
- struct held_lock held_locks[MAX_LOCK_DEPTH];
-#endif
-
-/* journalling filesystem info */
- void *journal_info;
-
-/* stacked block device info */
- struct bio *bio_list, **bio_tail;
-
-/* VM state */
- struct reclaim_state *reclaim_state;
-
- struct backing_dev_info *backing_dev_info;
-
- struct io_context *io_context;
-
- unsigned long ptrace_message;
- siginfo_t *last_siginfo; /* For ptrace use. */
- struct task_io_accounting ioac;
-#if defined(CONFIG_TASK_XACCT)
- u64 acct_rss_mem1; /* accumulated rss usage */
- u64 acct_vm_mem1; /* accumulated virtual memory usage */
- cputime_t acct_timexpd; /* stime + utime since last update */
-#endif
-#ifdef CONFIG_CPUSETS
- nodemask_t mems_allowed;
- int cpuset_mems_generation;
- int cpuset_mem_spread_rotor;
-#endif
-#ifdef CONFIG_CGROUPS
- /* Control Group info protected by css_set_lock */
- struct css_set *cgroups;
- /* cg_list protected by css_set_lock and tsk->alloc_lock */
- struct list_head cg_list;
-#endif
-#ifdef CONFIG_FUTEX
- struct robust_list_head __user *robust_list;
-#ifdef CONFIG_COMPAT
- struct compat_robust_list_head __user *compat_robust_list;
-#endif
- struct list_head pi_state_list;
- struct futex_pi_state *pi_state_cache;
-#endif
-#ifdef CONFIG_NUMA
- struct mempolicy *mempolicy;
- short il_next;
-#endif
- atomic_t fs_excl; /* holding fs exclusive resources */
- struct rcu_head rcu;
-
- struct list_head *scm_work_list;
-
-/*
- * cache last used pipe for splice
- */
- struct pipe_inode_info *splice_pipe;
-#ifdef CONFIG_TASK_DELAY_ACCT
- struct task_delay_info *delays;
-#endif
-#ifdef CONFIG_FAULT_INJECTION
- int make_it_fail;
-#endif
- struct prop_local_single dirties;
-#ifdef CONFIG_LATENCYTOP
- int latency_record_count;
- struct latency_record latency_record[LT_SAVECOUNT];
-#endif
-};
-
-/*
- * Priority of a process goes from 0..MAX_PRIO-1, valid RT
- * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH
- * tasks are in the range MAX_RT_PRIO..MAX_PRIO-1. Priority
- * values are inverted: lower p->prio value means higher priority.
- *
- * The MAX_USER_RT_PRIO value allows the actual maximum
- * RT priority to be separate from the value exported to
- * user-space. This allows kernel threads to set their
- * priority to a value higher than any user task. Note:
- * MAX_RT_PRIO must not be smaller than MAX_USER_RT_PRIO.
- */
-
-#define MAX_USER_RT_PRIO 100
-#define MAX_RT_PRIO MAX_USER_RT_PRIO
-
-#define MAX_PRIO (MAX_RT_PRIO + 40)
-#define DEFAULT_PRIO (MAX_RT_PRIO + 20)
-
-static inline int rt_prio(int prio)
-{
- if (unlikely(prio < MAX_RT_PRIO))
- return 1;
- return 0;
-}
-
-static inline int rt_task(struct task_struct *p)
-{
- return rt_prio(p->prio);
-}
-
-static inline void set_task_session(struct task_struct *tsk, pid_t session)
-{
- tsk->signal->__session = session;
-}
-
-static inline void set_task_pgrp(struct task_struct *tsk, pid_t pgrp)
-{
- tsk->signal->__pgrp = pgrp;
-}
-
-static inline struct pid *task_pid(struct task_struct *task)
-{
- return task->pids[PIDTYPE_PID].pid;
-}
-
-static inline struct pid *task_tgid(struct task_struct *task)
-{
- return task->group_leader->pids[PIDTYPE_PID].pid;
-}
-
-static inline struct pid *task_pgrp(struct task_struct *task)
-{
- return task->group_leader->pids[PIDTYPE_PGID].pid;
-}
-
-static inline struct pid *task_session(struct task_struct *task)
-{
- return task->group_leader->pids[PIDTYPE_SID].pid;
-}
-
-struct pid_namespace;
-
-/*
- * the helpers to get the task's different pids as they are seen
- * from various namespaces
- *
- * task_xid_nr() : global id, i.e. the id seen from the init namespace;
- * task_xid_vnr() : virtual id, i.e. the id seen from the pid namespace of
- * current.
