Exemplos de rcu_print_task_stall em C++ (Cpp)

Exemplo n.º 1

static void print_other_cpu_stall(struct rcu_state *rsp)
{
	int cpu;
	long delta;
	unsigned long flags;
	struct rcu_node *rnp = rcu_get_root(rsp);

	

	spin_lock_irqsave(&rnp->lock, flags);
	delta = jiffies - rsp->jiffies_stall;
	if (delta < RCU_STALL_RAT_DELAY || !rcu_gp_in_progress(rsp)) {
		spin_unlock_irqrestore(&rnp->lock, flags);
		return;
	}
	rsp->jiffies_stall = jiffies + RCU_SECONDS_TILL_STALL_RECHECK;

	
	rcu_print_task_stall(rnp);
	spin_unlock_irqrestore(&rnp->lock, flags);

	

	printk(KERN_ERR "INFO: RCU detected CPU stalls:");
	rcu_for_each_leaf_node(rsp, rnp) {
		rcu_print_task_stall(rnp);
		if (rnp->qsmask == 0)
			continue;
		for (cpu = 0; cpu <= rnp->grphi - rnp->grplo; cpu++)
			if (rnp->qsmask & (1UL << cpu))
				printk(" %d", rnp->grplo + cpu);
	}

Exemplo n.º 2

Arquivo: rcutree.c Projeto: mjduddin/B14CKB1RD_kernel_m8

static void print_other_cpu_stall(struct rcu_state *rsp)
{
	int cpu;
	long delta;
	unsigned long flags;
	int ndetected = 0;
	struct rcu_node *rnp = rcu_get_root(rsp);

	

	raw_spin_lock_irqsave(&rnp->lock, flags);
	delta = jiffies - rsp->jiffies_stall;
	if (delta < RCU_STALL_RAT_DELAY || !rcu_gp_in_progress(rsp)) {
		raw_spin_unlock_irqrestore(&rnp->lock, flags);
		return;
	}
	rsp->jiffies_stall = jiffies + 3 * jiffies_till_stall_check() + 3;
	raw_spin_unlock_irqrestore(&rnp->lock, flags);

	printk(KERN_ERR "INFO: %s detected stalls on CPUs/tasks:",
	       rsp->name);
	print_cpu_stall_info_begin();
	rcu_for_each_leaf_node(rsp, rnp) {
		raw_spin_lock_irqsave(&rnp->lock, flags);
		ndetected += rcu_print_task_stall(rnp);
		raw_spin_unlock_irqrestore(&rnp->lock, flags);
		if (rnp->qsmask == 0)
			continue;
		for (cpu = 0; cpu <= rnp->grphi - rnp->grplo; cpu++)
			if (rnp->qsmask & (1UL << cpu)) {
				print_cpu_stall_info(rsp, rnp->grplo + cpu);
				ndetected++;
			}
	}

Exemplo n.º 3

Arquivo: rcutree.c Projeto: flwh/Alcatel_OT_985_kernel

static void print_other_cpu_stall(struct rcu_state *rsp)
{
	int cpu;
	long delta;
	unsigned long flags;
	struct rcu_node *rnp = rcu_get_root(rsp);

	/* Only let one CPU complain about others per time interval. */

	raw_spin_lock_irqsave(&rnp->lock, flags);
	delta = jiffies - rsp->jiffies_stall;
	if (delta < RCU_STALL_RAT_DELAY || !rcu_gp_in_progress(rsp)) {
		raw_spin_unlock_irqrestore(&rnp->lock, flags);
		return;
	}
	rsp->jiffies_stall = jiffies + RCU_SECONDS_TILL_STALL_RECHECK;

	/*
	 * Now rat on any tasks that got kicked up to the root rcu_node
	 * due to CPU offlining.
	 */
	rcu_print_task_stall(rnp);
	raw_spin_unlock_irqrestore(&rnp->lock, flags);

	/* OK, time to rat on our buddy... */

	printk(KERN_ERR "INFO: %s detected stalls on CPUs/tasks: {",
	       rsp->name);
	rcu_for_each_leaf_node(rsp, rnp) {
		raw_spin_lock_irqsave(&rnp->lock, flags);
		rcu_print_task_stall(rnp);
		raw_spin_unlock_irqrestore(&rnp->lock, flags);
		if (rnp->qsmask == 0)
			continue;
		for (cpu = 0; cpu <= rnp->grphi - rnp->grplo; cpu++)
			if (rnp->qsmask & (1UL << cpu))
				printk(" %d", rnp->grplo + cpu);
	}

Exemplo n.º 4

Arquivo: rcutree.c Projeto: mjduddin/B14CKB1RD_kernel_m8

	rcu_for_each_leaf_node(rsp, rnp) {
		raw_spin_lock_irqsave(&rnp->lock, flags);
		ndetected += rcu_print_task_stall(rnp);
		raw_spin_unlock_irqrestore(&rnp->lock, flags);
		if (rnp->qsmask == 0)
			continue;
		for (cpu = 0; cpu <= rnp->grphi - rnp->grplo; cpu++)
			if (rnp->qsmask & (1UL << cpu)) {
				print_cpu_stall_info(rsp, rnp->grplo + cpu);
				ndetected++;
			}
	}

	rnp = rcu_get_root(rsp);
	raw_spin_lock_irqsave(&rnp->lock, flags);
	ndetected = rcu_print_task_stall(rnp);
	raw_spin_unlock_irqrestore(&rnp->lock, flags);

	print_cpu_stall_info_end();
	printk(KERN_CONT "(detected by %d, t=%ld jiffies)\n",
	       smp_processor_id(), (long)(jiffies - rsp->gp_start));
	if (ndetected == 0)
		printk(KERN_ERR "INFO: Stall ended before state dump start\n");
	else if (!trigger_all_cpu_backtrace())
		dump_stack();

	

	rcu_print_detail_task_stall(rsp);

	force_quiescent_state(rsp, 0);