#define CLONE_UNTRACED 0x00800000 /* set if the tracing process can't force CLONE_PTRACE on this clone */
#define CLONE_CHILD_SETTID 0x01000000 /* set the TID in the child */
#define CLONE_STOPPED 0x02000000 /* Start in stopped state */
+#define CLONE_NEWUTS 0x04000000 /* New utsname group? */
+#define CLONE_NEWIPC 0x08000000 /* New ipcs */
+#define CLONE_KTHREAD 0x10000000 /* clone a kernel thread */
/*
* Scheduling policies
#include <linux/cpumask.h>
#include <linux/errno.h>
#include <linux/nodemask.h>
-#include <linux/vs_base.h>
#include <asm/system.h>
#include <asm/semaphore.h>
#include <linux/resource.h>
#include <linux/timer.h>
#include <linux/hrtimer.h>
+#include <linux/task_io_accounting.h>
#include <asm/processor.h>
* 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)
+#define CLONE_KERNEL (CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_KTHREAD)
/*
* These are the constant used to fake the fixed-point load-average
extern unsigned long total_forks;
extern int nr_threads;
-extern int last_pid;
DECLARE_PER_CPU(unsigned long, process_counts);
extern int nr_processes(void);
extern unsigned long nr_running(void);
#define TASK_UNINTERRUPTIBLE 2
#define TASK_STOPPED 4
#define TASK_TRACED 8
+#define TASK_ONHOLD 16
/* in tsk->exit_state */
-#define EXIT_ZOMBIE 16
-#define EXIT_DEAD 32
+#define EXIT_ZOMBIE 32
+#define EXIT_DEAD 64
/* in tsk->state again */
-#define TASK_NONINTERACTIVE 64
-#define TASK_ONHOLD 128
+#define TASK_NONINTERACTIVE 128
+#define TASK_DEAD 256
#define __set_task_state(tsk, state_value) \
do { (tsk)->state = (state_value); } while (0)
extern cpumask_t nohz_cpu_mask;
-extern void show_state(void);
+/*
+ * Only dump TASK_* tasks. (-1 for all tasks)
+ */
+extern void show_state_filter(unsigned long state_filter);
+
+static inline void show_state(void)
+{
+ show_state_filter(-1);
+}
+
extern void show_regs(struct pt_regs *);
/*
extern signed long schedule_timeout_uninterruptible(signed long timeout);
asmlinkage void schedule(void);
-struct namespace;
+struct nsproxy;
/* Maximum number of active map areas.. This is a random (large) number */
#define DEFAULT_MAX_MAP_COUNT 65536
unsigned long saved_auxv[AT_VECTOR_SIZE]; /* for /proc/PID/auxv */
- unsigned dumpable:2;
cpumask_t cpu_vm_mask;
/* Architecture-specific MM context */
mm_context_t context;
struct vx_info *mm_vx_info;
- /* Token based thrashing protection. */
- unsigned long swap_token_time;
- char recent_pagein;
+ /* Swap token stuff */
+ /*
+ * Last value of global fault stamp as seen by this process.
+ * In other words, this value gives an indication of how long
+ * it has been since this task got the token.
+ * Look at mm/thrash.c
+ */
+ unsigned int faultstamp;
+ unsigned int token_priority;
+ unsigned int last_interval;
+
+ unsigned char dumpable:2;
/* coredumping support */
int core_waiters;
/* job control IDs */
pid_t pgrp;
pid_t tty_old_pgrp;
- pid_t session;
+
+ union {
+ pid_t session __deprecated;
+ pid_t __session;
+ };
+
/* boolean value for session group leader */
int leader;
struct pacct_struct pacct; /* per-process accounting information */
#endif
#ifdef CONFIG_TASKSTATS
- spinlock_t stats_lock;
struct taskstats *stats;
#endif
};
#define rt_prio(prio) unlikely((prio) < MAX_RT_PRIO)
#define rt_task(p) rt_prio((p)->prio)
#define batch_task(p) (unlikely((p)->policy == SCHED_BATCH))
-#define has_rt_policy(p) \
- unlikely((p)->policy != SCHED_NORMAL && (p)->policy != SCHED_BATCH)
+#define is_rt_policy(p) ((p) != SCHED_NORMAL && (p) != SCHED_BATCH)
+#define has_rt_policy(p) unlikely(is_rt_policy((p)->policy))
/*
* Some day this will be a full-fledged user tracking system..