- * task_xid_nr_ns() : id seen from the ns specified;
- *
- * set_task_vxid() : assigns a virtual id to a task;
- *
- * see also pid_nr() etc in include/linux/pid.h
- */
-
-static inline pid_t task_pid_nr(struct task_struct *tsk)
-{
- return tsk->pid;
-}
-
-pid_t task_pid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
-
-static inline pid_t task_pid_vnr(struct task_struct *tsk)
-{
- return pid_vnr(task_pid(tsk));
-}
-
-
-static inline pid_t task_tgid_nr(struct task_struct *tsk)
-{
- return tsk->tgid;
-}
-
-pid_t task_tgid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
-
-static inline pid_t task_tgid_vnr(struct task_struct *tsk)
-{
- return pid_vnr(task_tgid(tsk));
-}
-
-
-static inline pid_t task_pgrp_nr(struct task_struct *tsk)
-{
- return tsk->signal->__pgrp;
-}
-
-pid_t task_pgrp_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
-
-static inline pid_t task_pgrp_vnr(struct task_struct *tsk)
-{
- return pid_vnr(task_pgrp(tsk));
-}
-
-
-static inline pid_t task_session_nr(struct task_struct *tsk)
-{
- return tsk->signal->__session;
-}
-
-pid_t task_session_nr_ns(struct task_struct *tsk, struct pid_namespace *ns);
-
-static inline pid_t task_session_vnr(struct task_struct *tsk)
-{
- return pid_vnr(task_session(tsk));
-}
-
-
-/**
- * pid_alive - check that a task structure is not stale
- * @p: Task structure to be checked.
- *
- * Test if a process is not yet dead (at most zombie state)
- * If pid_alive fails, then pointers within the task structure
- * can be stale and must not be dereferenced.
- */
-static inline int pid_alive(struct task_struct *p)
-{
- return p->pids[PIDTYPE_PID].pid != NULL;
-}
-
-/**
- * is_global_init - check if a task structure is init
- * @tsk: Task structure to be checked.
- *
- * Check if a task structure is the first user space task the kernel created.
- */
-static inline int is_global_init(struct task_struct *tsk)
-{
- return tsk->pid == 1;
-}
-
-/*
- * is_container_init:
- * check whether in the task is init in its own pid namespace.
- */
-extern int is_container_init(struct task_struct *tsk);
-
-extern struct pid *cad_pid;
-
-extern void free_task(struct task_struct *tsk);
-#define get_task_struct(tsk) do { atomic_inc(&(tsk)->usage); } while(0)
-
-extern void __put_task_struct(struct task_struct *t);
-
-static inline void put_task_struct(struct task_struct *t)
-{
- if (atomic_dec_and_test(&t->usage))
- __put_task_struct(t);
-}
-
-extern cputime_t task_utime(struct task_struct *p);
-extern cputime_t task_stime(struct task_struct *p);
-extern cputime_t task_gtime(struct task_struct *p);
-
-/*
- * Per process flags
- */
-#define PF_ALIGNWARN 0x00000001 /* Print alignment warning msgs */
- /* Not implemented yet, only for 486*/
-#define PF_STARTING 0x00000002 /* being created */
-#define PF_EXITING 0x00000004 /* getting shut down */
-#define PF_EXITPIDONE 0x00000008 /* pi exit done on shut down */
-#define PF_VCPU 0x00000010 /* I'm a virtual CPU */
-#define PF_FORKNOEXEC 0x00000040 /* forked but didn't exec */
-#define PF_SUPERPRIV 0x00000100 /* used super-user privileges */
-#define PF_DUMPCORE 0x00000200 /* dumped core */
-#define PF_SIGNALED 0x00000400 /* killed by a signal */
-#define PF_MEMALLOC 0x00000800 /* Allocating memory */
-#define PF_FLUSHER 0x00001000 /* responsible for disk writeback */
-#define PF_USED_MATH 0x00002000 /* if unset the fpu must be initialized before use */
-#define PF_NOFREEZE 0x00008000 /* this thread should not be frozen */
-#define PF_FROZEN 0x00010000 /* frozen for system suspend */
-#define PF_FSTRANS 0x00020000 /* inside a filesystem transaction */
-#define PF_KSWAPD 0x00040000 /* I am kswapd */
-#define PF_SWAPOFF 0x00080000 /* I am in swapoff */
