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ioat2: clarify ring size limits
With the addition of ioat_max_alloc_order it is not clear what the maximum allocation order is, so document that in the modinfo. Also take an opportunity to kill a stray semicolon. Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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1 changed files with 4 additions and 3 deletions
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@ -42,18 +42,19 @@
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int ioat_ring_alloc_order = 8;
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module_param(ioat_ring_alloc_order, int, 0644);
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MODULE_PARM_DESC(ioat_ring_alloc_order,
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"ioat2+: allocate 2^n descriptors per channel (default: n=8)");
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"ioat2+: allocate 2^n descriptors per channel"
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" (default: 8 max: 16)");
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static int ioat_ring_max_alloc_order = IOAT_MAX_ORDER;
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module_param(ioat_ring_max_alloc_order, int, 0644);
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MODULE_PARM_DESC(ioat_ring_max_alloc_order,
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"ioat2+: upper limit for dynamic ring resizing (default: n=16)");
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"ioat2+: upper limit for ring size (default: 16)");
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void __ioat2_issue_pending(struct ioat2_dma_chan *ioat)
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{
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void * __iomem reg_base = ioat->base.reg_base;
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ioat->pending = 0;
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ioat->dmacount += ioat2_ring_pending(ioat);;
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ioat->dmacount += ioat2_ring_pending(ioat);
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ioat->issued = ioat->head;
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/* make descriptor updates globally visible before notifying channel */
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wmb();
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