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C++ cputime_sub函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中cputime_sub函数的典型用法代码示例。如果您正苦于以下问题：C++ cputime_sub函数的具体用法？C++ cputime_sub怎么用？C++ cputime_sub使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了cputime_sub函数的9个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: end_mtproc_info

void end_mtproc_info(struct task_struct *p)
{
	struct mt_proc_struct *mtproc = mt_proc_head;

	mutex_lock(&mt_cputime_lock);
	//check profiling enable flag
	if(0 == mtsched_enabled)
	{
		mutex_unlock(&mt_cputime_lock);
		return;
	}

	//may waste time...
	while(mtproc != NULL)
	{
		if(p->pid != mtproc->pid)
		{
			mtproc = mtproc->next;
		}
		else
		{
			break;
		}
	}
	/*	
	for(i=0;i<proc_count; i++){
	if(p->pid == mt_proc[i]->pid)
	break;
	}
	*/
	if(mtproc == NULL)
	// if(i == proc_count)
	{
		printk("pid:%d can't be found in mtsched proc_info.\n",p->pid);
		mutex_unlock(&mt_cputime_lock);	
		return;
	}
	mtproc->prof_end = sched_clock();
	/* update cputime */
	mtproc->cputime = p->se.sum_exec_runtime;
	mtproc->isr_time = p->se.mtk_isr_time;
	mtproc->isr_count = p->se.mtk_isr_count;
	mtproc->mtk_isr = p->se.mtk_isr;
	p->se.mtk_isr = NULL;
	mt_task_times(p,&mtproc->utime, &mtproc->stime);
	mtproc->utime = cputime_sub(mtproc->utime, mtproc->utime_init);
	mtproc->stime = cputime_sub(mtproc->stime, mtproc->stime_init);

	mutex_unlock(&mt_cputime_lock);
	return;
}
开发者ID:5C4R4B3，项目名称:CINK_SLIM_ICS_Opensource，代码行数:51，代码来源:prof_ctl.c


示例2: get_cpu_itimer

static void get_cpu_itimer(struct task_struct *tsk, unsigned int clock_id,
			   struct itimerval *const value)
{
	cputime_t cval, cinterval;
	struct cpu_itimer *it = &tsk->signal->it[clock_id];

	spin_lock_irq(&tsk->sighand->siglock);

	cval = it->expires;
	cinterval = it->incr;
	if (!cputime_eq(cval, cputime_zero)) {
		struct task_cputime cputime;
		cputime_t t;

		thread_group_cputimer(tsk, &cputime);
		if (clock_id == CPUCLOCK_PROF)
			t = cputime_add(cputime.utime, cputime.stime);
		else
			/* CPUCLOCK_VIRT */
			t = cputime.utime;

		if (cputime_le(cval, t))
			/* about to fire */
			cval = cputime_one_jiffy;
		else
			cval = cputime_sub(cval, t);
	}

	spin_unlock_irq(&tsk->sighand->siglock);

	cputime_to_timeval(cval, &value->it_value);
	cputime_to_timeval(cinterval, &value->it_interval);
}
开发者ID:CSCLOG，项目名称:beaglebone，代码行数:33，代码来源:itimer.c


示例3: thread_group_cpu_share

static ushort thread_group_cpu_share(struct task_struct *task) 
{
  struct task_cputime times;
  cputime_t num_load, div_load, total_time;
  ushort share;

  my_thread_group_cputime(task, &times);  
  total_time = cputime_add(times.utime, times.stime);
  /*
    last_cputime == 0 means that the timer_function has been called
    for the first time and we have to collect info before doing any
    check.
  */
  if (unlikely(last_cputime == 0)) {
    share = 0;
    printk(KERN_INFO "sendsig: timer initialization completed\n");
  } else {
    /*
      Let's compute the share of cpu usage for the last WAIT_TIMEOUT
      seconds
    */
    num_load = cputime_sub(total_time, last_cputime) * 100;
    div_load = jiffies_to_cputime(wait_timeout * HZ);
    share = (ushort)cputime_div(num_load, div_load);
    
    printk(KERN_DEBUG "sendsig: computed cpu share for process %d: %d\n", 
	   pid, share);
  }
  /*
    Update last_cputime
  */
  last_cputime = total_time;

  return share;
}
开发者ID:DavidePastore，项目名称:sendsig，代码行数:35，代码来源:sendsig.c


示例4: update_busfreq_stat

void update_busfreq_stat(struct busfreq_data *data, unsigned int index)
{
#ifdef BUSFREQ_DEBUG
	unsigned long long cur_time = get_jiffies_64();
	data->time_in_state[index] = cputime64_add(data->time_in_state[index], cputime_sub(cur_time, data->last_time));
	data->last_time = cur_time;
#endif
}
开发者ID:svncibrahim，项目名称:willow_kernel，代码行数:8，代码来源:busfreq_opp_exynos4.c


示例5: cpufreq_stats_update

static int cpufreq_stats_update(unsigned int cpu)
{
	struct cpufreq_stats *stat;
	unsigned long long cur_time;

	cur_time = get_jiffies_64();
	spin_lock(&cpufreq_stats_lock);
	stat = per_cpu(cpufreq_stats_table, cpu);
	if (!stat) {
		spin_unlock(&cpufreq_stats_lock);
		return 0;
	}

	if (stat->time_in_state)
		stat->time_in_state[stat->last_index] =
			cputime64_add(stat->time_in_state[stat->last_index],
				      cputime_sub(cur_time, stat->last_time));

	if (cpu == 0)
		cpu0_time_in_state[stat->last_index] =
			cputime64_add(cpu0_time_in_state[stat->last_index],
			cputime_sub(cur_time, stat->last_time));
	else if (cpu == 1)
		cpu1_time_in_state[stat->last_index] =
			cputime64_add(cpu1_time_in_state[stat->last_index],
			cputime_sub(cur_time, stat->last_time));
#ifdef CONFIG_QUAD_CORES_SOC_STAT
	else if (cpu == 2)
		cpu2_time_in_state[stat->last_index] =
			cputime64_add(cpu2_time_in_state[stat->last_index],
			cputime_sub(cur_time, stat->last_time));
	else if (cpu == 3)
		cpu3_time_in_state[stat->last_index] =
			cputime64_add(cpu3_time_in_state[stat->last_index],
			cputime_sub(cur_time, stat->last_time));
#endif
	stat->last_time = cur_time;
	spin_unlock(&cpufreq_stats_lock);
	return 0;
}
开发者ID:javilonas，项目名称:Thoth-GT-I9300-Sammy，代码行数:40，代码来源:cpufreq_stats.c


示例6: cpufreq_stats_update

static int
cpufreq_stats_update (unsigned int cpu)
{
	struct cpufreq_stats *stat;
	unsigned long long cur_time;

	cur_time = get_jiffies_64();
	spin_lock(&cpufreq_stats_lock);
	stat = cpufreq_stats_table[cpu];
	if (stat->time_in_state)
		stat->time_in_state[stat->last_index] =
			cputime64_add(stat->time_in_state[stat->last_index],
				      cputime_sub(cur_time, stat->last_time));
	stat->last_time = cur_time;
	spin_unlock(&cpufreq_stats_lock);
	return 0;
}
开发者ID:ManiacTwister，项目名称:linux-hnd，代码行数:17，代码来源:cpufreq_stats.c


示例7: cpufreq_stats_update

static int cpufreq_stats_update(unsigned int cpu)
{
	struct cpufreq_stats *stat;
	unsigned long long cur_time;

	cur_time = get_jiffies_64();
	spin_lock(&cpufreq_stats_lock);
	stat = per_cpu(cpufreq_stats_table, cpu);
#if defined (CONFIG_MACH_SAMSUNG_P5)
	if(!stat) {
		spin_unlock(&cpufreq_stats_lock);
		return -1;
	}
#endif

	if (stat->time_in_state && stat->last_index >= 0)
		stat->time_in_state[stat->last_index] =
			cputime64_add(stat->time_in_state[stat->last_index],
				      cputime_sub(cur_time, stat->last_time));
	stat->last_time = cur_time;
	spin_unlock(&cpufreq_stats_lock);
	return 0;
}
开发者ID:motley-git，项目名称:Kernel-GT-P73xx-v2，代码行数:23，代码来源:cpufreq_stats.c