#endif /* defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT) */
#ifdef CONFIG_SCHEDSTATS
-extern struct file_operations proc_schedstat_operations;
+extern const struct file_operations proc_schedstat_operations;
#endif /* CONFIG_SCHEDSTATS */
#ifdef CONFIG_TASK_DELAY_ACCT
#define SD_WAKE_BALANCE 64 /* Perform balancing at task wakeup */
#define SD_SHARE_CPUPOWER 128 /* Domain members share cpu power */
#define SD_POWERSAVINGS_BALANCE 256 /* Balance for power savings */
+#define SD_SHARE_PKG_RESOURCES 512 /* Domain members share cpu pkg resources */
+#define SD_SERIALIZE 1024 /* Only a single load balancing instance */
-#define BALANCE_FOR_POWER ((sched_mc_power_savings || sched_smt_power_savings) \
- ? SD_POWERSAVINGS_BALANCE : 0)
+#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_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 */
struct io_context; /* See blkdev.h */
-void exit_io_context(void);
struct cpuset;
#define NGROUPS_SMALL 32
struct audit_context; /* See audit.c */
struct mempolicy;
struct pipe_inode_info;
+struct uts_namespace;
enum sleep_type {
SLEEP_NORMAL,
struct thread_info *thread_info;
atomic_t usage;
unsigned long flags; /* per process flags, defined below */
- unsigned long ptrace;
int lock_depth; /* BKL lock depth */
struct prio_array *array;
unsigned short ioprio;
+#ifdef CONFIG_BLK_DEV_IO_TRACE
unsigned int btrace_seq;
-
+#endif
unsigned long sleep_avg;
unsigned long long timestamp, last_ran;
unsigned long long sched_time; /* sched_clock time spent running */
#endif
struct list_head tasks;
- /*
- * ptrace_list/ptrace_children forms the list of my children
- * that were stolen by a ptracer.
- */
- struct list_head ptrace_children;
- struct list_head ptrace_list;
struct mm_struct *mm, *active_mm;
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,
+ * pointers to parent process, youngest child, younger sibling,
* older sibling, respectively. (p->father can be replaced with
* p->parent->pid)
*/
- struct task_struct *real_parent; /* real parent process (when being debugged) */
struct task_struct *parent; /* parent process */
/*
- * children/sibling forms the list of my children plus the
- * tasks I'm ptracing.
+ * children/sibling forms the list of my children
*/
struct list_head children; /* list of my children */
struct list_head sibling; /* linkage in my parent's children list */
struct key *thread_keyring; /* keyring private to this thread */
unsigned char jit_keyring; /* default keyring to attach requested keys to */
#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;
int oomkilladj; /* OOM kill score adjustment (bit shift). */
char comm[TASK_COMM_LEN]; /* executable name excluding path
- access with [gs]et_task_comm (which 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
/* CPU-specific state of this task */
struct thread_struct thread;
/* filesystem information */
struct fs_struct *fs;
/* open file information */
struct files_struct *files;
-/* namespace */
- struct namespace *namespace;
+/* namespaces */
+ struct nsproxy *nsproxy;
/* signal handlers */
struct signal_struct *signal;
struct sighand_struct *sighand;
int (*notifier)(void *priv);
void *notifier_data;
sigset_t *notifier_mask;
-
- /* TUX state */
- void *tux_info;
- void (*tux_exit)(void);
-
void *security;
struct audit_context *audit_context;
seccomp_t seccomp;
+#ifdef CONFIG_UTRACE
+ struct utrace *utrace;
+ unsigned long utrace_flags;
+#endif
+
/* Thread group tracking */
u32 parent_exec_id;
u32 self_exec_id;
struct io_context *io_context;
- unsigned long ptrace_message;
- siginfo_t *last_siginfo; /* For ptrace use. */
/*
* current io wait handle: wait queue entry to use for io waits
* If this thread is processing aio, this points at the waitqueue
wait_queue_t *io_wait;
/* i/o counters(bytes read/written, #syscalls */
u64 rchar, wchar, syscr, syscw;
-#if defined(CONFIG_BSD_PROCESS_ACCT)
+ 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 */
- clock_t acct_stimexpd; /* clock_t-converted stime since last update */
+ cputime_t acct_stimexpd;/* stime since last update */
#endif
#ifdef CONFIG_NUMA
struct mempolicy *mempolicy;
atomic_t fs_excl; /* holding fs exclusive resources */
struct rcu_head rcu;
+#ifdef CONFIG_PTRACE
+ struct list_head ptracees;
+#endif
+
/*
* cache last used pipe for splice
*/
#ifdef CONFIG_TASK_DELAY_ACCT
struct task_delay_info *delays;
#endif
+#ifdef CONFIG_FAULT_INJECTION
+ int make_it_fail;
+#endif
};
static inline pid_t process_group(struct task_struct *tsk)
return tsk->signal->pgrp;
}
+static inline pid_t signal_session(struct signal_struct *sig)
+{
+ return sig->__session;
+}
+
+static inline pid_t process_session(struct task_struct *tsk)
+{
+ return signal_session(tsk->signal);
+}
+
+static inline void set_signal_session(struct signal_struct *sig, pid_t session)
+{
+ sig->__session = session;
+}
+
+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;
+}
+
/**
* pid_alive - check that a task structure is not stale
* @p: Task structure to be checked.
