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-rw-r--r--pfinet/linux-src/include/linux/sched.h813
1 files changed, 0 insertions, 813 deletions
diff --git a/pfinet/linux-src/include/linux/sched.h b/pfinet/linux-src/include/linux/sched.h
deleted file mode 100644
index c0e54d86..00000000
--- a/pfinet/linux-src/include/linux/sched.h
+++ /dev/null
@@ -1,813 +0,0 @@
-#ifndef _LINUX_SCHED_H
-#define _LINUX_SCHED_H
-
-#include <asm/param.h> /* for HZ */
-
-extern unsigned long global_event;
-
-#include <linux/binfmts.h>
-#include <linux/personality.h>
-#include <linux/tasks.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/times.h>
-#include <linux/timex.h>
-
-#include <asm/system.h>
-#include <asm/semaphore.h>
-#include <asm/page.h>
-
-#include <linux/smp.h>
-#include <linux/tty.h>
-#include <linux/sem.h>
-#include <linux/signal.h>
-#include <linux/securebits.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 shared */
-#define CLONE_PID 0x00001000 /* set if pid 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 */
-
-/*
- * 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) /* 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;
-
-#define CT_TO_SECS(x) ((x) / HZ)
-#define CT_TO_USECS(x) (((x) % HZ) * 1000000/HZ)
-
-extern int nr_running, nr_tasks;
-extern int last_pid;
-
-#include <linux/fs.h>
-#include <linux/time.h>
-#include <linux/param.h>
-#include <linux/resource.h>
-#include <linux/timer.h>
-
-#include <asm/processor.h>
-
-#define TASK_RUNNING 0
-#define TASK_INTERRUPTIBLE 1
-#define TASK_UNINTERRUPTIBLE 2
-#define TASK_ZOMBIE 4
-#define TASK_STOPPED 8
-#define TASK_SWAPPING 16
-
-/*
- * Scheduling policies
- */
-#define SCHED_OTHER 0
-#define SCHED_FIFO 1
-#define SCHED_RR 2
-
-/*
- * This is an additional bit set when we want to
- * yield the CPU for one re-schedule..
- */
-#define SCHED_YIELD 0x10
-
-struct sched_param {
- int sched_priority;
-};
-
-#ifdef __KERNEL__
-
-#include <asm/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 runqueue_lock;
-
-extern void sched_init(void);
-extern void init_idle(void);
-extern void show_state(void);
-extern void trap_init(void);
-
-#define MAX_SCHEDULE_TIMEOUT LONG_MAX
-extern signed long FASTCALL(schedule_timeout(signed long timeout));
-asmlinkage void schedule(void);
-
-/*
- * The default fd array needs to be at least BITS_PER_LONG,
- * as this is the granularity returned by copy_fdset().
- */
-#define NR_OPEN_DEFAULT BITS_PER_LONG
-
-/*
- * Open file table structure
- */
-struct files_struct {
- atomic_t count;
- int max_fds;
- int max_fdset;
- int next_fd;
- struct file ** fd; /* current fd array */
- fd_set *close_on_exec;
- fd_set *open_fds;
- fd_set close_on_exec_init;
- fd_set open_fds_init;
- struct file * fd_array[NR_OPEN_DEFAULT];
-};
-
-#define INIT_FILES { \
- ATOMIC_INIT(1), \
- NR_OPEN_DEFAULT, \
- __FD_SETSIZE, \
- 0, \
- &init_files.fd_array[0], \
- &init_files.close_on_exec_init, \
- &init_files.open_fds_init, \
- { { 0, } }, \
- { { 0, } }, \
- { NULL, } \
-}
-
-struct fs_struct {
- atomic_t count;
- int umask;
- struct dentry * root, * pwd;
-};
-
-#define INIT_FS { \
- ATOMIC_INIT(1), \
- 0022, \
- NULL, NULL \
-}
-
-/* Maximum number of active map areas.. This is a random (large) number */
-#define MAX_MAP_COUNT (65536)
-
-/* Number of map areas at which the AVL tree is activated. This is arbitrary. */
-#define AVL_MIN_MAP_COUNT 32
-
-struct mm_struct {
- struct vm_area_struct *mmap; /* list of VMAs */
- struct vm_area_struct *mmap_avl; /* tree of VMAs */
- struct vm_area_struct *mmap_cache; /* last find_vma result */
- pgd_t * pgd;
- atomic_t count;
- int map_count; /* number of VMAs */
- struct semaphore mmap_sem;
- unsigned long context;
- unsigned long start_code, end_code, start_data, end_data;
- unsigned long start_brk, brk, start_stack;
- unsigned long arg_start, arg_end, env_start, env_end;
- unsigned long rss, total_vm, locked_vm;
- unsigned long def_flags;
- unsigned long cpu_vm_mask;
- unsigned long swap_cnt; /* number of pages to swap on next pass */
- unsigned long swap_address;
- /*
- * This is an architecture-specific pointer: the portable
- * part of Linux does not know about any segments.
