Commit be5d740b authored by Mike Marciniszyn's avatar Mike Marciniszyn Committed by Doug Ledford
Browse files

IB/rdmvat: Organize hot path calldowns into a single cacheline 



Save a cacheline by having hot path calldowns together.

Reviewed-by: default avatarSebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: default avatarMike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 99f80d2f

include/rdma/rdma_vt.h

+24 −22
Original line number Diff line number Diff line
@@ -185,6 +185,27 @@ struct rvt_driver_provided { 
	 * check_support() for details.

	 */



	/* hot path calldowns in a single cacheline */



	/*

	 * Give the driver a notice that there is send work to do. It is up to

	 * the driver to generally push the packets out, this just queues the

	 * work with the driver. There are two variants here. The no_lock

	 * version requires the s_lock not to be held. The other assumes the

	 * s_lock is held.

	 */

	void (*schedule_send)(struct rvt_qp *qp);

	void (*schedule_send_no_lock)(struct rvt_qp *qp);



	/* Driver specific work request checking */

	int (*check_send_wqe)(struct rvt_qp *qp, struct rvt_swqe *wqe);



	/*

	 * Sometimes rdmavt needs to kick the driver's send progress. That is

	 * done by this call back.

	 */

	void (*do_send)(struct rvt_qp *qp);



	/* Passed to ib core registration. Callback to create syfs files */

	int (*port_callback)(struct ib_device *, u8, struct kobject *);
@@ -222,22 +243,6 @@ struct rvt_driver_provided { 
	 */

	void (*notify_qp_reset)(struct rvt_qp *qp);



	/*

	 * Give the driver a notice that there is send work to do. It is up to

	 * the driver to generally push the packets out, this just queues the

	 * work with the driver. There are two variants here. The no_lock

	 * version requires the s_lock not to be held. The other assumes the

	 * s_lock is held.

	 */

	void (*schedule_send)(struct rvt_qp *qp);

	void (*schedule_send_no_lock)(struct rvt_qp *qp);



	/*

	 * Sometimes rdmavt needs to kick the driver's send progress. That is

	 * done by this call back.

	 */

	void (*do_send)(struct rvt_qp *qp);



	/*

	 * Get a path mtu from the driver based on qp attributes.

	 */
@@ -324,9 +329,6 @@ struct rvt_driver_provided { 
	void (*modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr,

			  int attr_mask, struct ib_udata *udata);



	/* Driver specific work request checking */

	int (*check_send_wqe)(struct rvt_qp *qp, struct rvt_swqe *wqe);



	/* Notify driver a mad agent has been created */

	void (*notify_create_mad_agent)(struct rvt_dev_info *rdi, int port_idx);
@@ -355,12 +357,12 @@ struct rvt_dev_info { 
	/* post send table */

	const struct rvt_operation_params *post_parms;



	struct rvt_mregion __rcu *dma_mr;

	struct rvt_lkey_table lkey_table;



	/* Driver specific helper functions */

	struct rvt_driver_provided driver_f;



	struct rvt_mregion __rcu *dma_mr;

	struct rvt_lkey_table lkey_table;



	/* Internal use */

	int n_pds_allocated;

	spinlock_t n_pds_lock; /* Protect pd allocated count */