Release 4.7 kernel/irq/migration.c

#include <linux/irq.h>
#include <linux/interrupt.h>

#include "internals.h"



void irq_move_masked_irq(struct irq_data *idata)
{
	struct irq_desc *desc = irq_data_to_desc(idata);
	struct irq_chip *chip = desc->irq_data.chip;

	if (likely(!irqd_is_setaffinity_pending(&desc->irq_data)))
		return;

	irqd_clr_move_pending(&desc->irq_data);

	/*
         * Paranoia: cpu-local interrupts shouldn't be calling in here anyway.
         */
	if (irqd_is_per_cpu(&desc->irq_data)) {
		WARN_ON(1);
		return;
	}

	if (unlikely(cpumask_empty(desc->pending_mask)))
		return;

	if (!chip->irq_set_affinity)
		return;

	assert_raw_spin_locked(&desc->lock);

	/*
         * If there was a valid mask to work with, please
         * do the disable, re-program, enable sequence.
         * This is *not* particularly important for level triggered
         * but in a edge trigger case, we might be setting rte
         * when an active trigger is coming in. This could
         * cause some ioapics to mal-function.
         * Being paranoid i guess!
         *
         * For correct operation this depends on the caller
         * masking the irqs.
         */
	if (cpumask_any_and(desc->pending_mask, cpu_online_mask) < nr_cpu_ids)
		irq_do_set_affinity(&desc->irq_data, desc->pending_mask, false);

	cpumask_clear(desc->pending_mask);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
thomas gleixner
thomas gleixner
41
29.93%
6
31.58%
andrew morton
andrew morton
37
27.01%
1
5.26%
bryan holty
bryan holty
21
15.33%
1
5.26%
yinghai lu
yinghai lu
12
8.76%
2
10.53%
rusty russell
rusty russell
11
8.03%
1
5.26%
eric w. biederman
eric w. biederman
5
3.65%
1
5.26%
ingo molnar
ingo molnar
4
2.92%
3
15.79%
jiang liu
jiang liu
4
2.92%
2
10.53%
lucas de marchi
lucas de marchi
1
0.73%
1
5.26%
daniel walker
daniel walker
1
0.73%
1
5.26%
Total
137
100.00%
19
100.00%



void irq_move_irq(struct irq_data *idata)
{
	bool masked;

	/*
         * Get top level irq_data when CONFIG_IRQ_DOMAIN_HIERARCHY is enabled,
         * and it should be optimized away when CONFIG_IRQ_DOMAIN_HIERARCHY is
         * disabled. So we avoid an "#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY" here.
         */
	idata = irq_desc_get_irq_data(irq_data_to_desc(idata));

	if (likely(!irqd_is_setaffinity_pending(idata)))
		return;

	if (unlikely(irqd_irq_disabled(idata)))
		return;

	/*
         * Be careful vs. already masked interrupts. If this is a
         * threaded interrupt with ONESHOT set, we can end up with an
         * interrupt storm.
         */
	masked = irqd_irq_masked(idata);
	if (!masked)
		idata->chip->irq_mask(idata);
	irq_move_masked_irq(idata);
	if (!masked)
		idata->chip->irq_unmask(idata);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
thomas gleixner
thomas gleixner
49
55.68%
6
50.00%
andrew morton
andrew morton
11
12.50%
1
8.33%
jiang liu
jiang liu
11
12.50%
1
8.33%
eric w. biederman
eric w. biederman
10
11.36%
2
16.67%
bryan holty
bryan holty
5
5.68%
1
8.33%
ingo molnar
ingo molnar
2
2.27%
1
8.33%
Total
88
100.00%
12
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
thomas gleixner
thomas gleixner
90
38.46%
10
41.67%
andrew morton
andrew morton
51
21.79%
1
4.17%
bryan holty
bryan holty
26
11.11%
1
4.17%
yinghai lu
yinghai lu
18
7.69%
2
8.33%
eric w. biederman
eric w. biederman
15
6.41%
2
8.33%
jiang liu
jiang liu
15
6.41%
2
8.33%
rusty russell
rusty russell
11
4.70%
1
4.17%
ingo molnar
ingo molnar
6
2.56%
3
12.50%
daniel walker
daniel walker
1
0.43%
1
4.17%
lucas de marchi
lucas de marchi
1
0.43%
1
4.17%
Total
234
100.00%
24
100.00%
  
Directory: kernel/irq

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.