- */
- void * segments;
-};
-
-#define INIT_MM { \
- &init_mmap, NULL, NULL, \
- swapper_pg_dir, \
- ATOMIC_INIT(1), 1, \
- MUTEX, \
- 0, \
- 0, 0, 0, 0, \
- 0, 0, 0, \
- 0, 0, 0, 0, \
- 0, 0, 0, \
- 0, 0, 0, 0, NULL }
-
-struct signal_struct {
- atomic_t count;
- struct k_sigaction action[_NSIG];
- spinlock_t siglock;
-};
-
-
-#define INIT_SIGNALS { \
- ATOMIC_INIT(1), \
- { {{0,}}, }, \
- SPIN_LOCK_UNLOCKED }
-
-/*
- * Some day this will be a full-fledged user tracking system..
- * Right now it is only used to track how many processes a
- * user has, but it has the potential to track memory usage etc.
- */
-struct user_struct;
-
-struct task_struct {
-/* these are hardcoded - don't touch */
- volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
- unsigned long flags; /* per process flags, defined below */
- int sigpending;
- mm_segment_t addr_limit; /* thread address space:
- 0-0xBFFFFFFF for user-thead
- 0-0xFFFFFFFF for kernel-thread
- */
- struct exec_domain *exec_domain;
- long need_resched;
-
-/* various fields */
- long counter;
- long priority;
- cycles_t avg_slice;
-/* SMP and runqueue state */
- int has_cpu;
- int processor;
- int last_processor;
- int lock_depth; /* Lock depth. We can context switch in and out of holding a syscall kernel lock... */
- struct task_struct *next_task, *prev_task;
- struct task_struct *next_run, *prev_run;
-
-/* task state */
- struct linux_binfmt *binfmt;
- int exit_code, exit_signal;
- int pdeath_signal; /* The signal sent when the parent dies */
- /* ??? */
- unsigned long personality;
- int dumpable:1;
- int did_exec:1;
- pid_t pid;
- pid_t pgrp;
- pid_t tty_old_pgrp;
- pid_t session;
- /* boolean value for session group leader */
- int leader;
- /*
- * pointers to (original) parent process, youngest child, younger sibling,
- * older sibling, respectively. (p->father can be replaced with
- * p->p_pptr->pid)
- */
- struct task_struct *p_opptr, *p_pptr, *p_cptr, *p_ysptr, *p_osptr;
-
- /* PID hash table linkage. */
- struct task_struct *pidhash_next;
- struct task_struct **pidhash_pprev;
-
- /* Pointer to task[] array linkage. */
- struct task_struct **tarray_ptr;
-
- struct wait_queue *wait_chldexit; /* for wait4() */
- struct semaphore *vfork_sem; /* for vfork() */
- unsigned long policy, rt_priority;
- unsigned long it_real_value, it_prof_value, it_virt_value;
- unsigned long it_real_incr, it_prof_incr, it_virt_incr;
- struct timer_list real_timer;
- struct tms times;
- unsigned long start_time;
- long per_cpu_utime[NR_CPUS], per_cpu_stime[NR_CPUS];
-/* mm fault and swap info: this can arguably be seen as either mm-specific or thread-specific */
- unsigned long min_flt, maj_flt, nswap, cmin_flt, cmaj_flt, cnswap;
- int swappable:1;
-/* process credentials */
- uid_t uid,euid,suid,fsuid;
- gid_t gid,egid,sgid,fsgid;
- int ngroups;
- gid_t groups[NGROUPS];
- kernel_cap_t cap_effective, cap_inheritable, cap_permitted;
- struct user_struct *user;
-/* limits */
- struct rlimit rlim[RLIM_NLIMITS];
- unsigned short used_math;
- char comm[16];
-/* file system info */
- int link_count;
- struct tty_struct *tty; /* NULL if no tty */
-/* ipc stuff */
- struct sem_undo *semundo;
- struct sem_queue *semsleeping;
-/* tss for this task */
- struct thread_struct tss;
-/* filesystem information */
- struct fs_struct *fs;
-/* open file information */
- struct files_struct *files;
-/* memory management info */
- struct mm_struct *mm;
-
-/* signal handlers */
- spinlock_t sigmask_lock; /* Protects signal and blocked */
- struct signal_struct *sig;
- sigset_t signal, blocked;
- struct signal_queue *sigqueue, **sigqueue_tail;
- unsigned long sas_ss_sp;
- size_t sas_ss_size;
-
-/* Thread group tracking */
- u32 parent_exec_id;
- u32 self_exec_id;
-};
-
-/*
- * 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_PTRACED 0x00000010 /* set if ptrace (0) has been called */
-#define PF_TRACESYS 0x00000020 /* tracing system calls */
-#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_VFORK 0x00001000 /* Wake up parent in mm_release */
-
-#define PF_USEDFPU 0x00100000 /* task used FPU this quantum (SMP) */
-#define PF_DTRACE 0x00200000 /* delayed trace (used on m68k, i386) */
-
-/*
- * Limit the stack by to some sane default: root can always
- * increase this limit if needed.. 8MB seems reasonable.