-#define PF_LESS_THROTTLE 0x00100000 /* Throttle me less: I clean memory */
-#define PF_KTHREAD 0x00200000 /* I am a kernel thread */
-#define PF_RANDOMIZE 0x00400000 /* randomize virtual address space */
-#define PF_SWAPWRITE 0x00800000 /* Allowed to write to swap */
-#define PF_SPREAD_PAGE 0x01000000 /* Spread page cache over cpuset */
-#define PF_SPREAD_SLAB 0x02000000 /* Spread some slab caches over cpuset */
-#define PF_THREAD_BOUND 0x04000000 /* Thread bound to specific cpu */
-#define PF_MEMPOLICY 0x10000000 /* Non-default NUMA mempolicy */
-#define PF_MUTEX_TESTER 0x20000000 /* Thread belongs to the rt mutex tester */
-#define PF_FREEZER_SKIP 0x40000000 /* Freezer should not count it as freezeable */
-#define PF_FREEZER_NOSIG 0x80000000 /* Freezer won't send signals to it */
-
-/*
- * Only the _current_ task can read/write to tsk->flags, but other
- * tasks can access tsk->flags in readonly mode for example
- * with tsk_used_math (like during threaded core dumping).
- * There is however an exception to this rule during ptrace
- * or during fork: the ptracer task is allowed to write to the
- * child->flags of its traced child (same goes for fork, the parent
- * can write to the child->flags), because we're guaranteed the
- * child is not running and in turn not changing child->flags
- * at the same time the parent does it.
- */
-#define clear_stopped_child_used_math(child) do { (child)->flags &= ~PF_USED_MATH; } while (0)
-#define set_stopped_child_used_math(child) do { (child)->flags |= PF_USED_MATH; } while (0)
-#define clear_used_math() clear_stopped_child_used_math(current)
-#define set_used_math() set_stopped_child_used_math(current)
-#define conditional_stopped_child_used_math(condition, child) \
- do { (child)->flags &= ~PF_USED_MATH, (child)->flags |= (condition) ? PF_USED_MATH : 0; } while (0)
-#define conditional_used_math(condition) \
- conditional_stopped_child_used_math(condition, current)
-#define copy_to_stopped_child_used_math(child) \
- do { (child)->flags &= ~PF_USED_MATH, (child)->flags |= current->flags & PF_USED_MATH; } while (0)
-/* NOTE: this will return 0 or PF_USED_MATH, it will never return 1 */
-#define tsk_used_math(p) ((p)->flags & PF_USED_MATH)
-#define used_math() tsk_used_math(current)
-
-#ifdef CONFIG_SMP
-extern int set_cpus_allowed_ptr(struct task_struct *p,
- const cpumask_t *new_mask);
-#else
-static inline int set_cpus_allowed_ptr(struct task_struct *p,
- const cpumask_t *new_mask)
-{
- if (!cpu_isset(0, *new_mask))
- return -EINVAL;
- return 0;
-}
-#endif
-static inline int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask)
-{
- return set_cpus_allowed_ptr(p, &new_mask);
-}
-
-extern unsigned long long sched_clock(void);
-
-extern void sched_clock_init(void);
-extern u64 sched_clock_cpu(int cpu);
-
-#ifndef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
-static inline void sched_clock_tick(void)
-{
-}
-
-static inline void sched_clock_idle_sleep_event(void)
-{
-}
-
-static inline void sched_clock_idle_wakeup_event(u64 delta_ns)
-{
-}
-#else
-extern void sched_clock_tick(void);
-extern void sched_clock_idle_sleep_event(void);
-extern void sched_clock_idle_wakeup_event(u64 delta_ns);
-#endif
-
-/*
- * For kernel-internal use: high-speed (but slightly incorrect) per-cpu
- * clock constructed from sched_clock():
- */
-extern unsigned long long cpu_clock(int cpu);
-
-extern unsigned long long
-task_sched_runtime(struct task_struct *task);
-
-/* sched_exec is called by processes performing an exec */
-#ifdef CONFIG_SMP
-extern void sched_exec(void);
-#else
-#define sched_exec() {}
-#endif
-
-extern void sched_clock_idle_sleep_event(void);
-extern void sched_clock_idle_wakeup_event(u64 delta_ns);
-
-#ifdef CONFIG_HOTPLUG_CPU
