Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "This has been a smaller cycle than normal. One new driver was
  accepted, which is unusual, and at least one more driver remains in
  review on the list.

  Summary:

   - Driver fixes for hns, hfi1, nes, rxe, i40iw, mlx5, cxgb4,
     vmw_pvrdma

   - Many patches from MatthewW converting radix tree and IDR users to
     use xarray

   - Introduction of tracepoints to the MAD layer

   - Build large SGLs at the start for DMA mapping and get the driver to
     split them

   - Generally clean SGL handling code throughout the subsystem

   - Support for restricting RDMA devices to net namespaces for
     containers

   - Progress to remove object allocation boilerplate code from drivers

   - Change in how the mlx5 driver shows representor ports linked to VFs

   - mlx5 uapi feature to access the on chip SW ICM memory

   - Add a new driver for 'EFA'. This is HW that supports user space
     packet processing through QPs in Amazon's cloud"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (186 commits)
  RDMA/ipoib: Allow user space differentiate between valid dev_port
  IB/core, ipoib: Do not overreact to SM LID change event
  RDMA/device: Don't fire uevent before device is fully initialized
  lib/scatterlist: Remove leftover from sg_page_iter comment
  RDMA/efa: Add driver to Kconfig/Makefile
  RDMA/efa: Add the efa module
  RDMA/efa: Add EFA verbs implementation
  RDMA/efa: Add common command handlers
  RDMA/efa: Implement functions that submit and complete admin commands
  RDMA/efa: Add the ABI definitions
  RDMA/efa: Add the com service API definitions
  RDMA/efa: Add the efa_com.h file
  RDMA/efa: Add the efa.h header file
  RDMA/efa: Add EFA device definitions
  RDMA: Add EFA related definitions
  RDMA/umem: Remove hugetlb flag
  RDMA/bnxt_re: Use core helpers to get aligned DMA address
  RDMA/i40iw: Use core helpers to get aligned DMA address within a supported page size
  RDMA/verbs: Add a DMA iterator to return aligned contiguous memory blocks
  RDMA/umem: Add API to find best driver supported page size in an MR
  ...

1 files changed, 8 insertions, 12 deletions

diff --git a/drivers/infiniband/hw/qib/qib_driver.c b/drivers/infiniband/hw/qib/qib_driver.c
index 3117cc5f2a9a..92eeea5679e2 100644
--- a/drivers/infiniband/hw/qib/qib_driver.c
+++ b/drivers/infiniband/hw/qib/qib_driver.c
@@ -49,8 +49,6 @@
  */
 const char ib_qib_version[] = QIB_DRIVER_VERSION "\n";
 
-DEFINE_SPINLOCK(qib_devs_lock);
-LIST_HEAD(qib_dev_list);
 DEFINE_MUTEX(qib_mutex);	/* general driver use */
 
 unsigned qib_ibmtu;
@@ -96,11 +94,11 @@ int qib_count_active_units(void)
 {
 	struct qib_devdata *dd;
 	struct qib_pportdata *ppd;
-	unsigned long flags;
+	unsigned long index, flags;
 	int pidx, nunits_active = 0;
 
-	spin_lock_irqsave(&qib_devs_lock, flags);
-	list_for_each_entry(dd, &qib_dev_list, list) {
+	xa_lock_irqsave(&qib_dev_table, flags);
+	xa_for_each(&qib_dev_table, index, dd) {
 		if (!(dd->flags & QIB_PRESENT) || !dd->kregbase)
 			continue;
 		for (pidx = 0; pidx < dd->num_pports; ++pidx) {
@@ -112,7 +110,7 @@ int qib_count_active_units(void)
 			}
 		}
 	}
-	spin_unlock_irqrestore(&qib_devs_lock, flags);
+	xa_unlock_irqrestore(&qib_dev_table, flags);
 	return nunits_active;
 }
 
@@ -125,13 +123,12 @@ int qib_count_units(int *npresentp, int *nupp)
 {
 	int nunits = 0, npresent = 0, nup = 0;
 	struct qib_devdata *dd;
-	unsigned long flags;
+	unsigned long index, flags;
 	int pidx;
 	struct qib_pportdata *ppd;
 
-	spin_lock_irqsave(&qib_devs_lock, flags);
-
-	list_for_each_entry(dd, &qib_dev_list, list) {
+	xa_lock_irqsave(&qib_dev_table, flags);
+	xa_for_each(&qib_dev_table, index, dd) {
 		nunits++;
 		if ((dd->flags & QIB_PRESENT) && dd->kregbase)
 			npresent++;
@@ -142,8 +139,7 @@ int qib_count_units(int *npresentp, int *nupp)
 				nup++;
 		}
 	}
-
-	spin_unlock_irqrestore(&qib_devs_lock, flags);
+	xa_unlock_irqrestore(&qib_dev_table, flags);
 
 	if (npresentp)
 		*npresentp = npresent;