- */
-#define _STK_LIM (8*1024*1024)
-
-#define DEF_PRIORITY (20*HZ/100) /* 210 ms time slices */
-
-/*
- * INIT_TASK is used to set up the first task table, touch at
- * your own risk!. Base=0, limit=0x1fffff (=2MB)
- */
-#define INIT_TASK \
-/* state etc */ { 0,0,0,KERNEL_DS,&default_exec_domain,0, \
-/* counter */ DEF_PRIORITY,DEF_PRIORITY,0, \
-/* SMP */ 0,0,0,-1, \
-/* schedlink */ &init_task,&init_task, &init_task, &init_task, \
-/* binfmt */ NULL, \
-/* ec,brk... */ 0,0,0,0,0,0, \
-/* pid etc.. */ 0,0,0,0,0, \
-/* proc links*/ &init_task,&init_task,NULL,NULL,NULL, \
-/* pidhash */ NULL, NULL, \
-/* tarray */ &task[0], \
-/* chld wait */ NULL, NULL, \
-/* timeout */ SCHED_OTHER,0,0,0,0,0,0,0, \
-/* timer */ { NULL, NULL, 0, 0, it_real_fn }, \
-/* utime */ {0,0,0,0},0, \
-/* per CPU times */ {0, }, {0, }, \
-/* flt */ 0,0,0,0,0,0, \
-/* swp */ 0, \
-/* process credentials */ \
-/* uid etc */ 0,0,0,0,0,0,0,0, \
-/* suppl grps*/ 0, {0,}, \
-/* caps */ CAP_INIT_EFF_SET,CAP_INIT_INH_SET,CAP_FULL_SET, \
-/* user */ NULL, \
-/* rlimits */ INIT_RLIMITS, \
-/* math */ 0, \
-/* comm */ "swapper", \
-/* fs info */ 0,NULL, \
-/* ipc */ NULL, NULL, \
-/* tss */ INIT_TSS, \
-/* fs */ &init_fs, \
-/* files */ &init_files, \
-/* mm */ &init_mm, \
-/* signals */ SPIN_LOCK_UNLOCKED, &init_signals, {{0}}, {{0}}, NULL, &init_task.sigqueue, 0, 0, \
-/* exec cts */ 0,0, \
-}
-
-union task_union {
- struct task_struct task;
- unsigned long stack[2048];
-};
-
-extern union task_union init_task_union;
-
-extern struct mm_struct init_mm;
-extern struct task_struct *task[NR_TASKS];
-
-extern struct task_struct **tarray_freelist;
-extern spinlock_t taskslot_lock;
-
-static __inline__ void add_free_taskslot(struct task_struct **t)
-{
- spin_lock(&taskslot_lock);
- *t = (struct task_struct *) tarray_freelist;
- tarray_freelist = t;
- spin_unlock(&taskslot_lock);
-}
-
-static __inline__ struct task_struct **get_free_taskslot(void)
-{
- struct task_struct **tslot;
-
- spin_lock(&taskslot_lock);
- if((tslot = tarray_freelist) != NULL)
- tarray_freelist = (struct task_struct **) *tslot;
- spin_unlock(&taskslot_lock);
-
- return tslot;
-}
-
-/* PID hashing. */
-#define PIDHASH_SZ (NR_TASKS >> 2)
-extern struct task_struct *pidhash[PIDHASH_SZ];
-
-#define pid_hashfn(x) ((((x) >> 8) ^ (x)) & (PIDHASH_SZ - 1))
-
-static __inline__ void hash_pid(struct task_struct *p)
-{
- struct task_struct **htable = &pidhash[pid_hashfn(p->pid)];
-
- if((p->pidhash_next = *htable) != NULL)
- (*htable)->pidhash_pprev = &p->pidhash_next;
- *htable = p;
- p->pidhash_pprev = htable;
-}
-
-static __inline__ void unhash_pid(struct task_struct *p)
-{
- if(p->pidhash_next)
