rename thread_info to stack

[safe/jmp/linux-2.6] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 4463735..17b72d8 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -194,15 +194,23 @@ extern void sched_init_smp(void);
 extern void init_idle(struct task_struct *idle, int cpu);
 
 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
 
 /*
- * Only dump TASK_* tasks. (-1 for all tasks)
+ * 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(-1);
+       show_state_filter(0);
 }
 
 extern void show_regs(struct pt_regs *);
@@ -226,6 +234,7 @@ extern void scheduler_tick(void);
 extern void softlockup_tick(void);
 extern void spawn_softlockup_task(void);
 extern void touch_softlockup_watchdog(void);
+extern void touch_all_softlockup_watchdogs(void);
 #else
 static inline void softlockup_tick(void)
 {
@@ -236,6 +245,9 @@ static inline void spawn_softlockup_task(void)
 static inline void touch_softlockup_watchdog(void)
 {
 }
+static inline void touch_all_softlockup_watchdogs(void)
+{
+}
 #endif
 
 
@@ -436,7 +448,7 @@ struct signal_struct {
 
        /* job control IDs */
        pid_t pgrp;
-       pid_t tty_old_pgrp;
+       struct pid *tty_old_pgrp;
 
        union {
                pid_t session __deprecated;
@@ -668,8 +680,14 @@ struct sched_group {
        /*
         * 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)
         */
-       unsigned long cpu_power;
+       u32 reciprocal_cpu_power;
 };
 
 struct sched_domain {
@@ -684,7 +702,6 @@ struct sched_domain {
        unsigned int imbalance_pct;     /* No balance until over watermark */
        unsigned long long cache_hot_time; /* Task considered cache hot (ns) */
        unsigned int cache_nice_tries;  /* Leave cache hot tasks for # tries */
-       unsigned int per_cpu_gain;      /* CPU % gained by adding domain cpus */
        unsigned int busy_idx;
        unsigned int idle_idx;
        unsigned int newidle_idx;
@@ -800,10 +817,10 @@ struct prio_array;
 
 struct task_struct {
        volatile long state;    /* -1 unrunnable, 0 runnable, >0 stopped */
-       struct thread_info *thread_info;
+       void *stack;
        atomic_t usage;
-       unsigned long flags;    /* per process flags, defined below */
-       unsigned long ptrace;
+       unsigned int flags;     /* per process flags, defined below */
+       unsigned int ptrace;
 
        int lock_depth;         /* BKL lock depth */
 
@@ -826,7 +843,7 @@ struct task_struct {
        unsigned long long sched_time; /* sched_clock time spent running */
        enum sleep_type sleep_type;
 
-       unsigned long policy;
+       unsigned int policy;
        cpumask_t cpus_allowed;
        unsigned int time_slice, first_time_slice;
 
@@ -846,11 +863,11 @@ struct task_struct {
 
 /* task state */
        struct linux_binfmt *binfmt;
-       long exit_state;
+       int exit_state;
        int exit_code, exit_signal;
        int pdeath_signal;  /*  The signal sent when the parent dies  */
        /* ??? */
-       unsigned long personality;
+       unsigned int personality;
        unsigned did_exec:1;
        pid_t pid;
        pid_t tgid;
@@ -882,7 +899,7 @@ struct task_struct {
        int __user *set_child_tid;              /* CLONE_CHILD_SETTID */
        int __user *clear_child_tid;            /* CLONE_CHILD_CLEARTID */
 
-       unsigned long rt_priority;
+       unsigned int rt_priority;
        cputime_t utime, stime;
        unsigned long nvcsw, nivcsw; /* context switch counts */
        struct timespec start_time;
@@ -1013,8 +1030,10 @@ struct task_struct {
  * to a stack based synchronous wait) if its doing sync IO.
  */
        wait_queue_t *io_wait;
+#ifdef CONFIG_TASK_XACCT
 /* i/o counters(bytes read/written, #syscalls */
        u64 rchar, wchar, syscr, syscw;
+#endif
        struct task_io_accounting ioac;
 #if defined(CONFIG_TASK_XACCT)
        u64 acct_rss_mem1;      /* accumulated rss usage */
@@ -1298,6 +1317,7 @@ 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);
 
@@ -1327,14 +1347,12 @@ 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 void 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 int kill_pg(pid_t, int, int);
 extern int kill_proc(pid_t, int, int);
 extern struct sigqueue *sigqueue_alloc(void);
 extern void sigqueue_free(struct sigqueue *);
@@ -1495,8 +1513,8 @@ static inline void unlock_task_sighand(struct task_struct *tsk,
 
 #ifndef __HAVE_THREAD_FUNCTIONS
 
-#define task_thread_info(task) (task)->thread_info
-#define task_stack_page(task) ((void*)((task)->thread_info))
+#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)
 {
@@ -1506,7 +1524,7 @@ static inline void setup_thread_stack(struct task_struct *p, struct task_struct
 
 static inline unsigned long *end_of_stack(struct task_struct *p)
 {
-       return (unsigned long *)(p->thread_info + 1);
+       return (unsigned long *)(task_thread_info(p) + 1);
 }
 
 #endif
@@ -1642,13 +1660,48 @@ static inline void arch_pick_mmap_layout(struct mm_struct *mm)
 extern long sched_setaffinity(pid_t pid, cpumask_t new_mask);
 extern long sched_getaffinity(pid_t pid, cpumask_t *mask);
 
-#include <linux/sysdev.h>
 extern int sched_mc_power_savings, sched_smt_power_savings;
-extern struct sysdev_attribute attr_sched_mc_power_savings, attr_sched_smt_power_savings;
-extern int sched_create_sysfs_power_savings_entries(struct sysdev_class *cls);
 
 extern void normalize_rt_tasks(void);
 
+#ifdef CONFIG_TASK_XACCT
+static inline void add_rchar(struct task_struct *tsk, ssize_t amt)
+{
+       tsk->rchar += amt;
+}
+
+static inline void add_wchar(struct task_struct *tsk, ssize_t amt)
+{
+       tsk->wchar += amt;
+}
+
+static inline void inc_syscr(struct task_struct *tsk)
+{
+       tsk->syscr++;
+}
+
+static inline void inc_syscw(struct task_struct *tsk)
+{
+       tsk->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
+
 #endif /* __KERNEL__ */
 
 #endif