#include #include #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); } 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); } class='active' href='/cgit.cgi/linux/net-next.git/commit/include/net/9p/client.h?h=nds-private-remove&id=eeeefd41843218c55a8782a6920f044d9bf6207a'>commitdiff
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authorChristoph Hellwig <hch@lst.de>2017-02-05 18:10:35 +0100
committerJens Axboe <axboe@fb.com>2017-02-06 09:34:46 -0700
commiteeeefd41843218c55a8782a6920f044d9bf6207a (patch)
treec342eac46626e62745aa8e1a982626efca8b121d /include/net/9p/client.h
parentc14024dbb156c8392908aaa822097d27c6af8ec8 (diff)
block: don't try Write Same from __blkdev_issue_zeroout
Write Same can return an error asynchronously if it turns out the underlying SCSI device does not support Write Same, which makes a proper fallback to other methods in __blkdev_issue_zeroout impossible. Thus only issue a Write Same from blkdev_issue_zeroout an don't try it at all from __blkdev_issue_zeroout as a non-invasive workaround. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Fixes: e73c23ff ("block: add async variant of blkdev_issue_zeroout") Tested-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/net/9p/client.h')