#ifndef _LINUX_SCHED_H
#define _LINUX_SCHED_H
+#include <linux/auxvec.h> /* For AT_VECTOR_SIZE */
+
+/*
+ * 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 */
+
+/*
+ * Scheduling policies
+ */
+#define SCHED_NORMAL 0
+#define SCHED_FIFO 1
+#define SCHED_RR 2
+#define SCHED_BATCH 3
+
+#ifdef __KERNEL__
+
+struct sched_param {
+ int sched_priority;
+};
+
#include <asm/param.h> /* for HZ */
-#include <linux/config.h>
#include <linux/capability.h>
#include <linux/threads.h>
#include <linux/kernel.h>
#include <linux/rcupdate.h>
#include <linux/futex.h>
-#include <linux/auxvec.h> /* For AT_VECTOR_SIZE */
+#include <linux/time.h>
+#include <linux/param.h>
+#include <linux/resource.h>
+#include <linux/timer.h>
+#include <linux/hrtimer.h>
-struct exec_domain;
+#include <asm/processor.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 */
+struct exec_domain;
/*
* List of flags we want to share for kernel threads,
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);
-#include <linux/time.h>
-#include <linux/param.h>
-#include <linux/resource.h>
-#include <linux/timer.h>
-#include <linux/hrtimer.h>
-
-#include <asm/processor.h>
/*
* Task state bitmask. NOTE! These bits are also
/* Task command name length */
#define TASK_COMM_LEN 16
-/*
- * Scheduling policies
- */
-#define SCHED_NORMAL 0
-#define SCHED_FIFO 1
-#define SCHED_RR 2
-#define SCHED_BATCH 3
-
-struct sched_param {
- int sched_priority;
-};
-
-#ifdef __KERNEL__
-
#include <linux/spinlock.h>
/*
spinlock_t siglock;
};
+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
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
};
/* Context switch must be unlocked if interrupts are to be enabled */
#define MAX_PRIO (MAX_RT_PRIO + 40)
#define rt_task(p) (unlikely((p)->prio < MAX_RT_PRIO))
+#define batch_task(p) (unlikely((p)->policy == SCHED_BATCH))
/*
* Some day this will be a full-fledged user tracking system..
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
+#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
struct audit_context; /* See audit.c */
struct mempolicy;
+struct pipe_inode_info;
+
+enum sleep_type {
+ SLEEP_NORMAL,
+ SLEEP_NONINTERACTIVE,
+ SLEEP_INTERACTIVE,
+ SLEEP_INTERRUPTED,
+};
struct task_struct {
volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
unsigned long sleep_avg;
unsigned long long timestamp, last_ran;
unsigned long long sched_time; /* sched_clock time spent running */
- int activated;
+ enum sleep_type sleep_type;
unsigned long policy;
cpumask_t cpus_allowed;
struct task_struct *group_leader; /* threadgroup leader */
/* PID/PID hash table linkage. */
- struct pid pids[PIDTYPE_MAX];
+ 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 */
atomic_t fs_excl; /* holding fs exclusive resources */
struct rcu_head rcu;
+
+ /*
+ * cache last used pipe for splice
+ */
+ struct pipe_inode_info *splice_pipe;
};
static inline pid_t process_group(struct task_struct *tsk)
*/
static inline int pid_alive(struct task_struct *p)
{
- return p->pids[PIDTYPE_PID].nr != 0;
+ return p->pids[PIDTYPE_PID].pid != NULL;
}
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_cb(struct rcu_head *rhp);
+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))
- call_rcu(&t->rcu, __put_task_struct_cb);
+ __put_task_struct(t);
}
/*
#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_SYNCWRITE 0x00200000 /* I am doing a sync write */
-#define PF_BORROWED_MM 0x00400000 /* I am a kthread doing use_mm */
-#define PF_RANDOMIZE 0x00800000 /* randomize virtual address space */
-#define PF_SWAPWRITE 0x01000000 /* Allowed to write to swap */
-#define PF_SPREAD_PAGE 0x04000000 /* Spread page cache over cpuset */
-#define PF_SPREAD_SLAB 0x08000000 /* Spread some slab caches over cpuset */
+#define PF_BORROWED_MM 0x00200000 /* I am a kthread doing use_mm */
+#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_MEMPOLICY 0x10000000 /* Non-default NUMA mempolicy */
/*
extern void exit_thread(void);
extern void exit_files(struct task_struct *);
-extern void exit_signal(struct task_struct *);
-extern void __exit_signal(struct task_struct *);
-extern void exit_sighand(struct task_struct *);
-extern void __exit_sighand(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 NORET_TYPE void do_group_exit(int);
#define remove_parent(p) list_del_init(&(p)->sibling)
#define add_parent(p) list_add_tail(&(p)->sibling,&(p)->parent->children)
-#define next_task(p) list_entry((p)->tasks.next, struct task_struct, tasks)
-#define prev_task(p) list_entry((p)->tasks.prev, struct task_struct, tasks)
+#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 ; )
#define while_each_thread(g, t) \
while ((t = next_thread(t)) != g)
-extern task_t * FASTCALL(next_thread(const task_t *p));
+/* de_thread depends on thread_group_leader not being a pid based check */
+#define thread_group_leader(p) (p == p->group_leader)
-#define thread_group_leader(p) (p->pid == p->tgid)
+static inline task_t *next_thread(const task_t *p)
+{
+ return list_entry(rcu_dereference(p->thread_group.next),
+ task_t, thread_group);
+}
static inline int thread_group_empty(task_t *p)
{
- return list_empty(&p->pids[PIDTYPE_TGID].pid_list);
+ return list_empty(&p->thread_group);
}
#define delay_group_leader(p) \
(thread_group_leader(p) && !thread_group_empty(p))
/*
- * Protects ->fs, ->files, ->mm, ->ptrace, ->group_info, ->comm, keyring
+ * 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.
*
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff