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runqueue结构体的完整定义在哪里?

发布于 2022-10-15 07:39:08 字数 154 浏览 23 评论 0

2.6.31还是在sched.c里的,但是我现在用的2.6.37的内核怎么就找不到了..只有个声明：

struct rq;

在/linux/sched.h里也找不到,只有个声明..用了grep命令了还是没有迹象,难道不是在/kernel和/linux下的?

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掩耳倾听 2022-10-22 07:39:08

回复 1# wasyyyy
我这没有你那个版本的内核。
你可以用ctags啊，应该非常方便查找啊。

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赠意 2022-10-22 07:39:08

我用最新的 2.6.38.4 在../kernel/sched.c中都还能找到啊没理由你那个版本没有啊

/*
* This is the main, per-CPU runqueue data structure.
*
* Locking rule: those places that want to lock multiple runqueues
* (such as the load balancing or the thread migration code), lock
* acquire operations must be ordered by ascending &runqueue.
*/
struct rq {
/* runqueue lock: */
raw_spinlock_t lock;

/*
   * nr_running and cpu_load should be in the same cacheline because
   * remote CPUs use both these fields when doing load calculation.
   */
unsigned long nr_running;
#define CPU_LOAD_IDX_MAX 5
unsigned long cpu_load[CPU_LOAD_IDX_MAX];
unsigned long last_load_update_tick;
#ifdef CONFIG_NO_HZ
u64 nohz_stamp;
unsigned char nohz_balance_kick;
#endif
unsigned int skip_clock_update;

/* capture load from *all* tasks on this cpu: */
struct load_weight load;
unsigned long nr_load_updates;
u64 nr_switches;

struct cfs_rq cfs;
struct rt_rq rt;

#ifdef CONFIG_FAIR_GROUP_SCHED
/* list of leaf cfs_rq on this cpu: */
struct list_head leaf_cfs_rq_list;
#endif
#ifdef CONFIG_RT_GROUP_SCHED
struct list_head leaf_rt_rq_list;
#endif

/*
   * This is part of a global counter where only the total sum
   * over all CPUs matters. A task can increase this counter on
   * one CPU and if it got migrated afterwards it may decrease
   * it on another CPU. Always updated under the runqueue lock:
   */
unsigned long nr_uninterruptible;

struct task_struct *curr, *idle, *stop;
unsigned long next_balance;
struct mm_struct *prev_mm;

u64 clock;
u64 clock_task;

atomic_t nr_iowait;

#ifdef CONFIG_SMP
struct root_domain *rd;
struct sched_domain *sd;

unsigned long cpu_power;

unsigned char idle_at_tick;
/* For active balancing */
int post_schedule;
int active_balance;
int push_cpu;
struct cpu_stop_work active_balance_work;
/* cpu of this runqueue: */
int cpu;
int online;

unsigned long avg_load_per_task;

u64 rt_avg;
u64 age_stamp;
u64 idle_stamp;
u64 avg_idle;
#endif

#ifdef CONFIG_IRQ_TIME_ACCOUNTING
u64 prev_irq_time;
#endif

/* calc_load related fields */
unsigned long calc_load_update;
long calc_load_active;

#ifdef CONFIG_SCHED_HRTICK
#ifdef CONFIG_SMP
int hrtick_csd_pending;
struct call_single_data hrtick_csd;
#endif
struct hrtimer hrtick_timer;
#endif

#ifdef CONFIG_SCHEDSTATS
/* latency stats */
struct sched_info rq_sched_info;
unsigned long long rq_cpu_time;
/* could above be rq->cfs_rq.exec_clock + rq->rt_rq.rt_runtime ? */

/* sys_sched_yield() stats */
unsigned int yld_count;

/* schedule() stats */
unsigned int sched_switch;
unsigned int sched_count;
unsigned int sched_goidle;

/* try_to_wake_up() stats */
unsigned int ttwu_count;
unsigned int ttwu_local;
#endif
};

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