- p->pidhash_next->pidhash_pprev = p->pidhash_pprev;
- *p->pidhash_pprev = p->pidhash_next;
-}
-
-static __inline__ struct task_struct *find_task_by_pid(int pid)
-{
- struct task_struct *p, **htable = &pidhash[pid_hashfn(pid)];
-
- for(p = *htable; p && p->pid != pid; p = p->pidhash_next)
- ;
-
- return p;
-}
-
-/* per-UID process charging. */
-extern int alloc_uid(struct task_struct *p);
-void free_uid(struct task_struct *p);
-
-#include <asm/current.h>
-
-extern unsigned long volatile jiffies;
-extern unsigned long itimer_ticks;
-extern unsigned long itimer_next;
-extern struct timeval xtime;
-extern void do_timer(struct pt_regs *);
-
-extern unsigned int * prof_buffer;
-extern unsigned long prof_len;
-extern unsigned long prof_shift;
-
-#define CURRENT_TIME (xtime.tv_sec)
-
-extern void FASTCALL(__wake_up(struct wait_queue ** p, unsigned int mode));
-extern void FASTCALL(sleep_on(struct wait_queue ** p));
-extern long FASTCALL(sleep_on_timeout(struct wait_queue ** p,
- signed long timeout));
-extern void FASTCALL(interruptible_sleep_on(struct wait_queue ** p));
-extern long FASTCALL(interruptible_sleep_on_timeout(struct wait_queue ** p,
- signed long timeout));
-extern void FASTCALL(wake_up_process(struct task_struct * tsk));
-
-#define wake_up(x) __wake_up((x),TASK_UNINTERRUPTIBLE | TASK_INTERRUPTIBLE)
-#define wake_up_interruptible(x) __wake_up((x),TASK_INTERRUPTIBLE)
-
-extern int in_group_p(gid_t grp);
-
-extern void flush_signals(struct task_struct *);
-extern void flush_signal_handlers(struct task_struct *);
-extern int dequeue_signal(sigset_t *block, siginfo_t *);
-extern int send_sig_info(int, struct siginfo *info, struct task_struct *);
-extern int force_sig_info(int, struct siginfo *info, struct task_struct *);
-extern int kill_pg_info(int, struct siginfo *info, pid_t);
-extern int kill_sl_info(int, struct siginfo *info, pid_t);
-extern int kill_proc_info(int, struct siginfo *info, pid_t);
-extern int kill_something_info(int, struct siginfo *info, int);
-extern void notify_parent(struct task_struct * tsk, int);
-extern void force_sig(int sig, struct task_struct * p);
-extern int send_sig(int sig, struct task_struct * p, int priv);
-extern int kill_pg(pid_t, int, int);
-extern int kill_sl(pid_t, int, int);
-extern int kill_proc(pid_t, int, int);
-extern int do_sigaction(int sig, const struct k_sigaction *act,
- struct k_sigaction *oact);
-extern int do_sigaltstack(const stack_t *ss, stack_t *oss, unsigned long sp);
-
-extern inline int signal_pending(struct task_struct *p)
-{
- return (p->sigpending != 0);
-}
-
-/* Reevaluate whether the task has signals pending delivery.
- This is required every time the blocked sigset_t changes.