-extern void idle_task_exit(void);
-#else
-static inline void idle_task_exit(void) {}
-#endif
-
-extern void sched_idle_next(void);
-
-#if defined(CONFIG_NO_HZ) && defined(CONFIG_SMP)
-extern void wake_up_idle_cpu(int cpu);
-#else
-static inline void wake_up_idle_cpu(int cpu) { }
-#endif
-
-#ifdef CONFIG_SCHED_DEBUG
-extern unsigned int sysctl_sched_latency;
-extern unsigned int sysctl_sched_min_granularity;
-extern unsigned int sysctl_sched_wakeup_granularity;
-extern unsigned int sysctl_sched_child_runs_first;
-extern unsigned int sysctl_sched_features;
-extern unsigned int sysctl_sched_migration_cost;
-extern unsigned int sysctl_sched_nr_migrate;
-extern unsigned int sysctl_sched_shares_ratelimit;
-
-int sched_nr_latency_handler(struct ctl_table *table, int write,
- struct file *file, void __user *buffer, size_t *length,
- loff_t *ppos);
-#endif
-extern unsigned int sysctl_sched_rt_period;
-extern int sysctl_sched_rt_runtime;
-
-int sched_rt_handler(struct ctl_table *table, int write,
- struct file *filp, void __user *buffer, size_t *lenp,
- loff_t *ppos);
-
-extern unsigned int sysctl_sched_compat_yield;
-
-#ifdef CONFIG_RT_MUTEXES
-extern int rt_mutex_getprio(struct task_struct *p);
-extern void rt_mutex_setprio(struct task_struct *p, int prio);
-extern void rt_mutex_adjust_pi(struct task_struct *p);
-#else
-static inline int rt_mutex_getprio(struct task_struct *p)
-{
- return p->normal_prio;
-}
-# define rt_mutex_adjust_pi(p) do { } while (0)
-#endif
-
-extern void set_user_nice(struct task_struct *p, long nice);
-extern int task_prio(const struct task_struct *p);
-extern int task_nice(const struct task_struct *p);
-extern int can_nice(const struct task_struct *p, const int nice);
-extern int task_curr(const struct task_struct *p);
-extern int idle_cpu(int cpu);
-extern int sched_setscheduler(struct task_struct *, int, struct sched_param *);
-extern int sched_setscheduler_nocheck(struct task_struct *, int,
- struct sched_param *);
-extern struct task_struct *idle_task(int cpu);
-extern struct task_struct *curr_task(int cpu);
-extern void set_curr_task(int cpu, struct task_struct *p);
-
-void yield(void);
-
-/*
- * The default (Linux) execution domain.
- */
-extern struct exec_domain default_exec_domain;
-
-union thread_union {
- struct thread_info thread_info;
- unsigned long stack[THREAD_SIZE/sizeof(long)];
-};
-
-#ifndef __HAVE_ARCH_KSTACK_END
-static inline int kstack_end(void *addr)
-{
- /* Reliable end of stack detection:
- * Some APM bios versions misalign the stack
- */
- return !(((unsigned long)addr+sizeof(void*)-1) & (THREAD_SIZE-sizeof(void*)));
-}
-#endif
-
-extern union thread_union init_thread_union;
-extern struct task_struct init_task;
-
-extern struct mm_struct init_mm;
-
-extern struct pid_namespace init_pid_ns;
-
-/*
- * find a task by one of its numerical ids
- *
- * find_task_by_pid_type_ns():
- * it is the most generic call - it finds a task by all id,
- * type and namespace specified
- * find_task_by_pid_ns():
- * finds a task by its pid in the specified namespace
- * find_task_by_vpid():
- * finds a task by its virtual pid
- *
- * see also find_vpid() etc in include/linux/pid.h
- */
-
-extern struct task_struct *find_task_by_pid_type_ns(int type, int pid,
- struct pid_namespace *ns);
-
-extern struct task_struct *find_task_by_vpid(pid_t nr);
-extern struct task_struct *find_task_by_pid_ns(pid_t nr,
- struct pid_namespace *ns);
-
-extern void __set_special_pids(struct pid *pid);
-
-/* per-UID process charging. */
-extern struct user_struct * alloc_uid(struct user_namespace *, uid_t);
-static inline struct user_struct *get_uid(struct user_struct *u)
-{
- atomic_inc(&u->__count);
- return u;
-}
-extern void free_uid(struct user_struct *);
