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Revision 4c3de7e5bfbeb0ac1f702d1903ef69ad3a7f590c authored by Linus Torvalds on 25 March 2017, 22:13:55 UTC, committed by Linus Torvalds on 25 March 2017, 22:13:55 UTC 
Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit
 
Pull audit fix from Paul Moore:
 "We've got an audit fix, and unfortunately it is big.

  While I'm not excited that we need to be sending you something this
  large during the -rcX phase, it does fix some very real, and very
  tangled, problems relating to locking, backlog queues, and the audit
  daemon connection.

  This code has passed our testsuite without problem and it has held up
  to my ad-hoc stress tests (arguably better than the existing code),
  please consider pulling this as fix for the next v4.11-rcX tag"

* 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit:
  audit: fix auditd/kernel connection state tracking
2 parent s 424b689 + 5b52330
Raw File
blk-mq-pci.c 
/*
 * Copyright (c) 2016 Christoph Hellwig.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 */
#include <linux/kobject.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
#include <linux/blk-mq-pci.h>
#include <linux/pci.h>
#include <linux/module.h>

/**
 * blk_mq_pci_map_queues - provide a default queue mapping for PCI device
 * @set:	tagset to provide the mapping for
 * @pdev:	PCI device associated with @set.
 *
 * This function assumes the PCI device @pdev has at least as many available
 * interrupt vetors as @set has queues.  It will then queuery the vector
 * corresponding to each queue for it's affinity mask and built queue mapping
 * that maps a queue to the CPUs that have irq affinity for the corresponding
 * vector.
 */
int blk_mq_pci_map_queues(struct blk_mq_tag_set *set, struct pci_dev *pdev)
{
	const struct cpumask *mask;
	unsigned int queue, cpu;

	for (queue = 0; queue < set->nr_hw_queues; queue++) {
		mask = pci_irq_get_affinity(pdev, queue);
		if (!mask)
			return -EINVAL;

		for_each_cpu(cpu, mask)
			set->mq_map[cpu] = queue;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(blk_mq_pci_map_queues);
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