#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/signal.h>
-#include <linux/fs_struct.h>
+#include <linux/path.h>
#include <linux/compiler.h>
#include <linux/completion.h>
#include <linux/pid.h>
struct robust_list_head;
struct bio;
struct bts_tracer;
+struct fs_struct;
/*
* List of flags we want to share for kernel threads,
extern unsigned long nr_active(void);
extern unsigned long nr_iowait(void);
+extern unsigned long get_parent_ip(unsigned long addr);
+
struct seq_file;
struct cfs_rq;
struct task_group;
struct file *filp, void __user *buffer,
size_t *lenp, loff_t *ppos);
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)
{
}
}
#endif
+#ifdef CONFIG_DETECT_HUNG_TASK
+extern unsigned int sysctl_hung_task_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 proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
+ struct file *filp, void __user *buffer,
+ size_t *lenp, loff_t *ppos);
+#endif
/* Attach to any functions which should be ignored in wchan output. */
#define __sched __attribute__((__section__(".sched.text")))
(mm)->hiwater_vm = (mm)->total_vm; \
} while (0)
-#define get_mm_hiwater_rss(mm) max((mm)->hiwater_rss, get_mm_rss(mm))
-#define get_mm_hiwater_vm(mm) max((mm)->hiwater_vm, (mm)->total_vm)
+static inline unsigned long get_mm_hiwater_rss(struct mm_struct *mm)
+{
+ return max(mm->hiwater_rss, get_mm_rss(mm));
+}
+
+static inline unsigned long get_mm_hiwater_vm(struct mm_struct *mm)
+{
+ return max(mm->hiwater_vm, mm->total_vm);
+}
extern void set_dumpable(struct mm_struct *mm, int value);
extern int get_dumpable(struct mm_struct *mm);
struct list_head cpu_timers[3];
- /* 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;
/* ipc stuff */
struct sysv_sem sysvsem;
#endif
-#ifdef CONFIG_DETECT_SOFTLOCKUP
+#ifdef CONFIG_DETECT_HUNG_TASK
/* hung task detection */
- unsigned long last_switch_timestamp;
unsigned long last_switch_count;
#endif
/* CPU-specific state of this task */
/* Protection of (de-)allocation: mm, files, fs, tty, keyrings */
spinlock_t alloc_lock;
+#ifdef CONFIG_GENERIC_HARDIRQS
+ /* IRQ handler threads */
+ struct irqaction *irqaction;
+#endif
+
/* Protection of the PI data structures: */
spinlock_t pi_lock;
int curr_ret_stack;
/* Stack of return addresses for return function tracing */
struct ftrace_ret_stack *ret_stack;
+ /* time stamp for last schedule */
+ unsigned long long ftrace_timestamp;
/*
* Number of functions that haven't been traced
* because of depth overrun.
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;
return task->group_leader->pids[PIDTYPE_PID].pid;
}
+/*
+ * Without tasklist or rcu lock it is not safe to dereference
+ * the result of task_pgrp/task_session even if task == current,
+ * we can race with another thread doing sys_setsid/sys_setpgid.
+ */
static inline struct pid *task_pgrp(struct task_struct *task)
{
return task->group_leader->pids[PIDTYPE_PGID].pid;
*
* see also pid_nr() etc in include/linux/pid.h
*/
+pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
+ struct pid_namespace *ns);
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_nr_ns(struct task_struct *tsk,
+ struct pid_namespace *ns)
+{
+ return __task_pid_nr_ns(tsk, PIDTYPE_PID, ns);
+}
static inline pid_t task_pid_vnr(struct task_struct *tsk)
{
- return pid_vnr(task_pid(tsk));
+ return __task_pid_nr_ns(tsk, PIDTYPE_PID, NULL);
}
}
-static inline pid_t task_pgrp_nr(struct task_struct *tsk)
+static inline pid_t task_pgrp_nr_ns(struct task_struct *tsk,
+ struct pid_namespace *ns)
{
- return tsk->signal->__pgrp;
+ return __task_pid_nr_ns(tsk, PIDTYPE_PGID, ns);
}
-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));
+ return __task_pid_nr_ns(tsk, PIDTYPE_PGID, NULL);
}
-static inline pid_t task_session_nr(struct task_struct *tsk)
+static inline pid_t task_session_nr_ns(struct task_struct *tsk,
+ struct pid_namespace *ns)
{
- return tsk->signal->__session;
+ return __task_pid_nr_ns(tsk, PIDTYPE_SID, ns);
}
-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));
+ return __task_pid_nr_ns(tsk, PIDTYPE_SID, NULL);
}
+/* obsolete, do not use */
+static inline pid_t task_pgrp_nr(struct task_struct *tsk)
+{
+ return task_pgrp_nr_ns(tsk, &init_pid_ns);
+}
/**
* pid_alive - check that a task structure is not stale
/* 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 int copy_thread(unsigned long, unsigned long, unsigned long,
+ struct task_struct *, struct pt_regs *);
extern void flush_thread(void);
extern void exit_thread(void);
#define delay_group_leader(p) \
(thread_group_leader(p) && !thread_group_empty(p))
+static inline int task_detached(struct task_struct *p)
+{
+ return p->exit_signal == -1;
+}
+
/*
* Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring
* subscriptions and synchronises with wait4(). Also used in procfs. Also
projects / linux-2.6-omap-h63xx.git / blobdiff