-extern void switch_uid(struct user_struct *);
-extern void release_uids(struct user_namespace *ns);
-
-#include <asm/current.h>
-
-extern void do_timer(unsigned long ticks);
-
-extern int wake_up_state(struct task_struct *tsk, unsigned int state);
-extern int wake_up_process(struct task_struct *tsk);
-extern void wake_up_new_task(struct task_struct *tsk,
- unsigned long clone_flags);
-#ifdef CONFIG_SMP
- extern void kick_process(struct task_struct *tsk);
-#else
- static inline void kick_process(struct task_struct *tsk) { }
-#endif
-extern void sched_fork(struct task_struct *p, int clone_flags);
-extern void sched_dead(struct task_struct *p);
-
-extern int in_group_p(gid_t);
-extern int in_egroup_p(gid_t);
-
-extern void proc_caches_init(void);
-extern void flush_signals(struct task_struct *);
-extern void ignore_signals(struct task_struct *);
-extern void flush_signal_handlers(struct task_struct *, int force_default);
-extern int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info);
-
-static inline int dequeue_signal_lock(struct task_struct *tsk, sigset_t *mask, siginfo_t *info)
-{
- unsigned long flags;
- int ret;
-
- spin_lock_irqsave(&tsk->sighand->siglock, flags);
- ret = dequeue_signal(tsk, mask, info);
- spin_unlock_irqrestore(&tsk->sighand->siglock, flags);
-
- return ret;
-}
-
-extern void block_all_signals(int (*notifier)(void *priv), void *priv,
- sigset_t *mask);
-extern void unblock_all_signals(void);
-extern void release_task(struct task_struct * p);
-extern int send_sig_info(int, struct siginfo *, struct task_struct *);
-extern int force_sigsegv(int, struct task_struct *);
-extern int force_sig_info(int, struct siginfo *, struct task_struct *);
-extern int __kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp);
-extern int kill_pid_info(int sig, struct siginfo *info, struct pid *pid);
-extern int kill_pid_info_as_uid(int, struct siginfo *, struct pid *, uid_t, uid_t, u32);
-extern int kill_pgrp(struct pid *pid, int sig, int priv);
-extern int kill_pid(struct pid *pid, int sig, int priv);
-extern int kill_proc_info(int, struct siginfo *, pid_t);
-extern int do_notify_parent(struct task_struct *, int);
-extern void force_sig(int, struct task_struct *);
-extern void force_sig_specific(int, struct task_struct *);
-extern int send_sig(int, struct task_struct *, int);
-extern void zap_other_threads(struct task_struct *p);
-extern struct sigqueue *sigqueue_alloc(void);
-extern void sigqueue_free(struct sigqueue *);
-extern int send_sigqueue(struct sigqueue *, struct task_struct *, int group);
-extern int do_sigaction(int, struct k_sigaction *, struct k_sigaction *);
-extern int do_sigaltstack(const stack_t __user *, stack_t __user *, unsigned long);
-
-static inline int kill_cad_pid(int sig, int priv)
-{
- return kill_pid(cad_pid, sig, priv);
-}
-
-/* These can be the second arg to send_sig_info/send_group_sig_info. */
-#define SEND_SIG_NOINFO ((struct siginfo *) 0)
-#define SEND_SIG_PRIV ((struct siginfo *) 1)
-#define SEND_SIG_FORCED ((struct siginfo *) 2)
-
-static inline int is_si_special(const struct siginfo *info)
-{
- return info <= SEND_SIG_FORCED;
-}
-
-/* True if we are on the alternate signal stack. */
-
-static inline int on_sig_stack(unsigned long sp)
-{
- return (sp - current->sas_ss_sp < current->sas_ss_size);
-}
-
-static inline int sas_ss_flags(unsigned long sp)
-{
- return (current->sas_ss_size == 0 ? SS_DISABLE
- : on_sig_stack(sp) ? SS_ONSTACK : 0);
-}
-
-/*
- * Routines for handling mm_structs
- */
-extern struct mm_struct * mm_alloc(void);
-
-/* mmdrop drops the mm and the page tables */
-extern void __mmdrop(struct mm_struct *);
-static inline void mmdrop(struct mm_struct * mm)
-{