- All callers should have t->sigmask_lock. */
-
-static inline void recalc_sigpending(struct task_struct *t)
-{
- unsigned long ready;
- long i;
-
- switch (_NSIG_WORDS) {
- default:
- for (i = _NSIG_WORDS, ready = 0; --i >= 0 ;)
- ready |= t->signal.sig[i] &~ t->blocked.sig[i];
- break;
-
- case 4: ready = t->signal.sig[3] &~ t->blocked.sig[3];
- ready |= t->signal.sig[2] &~ t->blocked.sig[2];
- ready |= t->signal.sig[1] &~ t->blocked.sig[1];
- ready |= t->signal.sig[0] &~ t->blocked.sig[0];
- break;
-
- case 2: ready = t->signal.sig[1] &~ t->blocked.sig[1];
- ready |= t->signal.sig[0] &~ t->blocked.sig[0];
- break;
-
- case 1: ready = t->signal.sig[0] &~ t->blocked.sig[0];
- }
-
- t->sigpending = (ready != 0);
-}
-
-/* True if we are on the alternate signal stack. */
-
-static inline int on_sig_stack(unsigned long sp)
-{
- return (sp >= current->sas_ss_sp
- && 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);
-}
-
-extern int request_irq(unsigned int irq,
- void (*handler)(int, void *, struct pt_regs *),
- unsigned long flags,
- const char *device,
- void *dev_id);
-extern void free_irq(unsigned int irq, void *dev_id);
-
-/*
- * This has now become a routine instead of a macro, it sets a flag if
- * it returns true (to do BSD-style accounting where the process is flagged
- * if it uses root privs). The implication of this is that you should do
- * normal permissions checks first, and check suser() last.
- *
- * [Dec 1997 -- Chris Evans]
- * For correctness, the above considerations need to be extended to
- * fsuser(). This is done, along with moving fsuser() checks to be
- * last.
- *
- * These will be removed, but in the mean time, when the SECURE_NOROOT
- * flag is set, uids don't grant privilege.
- */
-extern inline int suser(void)
-{
- if (!issecure(SECURE_NOROOT) && current->euid == 0) {
- current->flags |= PF_SUPERPRIV;
- return 1;
- }
- return 0;
-}
-
-extern inline int fsuser(void)
-{
- if (!issecure(SECURE_NOROOT) && current->fsuid == 0) {
- current->flags |= PF_SUPERPRIV;
- return 1;
- }
- return 0;
-}
-
-/*
- * capable() checks for a particular capability.
- * New privilege checks should use this interface, rather than suser() or
- * fsuser(). See include/linux/capability.h for defined capabilities.
- */
-
-extern inline int capable(int cap)
-{
-#if 1 /* ok now */
- if (cap_raised(current->cap_effective, cap))
-#else
- if (cap_is_fs_cap(cap) ? current->fsuid == 0 : current->euid == 0)
-#endif
- {
- current->flags |= PF_SUPERPRIV;
- return 1;
- }
- return 0;
-}
-
-/*
- * Routines for handling mm_structs
- */
-extern struct mm_struct * mm_alloc(void);
-static inline void mmget(struct mm_struct * mm)
-{
- atomic_inc(&mm->count);
-}
-extern void mmput(struct mm_struct *);
-/* Remove the current tasks stale references to the old mm_struct */
-extern void mm_release(void);
-
-/*
- * Routines for handling the fd arrays
- */
-extern struct file ** alloc_fd_array(int);
-extern int expand_fd_array(struct files_struct *, int nr);
-extern void free_fd_array(struct file **, int);
-
-extern fd_set *alloc_fdset(int);
-extern int expand_fdset(struct files_struct *, int nr);
-extern void free_fdset(fd_set *, int);
-
-/* Expand files. Return <0 on error; 0 nothing done; 1 files expanded,
- * we may have blocked. */
-static inline int expand_files(struct files_struct *files, int nr)
-{
- int err, expand = 0;
-#ifdef FDSET_DEBUG
- printk (KERN_ERR __FUNCTION__ " %d: nr = %d\n", current->pid, nr);
-#endif
-
- if (nr >= files->max_fdset) {
- expand = 1;
- if ((err = expand_fdset(files, nr + 1)))
- goto out;
- }
- if (nr >= files->max_fds) {
- expand = 1;
- if ((err = expand_fd_array(files, nr + 1)))
- goto out;
- }
- err = expand;
- out:
-#ifdef FDSET_DEBUG
- if (err)
- printk (KERN_ERR __FUNCTION__ " %d: return %d\n", current->pid, err);
-#endif
- return err;
-}
-
-extern int copy_thread(int, unsigned long, unsigned long, struct task_struct *, struct pt_regs *);
-extern void flush_thread(void);
-extern void exit_thread(void);
-
-extern void exit_mm(struct task_struct *);
-extern void exit_fs(struct task_struct *);
-extern void exit_files(struct task_struct *);
-extern void exit_sighand(struct task_struct *);
-
-extern int do_execve(char *, char **, char **, struct pt_regs *);
-extern int do_fork(unsigned long, unsigned long, struct pt_regs *);
-
-/*
- * The wait-queues are circular lists, and you have to be *very* sure
- * to keep them correct. Use only these two functions to add/remove
- * entries in the queues.