return p->pids[PIDTYPE_PID].pid != NULL;
}
+/**
+ * is_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_init(struct task_struct *tsk)
+{
+ return tsk->pid == 1;
+}
+
+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)
/* Not implemented yet, only for 486*/
#define PF_STARTING 0x00000002 /* being created */
#define PF_EXITING 0x00000004 /* getting shut down */
-#define PF_DEAD 0x00000008 /* Dead */
#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_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_FREEZE 0x00004000 /* this task is being frozen for suspend now */
#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 */
extern struct mm_struct init_mm;
-
#define find_task_by_real_pid(nr) \
find_task_by_pid_type(PIDTYPE_REALPID, nr)
#define find_task_by_pid(nr) \
find_task_by_pid_type(PIDTYPE_PID, nr)
extern struct task_struct *find_task_by_pid_type(int type, int pid);
-extern void set_special_pids(pid_t session, pid_t pgrp);
extern void __set_special_pids(pid_t session, pid_t pgrp);
/* per-UID process charging. */
#include <asm/current.h>
-extern void do_timer(struct pt_regs *);
+extern void do_timer(unsigned long ticks);
extern int FASTCALL(wake_up_state(struct task_struct * tsk, unsigned int state));
extern int FASTCALL(wake_up_process(struct task_struct * tsk));
extern int send_group_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_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_pg_info(int sig, struct siginfo *info, pid_t pgrp);
extern int kill_pg_info(int, struct siginfo *, pid_t);
-extern int kill_proc_info(int, struct siginfo *, pid_t);
-extern int kill_proc_info_as_uid(int, struct siginfo *, pid_t, uid_t, uid_t, u32);
extern void do_notify_parent(struct task_struct *, int);
+extern void do_notify_parent_cldstop(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 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)
extern void daemonize(const char *, ...);
extern int allow_signal(int);
extern int disallow_signal(int);
-extern struct task_struct *child_reaper;
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 *);
/* 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 struct task_struct *next_thread(const struct task_struct *p)
{
return list_entry(rcu_dereference(p->thread_group.next),
extern void normalize_rt_tasks(void);
-#ifdef CONFIG_PM
-/*
- * Check if a process has been frozen
- */
-static inline int frozen(struct task_struct *p)
-{
- return p->flags & PF_FROZEN;
-}
-
-/*
- * Check if there is a request to freeze a process
- */
-static inline int freezing(struct task_struct *p)
-{
- return p->flags & PF_FREEZE;
-}
-
-/*
- * Request that a process be frozen
- * FIXME: SMP problem. We may not modify other process' flags!
- */
-static inline void freeze(struct task_struct *p)
-{
- p->flags |= PF_FREEZE;
-}
-
-/*
- * Sometimes we may need to cancel the previous 'freeze' request
- */
-static inline void do_not_freeze(struct task_struct *p)
-{
- p->flags &= ~PF_FREEZE;
-}
-
-/*
- * Wake up a frozen process
- */
-static inline int thaw_process(struct task_struct *p)
-{
- if (frozen(p)) {
- p->flags &= ~PF_FROZEN;
- wake_up_process(p);
- return 1;
- }
- return 0;
-}
-
-/*
- * freezing is complete, mark process as frozen
- */
-static inline void frozen_process(struct task_struct *p)
-{
- p->flags = (p->flags & ~PF_FREEZE) | PF_FROZEN;
-}
-
-extern void refrigerator(void);
-extern int freeze_processes(void);
-extern void thaw_processes(void);
-
-static inline int try_to_freeze(void)
-{
- if (freezing(current)) {
- refrigerator();
- return 1;
- } else
- return 0;
-}
-#else
-static inline int frozen(struct task_struct *p) { return 0; }
-static inline int freezing(struct task_struct *p) { return 0; }
-static inline void freeze(struct task_struct *p) { BUG(); }
-static inline int thaw_process(struct task_struct *p) { return 1; }
-static inline void frozen_process(struct task_struct *p) { BUG(); }
-
-static inline void refrigerator(void) {}
-static inline int freeze_processes(void) { BUG(); return 0; }
-static inline void thaw_processes(void) {}
-
-static inline int try_to_freeze(void) { return 0; }
-
-#endif /* CONFIG_PM */
#endif /* __KERNEL__ */
#endif
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