- if (unlikely(atomic_dec_and_test(&mm->mm_count)))
- __mmdrop(mm);
-}
-
-/* mmput gets rid of the mappings and all user-space */
-extern void mmput(struct mm_struct *);
-/* Grab a reference to a task's mm, if it is not already going away */
-extern struct mm_struct *get_task_mm(struct task_struct *task);
-/* Remove the current tasks stale references to the old mm_struct */
-extern void mm_release(struct task_struct *, struct mm_struct *);
-/* Allocate a new mm structure and copy contents from tsk->mm */
-extern struct mm_struct *dup_mm(struct task_struct *tsk);
-
-extern int copy_thread(int, unsigned long, unsigned long, unsigned long, struct task_struct *, struct pt_regs *);
-extern void flush_thread(void);
-extern void exit_thread(void);
-
-extern void exit_files(struct task_struct *);
-extern void __cleanup_signal(struct signal_struct *);
-extern void __cleanup_sighand(struct sighand_struct *);
-
-extern void exit_itimers(struct signal_struct *);
-extern void flush_itimer_signals(void);
-
-extern NORET_TYPE void do_group_exit(int);
-
-extern void daemonize(const char *, ...);
-extern int allow_signal(int);
-extern int disallow_signal(int);
-
-extern int do_execve(char *, char __user * __user *, char __user * __user *, struct pt_regs *);
-extern long do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned long, int __user *, int __user *);
-struct task_struct *fork_idle(int);
-
-extern void set_task_comm(struct task_struct *tsk, char *from);
-extern char *get_task_comm(char *to, struct task_struct *tsk);
-
-#ifdef CONFIG_SMP
-extern unsigned long wait_task_inactive(struct task_struct *, long match_state);
-#else
-static inline unsigned long wait_task_inactive(struct task_struct *p,
- long match_state)
-{
- return 1;
-}
-#endif
-
-#define next_task(p) list_entry(rcu_dereference((p)->tasks.next), struct task_struct, tasks)
-
-#define for_each_process(p) \
- for (p = &init_task ; (p = next_task(p)) != &init_task ; )
-
-/*
- * Careful: do_each_thread/while_each_thread is a double loop so
- * 'break' will not work as expected - use goto instead.
- */
-#define do_each_thread(g, t) \
- for (g = t = &init_task ; (g = t = next_task(g)) != &init_task ; ) do
-
-#define while_each_thread(g, t) \
- while ((t = next_thread(t)) != g)
-
-/* de_thread depends on thread_group_leader not being a pid based check */
-#define thread_group_leader(p) (p == p->group_leader)
-
-/* Do to the insanities of de_thread it is possible for a process
- * to have the pid of the thread group leader without actually being
- * the thread group leader. For iteration through the pids in proc
- * all we care about is that we have a task with the appropriate
- * pid, we don't actually care if we have the right task.
- */
-static inline int has_group_leader_pid(struct task_struct *p)
-{
- return p->pid == p->tgid;
-}
-
-static inline
-int same_thread_group(struct task_struct *p1, struct task_struct *p2)
-{
- return p1->tgid == p2->tgid;
-}
-
-static inline struct task_struct *next_thread(const struct task_struct *p)
-{
- return list_entry(rcu_dereference(p->thread_group.next),
- struct task_struct, thread_group);
-}
-
-static inline int thread_group_empty(struct task_struct *p)
-{
- return list_empty(&p->thread_group);
-}
-
-#define delay_group_leader(p) \
- (thread_group_leader(p) && !thread_group_empty(p))
-
-/*
- * Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring
- * subscriptions and synchronises with wait4(). Also used in procfs. Also
- * pins the final release of task.io_context. Also protects ->cpuset and
- * ->cgroup.subsys[].
- *
- * Nests both inside and outside of read_lock(&tasklist_lock).
- * It must not be nested with write_lock_irq(&tasklist_lock),
- * neither inside nor outside.
