drivers/infiniband/core/mr_pool.c

Source file repositories/reference/linux-study-clean/drivers/infiniband/core/mr_pool.c

File Facts

System
Linux kernel
Corpus path
drivers/infiniband/core/mr_pool.c
Extension
.c
Size
1928 bytes
Lines
83
Domain
Driver Families
Bucket
drivers/infiniband
Inferred role
Driver Families: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (IS_ERR(mr)) {
			ret = PTR_ERR(mr);
			goto out;
		}

		spin_lock_irqsave(&qp->mr_lock, flags);
		list_add_tail(&mr->qp_entry, list);
		spin_unlock_irqrestore(&qp->mr_lock, flags);
	}

	return 0;
out:
	ib_mr_pool_destroy(qp, list);
	return ret;
}
EXPORT_SYMBOL(ib_mr_pool_init);

void ib_mr_pool_destroy(struct ib_qp *qp, struct list_head *list)
{
	struct ib_mr *mr;
	unsigned long flags;

	spin_lock_irqsave(&qp->mr_lock, flags);
	while (!list_empty(list)) {
		mr = list_first_entry(list, struct ib_mr, qp_entry);
		list_del(&mr->qp_entry);

		spin_unlock_irqrestore(&qp->mr_lock, flags);
		ib_dereg_mr(mr);
		spin_lock_irqsave(&qp->mr_lock, flags);
	}
	spin_unlock_irqrestore(&qp->mr_lock, flags);
}
EXPORT_SYMBOL(ib_mr_pool_destroy);

Annotation

Implementation Notes