示例8: acct_update_integrals

/**
 * acct_update_integrals - update mm integral fields in task_struct
 * @tsk: task_struct for accounting
 */
void acct_update_integrals(struct task_struct *tsk)
{
	if (likely(tsk->mm)) {
		cputime_t time, dtime;
		struct timeval value;
		unsigned long flags;
		u64 delta;

		local_irq_save(flags);
		time = tsk->stime + tsk->utime;
		dtime = cputime_sub(time, tsk->acct_timexpd);
		jiffies_to_timeval(cputime_to_jiffies(dtime), &value);
		delta = value.tv_sec;
		delta = delta * USEC_PER_SEC + value.tv_usec;

		if (delta == 0)
			goto out;
		tsk->acct_timexpd = time;
		tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm);
		tsk->acct_vm_mem1 += delta * tsk->mm->total_vm;
	out:
		local_irq_restore(flags);
	}
}
开发者ID:deepikateriar，项目名称:Onlive-Source-Backup，代码行数:28，代码来源:tsacct.c


示例9: do_getitimer

int do_getitimer(int which, struct itimerval *value)
{
	struct task_struct *tsk = current;
	cputime_t cinterval, cval;

	switch (which) {
	case ITIMER_REAL:
		spin_lock_irq(&tsk->sighand->siglock);
		value->it_value = itimer_get_remtime(&tsk->signal->real_timer);
		value->it_interval =
			ktime_to_timeval(tsk->signal->it_real_incr);
		spin_unlock_irq(&tsk->sighand->siglock);
		break;
	case ITIMER_VIRTUAL:
		read_lock(&tasklist_lock);
		spin_lock_irq(&tsk->sighand->siglock);
		cval = tsk->signal->it_virt_expires;
		cinterval = tsk->signal->it_virt_incr;
		if (!cputime_eq(cval, cputime_zero)) {
			struct task_struct *t = tsk;
			cputime_t utime = tsk->signal->utime;
			do {
				utime = cputime_add(utime, t->utime);
				t = next_thread(t);
			} while (t != tsk);
			if (cputime_le(cval, utime)) { /* about to fire */
				cval = jiffies_to_cputime(1);
			} else {
				cval = cputime_sub(cval, utime);
			}
		}
		spin_unlock_irq(&tsk->sighand->siglock);
		read_unlock(&tasklist_lock);
		cputime_to_timeval(cval, &value->it_value);
		cputime_to_timeval(cinterval, &value->it_interval);
		break;
	case ITIMER_PROF:
		read_lock(&tasklist_lock);
		spin_lock_irq(&tsk->sighand->siglock);
		cval = tsk->signal->it_prof_expires;
		cinterval = tsk->signal->it_prof_incr;
		if (!cputime_eq(cval, cputime_zero)) {
			struct task_struct *t = tsk;
			cputime_t ptime = cputime_add(tsk->signal->utime,
						      tsk->signal->stime);
			do {
				ptime = cputime_add(ptime,
						    cputime_add(t->utime,
								t->stime));
				t = next_thread(t);
			} while (t != tsk);
			if (cputime_le(cval, ptime)) { /* about to fire */
				cval = jiffies_to_cputime(1);
			} else {
				cval = cputime_sub(cval, ptime);
			}
		}
		spin_unlock_irq(&tsk->sighand->siglock);
		read_unlock(&tasklist_lock);
		cputime_to_timeval(cval, &value->it_value);
		cputime_to_timeval(cinterval, &value->it_interval);
		break;
	default:
		return(-EINVAL);
	}
	return 0;
}
开发者ID:FatSunHYS，项目名称:OSCourseDesign，代码行数:67，代码来源:itimer.c



注：本文中的cputime_sub函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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