- */
-static inline void task_lock(struct task_struct *p)
-{
- spin_lock(&p->alloc_lock);
-}
-
-static inline void task_unlock(struct task_struct *p)
-{
- spin_unlock(&p->alloc_lock);
-}
-
-extern struct sighand_struct *lock_task_sighand(struct task_struct *tsk,
- unsigned long *flags);
-
-static inline void unlock_task_sighand(struct task_struct *tsk,
- unsigned long *flags)
-{
- spin_unlock_irqrestore(&tsk->sighand->siglock, *flags);
-}
-
-#ifndef __HAVE_THREAD_FUNCTIONS
-
-#define task_thread_info(task) ((struct thread_info *)(task)->stack)
-#define task_stack_page(task) ((task)->stack)
-
-static inline void setup_thread_stack(struct task_struct *p, struct task_struct *org)
-{
- *task_thread_info(p) = *task_thread_info(org);
- task_thread_info(p)->task = p;
-}
-
-static inline unsigned long *end_of_stack(struct task_struct *p)
-{
- return (unsigned long *)(task_thread_info(p) + 1);
-}
-
-#endif
-
-static inline int object_is_on_stack(void *obj)
-{
- void *stack = task_stack_page(current);
-
- return (obj >= stack) && (obj < (stack + THREAD_SIZE));
-}
-
-extern void thread_info_cache_init(void);
-
-/* set thread flags in other task's structures
- * - see asm/thread_info.h for TIF_xxxx flags available
- */
-static inline void set_tsk_thread_flag(struct task_struct *tsk, int flag)
-{
- set_ti_thread_flag(task_thread_info(tsk), flag);
-}
-
-static inline void clear_tsk_thread_flag(struct task_struct *tsk, int flag)
-{
- clear_ti_thread_flag(task_thread_info(tsk), flag);
-}
-
-static inline int test_and_set_tsk_thread_flag(struct task_struct *tsk, int flag)
-{
- return test_and_set_ti_thread_flag(task_thread_info(tsk), flag);
-}
-
-static inline int test_and_clear_tsk_thread_flag(struct task_struct *tsk, int flag)
-{
- return test_and_clear_ti_thread_flag(task_thread_info(tsk), flag);
-}
-
-static inline int test_tsk_thread_flag(struct task_struct *tsk, int flag)
-{
- return test_ti_thread_flag(task_thread_info(tsk), flag);
-}
-
-static inline void set_tsk_need_resched(struct task_struct *tsk)
-{
- set_tsk_thread_flag(tsk,TIF_NEED_RESCHED);
-}
-
-static inline void clear_tsk_need_resched(struct task_struct *tsk)
-{
- clear_tsk_thread_flag(tsk,TIF_NEED_RESCHED);
-}
-
-static inline int test_tsk_need_resched(struct task_struct *tsk)
-{
- return unlikely(test_tsk_thread_flag(tsk,TIF_NEED_RESCHED));
-}
-
-static inline int signal_pending(struct task_struct *p)
-{
- return unlikely(test_tsk_thread_flag(p,TIF_SIGPENDING));
-}
-
-extern int __fatal_signal_pending(struct task_struct *p);
-
-static inline int fatal_signal_pending(struct task_struct *p)
-{
- return signal_pending(p) && __fatal_signal_pending(p);
-}
-
-static inline int signal_pending_state(long state, struct task_struct *p)
-{
- if (!(state & (TASK_INTERRUPTIBLE | TASK_WAKEKILL)))
- return 0;
- if (!signal_pending(p))
- return 0;
-
- return (state & TASK_INTERRUPTIBLE) || __fatal_signal_pending(p);
-}
-
-static inline int need_resched(void)
-{
- return unlikely(test_thread_flag(TIF_NEED_RESCHED));
-}
-
-/*
- * cond_resched() and cond_resched_lock(): latency reduction via
- * explicit rescheduling in places that are safe. The return
- * value indicates whether a reschedule was done in fact.
- * cond_resched_lock() will drop the spinlock before scheduling,
- * cond_resched_softirq() will enable bhs before scheduling.
- */
-extern int _cond_resched(void);
-#ifdef CONFIG_PREEMPT_BKL
-static inline int cond_resched(void)
-{
- return 0;
-}
-#else
-static inline int cond_resched(void)
-{
- return _cond_resched();
-}
-#endif
-extern int cond_resched_lock(spinlock_t * lock);
-extern int cond_resched_softirq(void);
-static inline int cond_resched_bkl(void)
-{
- return _cond_resched();
-}
-
-/*
- * Does a critical section need to be broken due to another
- * task waiting?: (technically does not depend on CONFIG_PREEMPT,
- * but a general need for low latency)
- */
-static inline int spin_needbreak(spinlock_t *lock)
-{
-#ifdef CONFIG_PREEMPT
- return spin_is_contended(lock);
-#else
- return 0;
-#endif
-}
-
-/*
- * Reevaluate whether the task has signals pending delivery.
- * Wake the task if so.
- * This is required every time the blocked sigset_t changes.
- * callers must hold sighand->siglock.
