diff options
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 1c4f3e9..cf0eb34 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -273,9 +273,11 @@ extern int runqueue_is_locked(int cpu); #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ) extern void select_nohz_load_balancer(int stop_tick); +extern void set_cpu_sd_state_idle(void); extern int get_nohz_timer_target(void); #else static inline void select_nohz_load_balancer(int stop_tick) { } +static inline void set_cpu_sd_state_idle(void) { } #endif /* @@ -483,8 +485,8 @@ struct task_cputime { #define INIT_CPUTIME \ (struct task_cputime) { \ - .utime = cputime_zero, \ - .stime = cputime_zero, \ + .utime = 0, \ + .stime = 0, \ .sum_exec_runtime = 0, \ } @@ -901,6 +903,10 @@ struct sched_group_power { * single CPU. */ unsigned int power, power_orig; + /* + * Number of busy cpus in this group. + */ + atomic_t nr_busy_cpus; }; struct sched_group { @@ -925,6 +931,15 @@ static inline struct cpumask *sched_group_cpus(struct sched_group *sg) return to_cpumask(sg->cpumask); } +/** + * group_first_cpu - Returns the first cpu in the cpumask of a sched_group. + * @group: The group whose first cpu is to be returned. + */ +static inline unsigned int group_first_cpu(struct sched_group *group) +{ + return cpumask_first(sched_group_cpus(group)); +} + struct sched_domain_attr { int relax_domain_level; }; @@ -1315,8 +1330,8 @@ struct task_struct { * older sibling, respectively. (p->father can be replaced with * p->real_parent->pid) */ - struct task_struct *real_parent; /* real parent process */ - struct task_struct *parent; /* recipient of SIGCHLD, wait4() reports */ + struct task_struct __rcu *real_parent; /* real parent process */ + struct task_struct __rcu *parent; /* recipient of SIGCHLD, wait4() reports */ /* * children/sibling forms the list of my natural children */ @@ -2070,6 +2085,14 @@ extern int sched_setscheduler(struct task_struct *, int, extern int sched_setscheduler_nocheck(struct task_struct *, int, const struct sched_param *); extern struct task_struct *idle_task(int cpu); +/** + * is_idle_task - is the specified task an idle task? + * @tsk: the task in question. + */ +static inline bool is_idle_task(struct task_struct *p) +{ + return p->pid == 0; +} extern struct task_struct *curr_task(int cpu); extern void set_curr_task(int cpu, struct task_struct *p); |