- */
-extern inline void __add_wait_queue(struct wait_queue ** p, struct wait_queue * wait)
-{
- wait->next = *p ? : WAIT_QUEUE_HEAD(p);
- *p = wait;
-}
-
-extern rwlock_t waitqueue_lock;
-
-extern inline void add_wait_queue(struct wait_queue ** p, struct wait_queue * wait)
-{
- unsigned long flags;
-
- write_lock_irqsave(&waitqueue_lock, flags);
- __add_wait_queue(p, wait);
- write_unlock_irqrestore(&waitqueue_lock, flags);
-}
-
-extern inline void __remove_wait_queue(struct wait_queue ** p, struct wait_queue * wait)
-{
- struct wait_queue * next = wait->next;
- struct wait_queue * head = next;
- struct wait_queue * tmp;
-
- while ((tmp = head->next) != wait) {
- head = tmp;
- }
- head->next = next;
-}
-
-extern inline void remove_wait_queue(struct wait_queue ** p, struct wait_queue * wait)
-{
- unsigned long flags;
-
- write_lock_irqsave(&waitqueue_lock, flags);
- __remove_wait_queue(p, wait);
- write_unlock_irqrestore(&waitqueue_lock, flags);
-}
-
-#define __wait_event(wq, condition) \
-do { \
- struct wait_queue __wait; \
- \
- __wait.task = current; \
- add_wait_queue(&wq, &__wait); \
- for (;;) { \
- current->state = TASK_UNINTERRUPTIBLE; \
- mb(); \
- if (condition) \
- break; \
- schedule(); \
- } \
- current->state = TASK_RUNNING; \
- remove_wait_queue(&wq, &__wait); \
-} while (0)
-
-#define wait_event(wq, condition) \
-do { \
- if (condition) \
- break; \
- __wait_event(wq, condition); \
-} while (0)
-
-#define __wait_event_interruptible(wq, condition, ret) \
-do { \
- struct wait_queue __wait; \
- \
- __wait.task = current; \
- add_wait_queue(&wq, &__wait); \
- for (;;) { \
- current->state = TASK_INTERRUPTIBLE; \
- mb(); \
- if (condition) \
- break; \
- if (!signal_pending(current)) { \
- schedule(); \
- continue; \
- } \
- ret = -ERESTARTSYS; \
- break; \
- } \
- current->state = TASK_RUNNING; \
- remove_wait_queue(&wq, &__wait); \
-} while (0)
-
-#define wait_event_interruptible(wq, condition) \
-({ \
- int __ret = 0; \
- if (!(condition)) \
- __wait_event_interruptible(wq, condition, __ret); \
- __ret; \
-})
-
-#define REMOVE_LINKS(p) do { \
- (p)->next_task->prev_task = (p)->prev_task; \
- (p)->prev_task->next_task = (p)->next_task; \
- if ((p)->p_osptr) \
- (p)->p_osptr->p_ysptr = (p)->p_ysptr; \
- if ((p)->p_ysptr) \
- (p)->p_ysptr->p_osptr = (p)->p_osptr; \
- else \
- (p)->p_pptr->p_cptr = (p)->p_osptr; \
- } while (0)
-
-#define SET_LINKS(p) do { \
- (p)->next_task = &init_task; \
- (p)->prev_task = init_task.prev_task; \
- init_task.prev_task->next_task = (p); \
- init_task.prev_task = (p); \
- (p)->p_ysptr = NULL; \
- if (((p)->p_osptr = (p)->p_pptr->p_cptr) != NULL) \
- (p)->p_osptr->p_ysptr = p; \
- (p)->p_pptr->p_cptr = p; \
- } while (0)
-
-#define for_each_task(p) \
- for (p = &init_task ; (p = p->next_task) != &init_task ; )
-
-#endif /* __KERNEL__ */
-
-#endif
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