- */
-extern void recalc_sigpending_and_wake(struct task_struct *t);
-extern void recalc_sigpending(void);
-
-extern void signal_wake_up(struct task_struct *t, int resume_stopped);
-
-/*
- * Wrappers for p->thread_info->cpu access. No-op on UP.
- */
-#ifdef CONFIG_SMP
-
-static inline unsigned int task_cpu(const struct task_struct *p)
-{
- return task_thread_info(p)->cpu;
-}
-
-extern void set_task_cpu(struct task_struct *p, unsigned int cpu);
-
-#else
-
-static inline unsigned int task_cpu(const struct task_struct *p)
-{
- return 0;
-}
-
-static inline void set_task_cpu(struct task_struct *p, unsigned int cpu)
-{
-}
-
-#endif /* CONFIG_SMP */
-
-extern void arch_pick_mmap_layout(struct mm_struct *mm);
-
-#ifdef CONFIG_TRACING
-extern void
-__trace_special(void *__tr, void *__data,
- unsigned long arg1, unsigned long arg2, unsigned long arg3);
-#else
-static inline void
-__trace_special(void *__tr, void *__data,
- unsigned long arg1, unsigned long arg2, unsigned long arg3)
-{
-}
-#endif
-
-extern long sched_setaffinity(pid_t pid, const cpumask_t *new_mask);
-extern long sched_getaffinity(pid_t pid, cpumask_t *mask);
-
-extern int sched_mc_power_savings, sched_smt_power_savings;
-
-extern void normalize_rt_tasks(void);
-
-#ifdef CONFIG_GROUP_SCHED
-
-extern struct task_group init_task_group;
-#ifdef CONFIG_USER_SCHED
-extern struct task_group root_task_group;
-#endif
-
-extern struct task_group *sched_create_group(struct task_group *parent);
-extern void sched_destroy_group(struct task_group *tg);
-extern void sched_move_task(struct task_struct *tsk);
-#ifdef CONFIG_FAIR_GROUP_SCHED
-extern int sched_group_set_shares(struct task_group *tg, unsigned long shares);
-extern unsigned long sched_group_shares(struct task_group *tg);
-#endif
-#ifdef CONFIG_RT_GROUP_SCHED
-extern int sched_group_set_rt_runtime(struct task_group *tg,
- long rt_runtime_us);
-extern long sched_group_rt_runtime(struct task_group *tg);
-extern int sched_group_set_rt_period(struct task_group *tg,
- long rt_period_us);
-extern long sched_group_rt_period(struct task_group *tg);
-#endif
-#endif
-
-#ifdef CONFIG_TASK_XACCT
-static inline void add_rchar(struct task_struct *tsk, ssize_t amt)
-{
- tsk->ioac.rchar += amt;
-}
-
-static inline void add_wchar(struct task_struct *tsk, ssize_t amt)
-{
- tsk->ioac.wchar += amt;
-}
-
-static inline void inc_syscr(struct task_struct *tsk)
-{
- tsk->ioac.syscr++;
-}
-
-static inline void inc_syscw(struct task_struct *tsk)
-{
- tsk->ioac.syscw++;
-}
-#else
-static inline void add_rchar(struct task_struct *tsk, ssize_t amt)
-{
-}
-
-static inline void add_wchar(struct task_struct *tsk, ssize_t amt)
-{
-}
-
-static inline void inc_syscr(struct task_struct *tsk)
-{
-}
-
-static inline void inc_syscw(struct task_struct *tsk)
-{
-}
-#endif
-
-#ifndef TASK_SIZE_OF
-#define TASK_SIZE_OF(tsk) TASK_SIZE
-#endif
-
-#ifdef CONFIG_MM_OWNER
-extern void mm_update_next_owner(struct mm_struct *mm);
-extern void mm_init_owner(struct mm_struct *mm, struct task_struct *p);
-#else
-static inline void mm_update_next_owner(struct mm_struct *mm)
-{
-}
-
-static inline void mm_init_owner(struct mm_struct *mm, struct task_struct *p)
-{
-}
-#endif /* CONFIG_MM_OWNER */
-
-#define TASK_STATE_TO_CHAR_STR "RSDTtZX"
-
-#endif /* __KERNEL__ */
+#define SCHED_FLAG_RESET_ON_FORK 0x01
-#endif
+#endif /* _LINUX_SCHED_H */
projects / l4.git / blobdiff