static unsigned int cmd_sg_entries;
static unsigned int indirect_sg_entries;
static bool allow_ext_sg;
+static bool prefer_fr;
static bool register_always;
static int topspin_workarounds = 1;
MODULE_PARM_DESC(topspin_workarounds,
"Enable workarounds for Topspin/Cisco SRP target bugs if != 0");
+module_param(prefer_fr, bool, 0444);
+MODULE_PARM_DESC(prefer_fr,
+"Whether to use fast registration if both FMR and fast registration are supported");
+
module_param(register_always, bool, 0444);
MODULE_PARM_DESC(register_always,
"Use memory registration even for contiguous memory regions");
return ib_create_fmr_pool(dev->pd, &fmr_param);
}
+/**
+ * srp_destroy_fr_pool() - free the resources owned by a pool
+ * @pool: Fast registration pool to be destroyed.
+ */
+static void srp_destroy_fr_pool(struct srp_fr_pool *pool)
+{
+ int i;
+ struct srp_fr_desc *d;
+
+ if (!pool)
+ return;
+
+ for (i = 0, d = &pool->desc[0]; i < pool->size; i++, d++) {
+ if (d->frpl)
+ ib_free_fast_reg_page_list(d->frpl);
+ if (d->mr)
+ ib_dereg_mr(d->mr);
+ }
+ kfree(pool);
+}
+
+/**
+ * srp_create_fr_pool() - allocate and initialize a pool for fast registration
+ * @device: IB device to allocate fast registration descriptors for.
+ * @pd: Protection domain associated with the FR descriptors.
+ * @pool_size: Number of descriptors to allocate.
+ * @max_page_list_len: Maximum fast registration work request page list length.
+ */
+static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device,
+ struct ib_pd *pd, int pool_size,
+ int max_page_list_len)
+{
+ struct srp_fr_pool *pool;
+ struct srp_fr_desc *d;
+ struct ib_mr *mr;
+ struct ib_fast_reg_page_list *frpl;
+ int i, ret = -EINVAL;
+
+ if (pool_size <= 0)
+ goto err;
+ ret = -ENOMEM;
+ pool = kzalloc(sizeof(struct srp_fr_pool) +
+ pool_size * sizeof(struct srp_fr_desc), GFP_KERNEL);
+ if (!pool)
+ goto err;
+ pool->size = pool_size;
+ pool->max_page_list_len = max_page_list_len;
+ spin_lock_init(&pool->lock);
+ INIT_LIST_HEAD(&pool->free_list);
+
+ for (i = 0, d = &pool->desc[0]; i < pool->size; i++, d++) {
+ mr = ib_alloc_fast_reg_mr(pd, max_page_list_len);
+ if (IS_ERR(mr)) {
+ ret = PTR_ERR(mr);
+ goto destroy_pool;
+ }
+ d->mr = mr;
+ frpl = ib_alloc_fast_reg_page_list(device, max_page_list_len);
+ if (IS_ERR(frpl)) {
+ ret = PTR_ERR(frpl);
+ goto destroy_pool;
+ }
+ d->frpl = frpl;
+ list_add_tail(&d->entry, &pool->free_list);
+ }
+
+out:
+ return pool;
+
+destroy_pool:
+ srp_destroy_fr_pool(pool);
+
+err:
+ pool = ERR_PTR(ret);
+ goto out;
+}
+
+/**
+ * srp_fr_pool_get() - obtain a descriptor suitable for fast registration
+ * @pool: Pool to obtain descriptor from.
+ */
+static struct srp_fr_desc *srp_fr_pool_get(struct srp_fr_pool *pool)
+{
+ struct srp_fr_desc *d = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pool->lock, flags);
+ if (!list_empty(&pool->free_list)) {
+ d = list_first_entry(&pool->free_list, typeof(*d), entry);
+ list_del(&d->entry);
+ }
+ spin_unlock_irqrestore(&pool->lock, flags);
+
+ return d;
+}
+
+/**
+ * srp_fr_pool_put() - put an FR descriptor back in the free list
+ * @pool: Pool the descriptor was allocated from.
+ * @desc: Pointer to an array of fast registration descriptor pointers.
+ * @n: Number of descriptors to put back.
+ *
+ * Note: The caller must already have queued an invalidation request for
+ * desc->mr->rkey before calling this function.
+ */
+static void srp_fr_pool_put(struct srp_fr_pool *pool, struct srp_fr_desc **desc,
+ int n)
+{
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&pool->lock, flags);
+ for (i = 0; i < n; i++)
+ list_add(&desc[i]->entry, &pool->free_list);
+ spin_unlock_irqrestore(&pool->lock, flags);
+}
+
+static struct srp_fr_pool *srp_alloc_fr_pool(struct srp_target_port *target)
+{
+ struct srp_device *dev = target->srp_host->srp_dev;
+
+ return srp_create_fr_pool(dev->dev, dev->pd,
+ target->scsi_host->can_queue,
+ dev->max_pages_per_mr);
+}
+
static int srp_create_target_ib(struct srp_target_port *target)
{
struct srp_device *dev = target->srp_host->srp_dev;
struct ib_cq *recv_cq, *send_cq;
struct ib_qp *qp;
struct ib_fmr_pool *fmr_pool = NULL;
+ struct srp_fr_pool *fr_pool = NULL;
+ const int m = 1 + dev->use_fast_reg;
int ret;
init_attr = kzalloc(sizeof *init_attr, GFP_KERNEL);
}
send_cq = ib_create_cq(dev->dev, srp_send_completion, NULL, target,
- target->queue_size, target->comp_vector);
+ m * target->queue_size, target->comp_vector);
if (IS_ERR(send_cq)) {
ret = PTR_ERR(send_cq);
goto err_recv_cq;
ib_req_notify_cq(recv_cq, IB_CQ_NEXT_COMP);
init_attr->event_handler = srp_qp_event;
- init_attr->cap.max_send_wr = target->queue_size;
+ init_attr->cap.max_send_wr = m * target->queue_size;
init_attr->cap.max_recv_wr = target->queue_size;
init_attr->cap.max_recv_sge = 1;
init_attr->cap.max_send_sge = 1;
- init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
+ init_attr->sq_sig_type = IB_SIGNAL_REQ_WR;
init_attr->qp_type = IB_QPT_RC;
init_attr->send_cq = send_cq;
init_attr->recv_cq = recv_cq;
if (ret)
goto err_qp;
- if (dev->has_fmr) {
+ if (dev->use_fast_reg && dev->has_fr) {
+ fr_pool = srp_alloc_fr_pool(target);
+ if (IS_ERR(fr_pool)) {
+ ret = PTR_ERR(fr_pool);
+ shost_printk(KERN_WARNING, target->scsi_host, PFX
+ "FR pool allocation failed (%d)\n", ret);
+ goto err_qp;
+ }
+ if (target->fr_pool)
+ srp_destroy_fr_pool(target->fr_pool);
+ target->fr_pool = fr_pool;
+ } else if (!dev->use_fast_reg && dev->has_fmr) {
fmr_pool = srp_alloc_fmr_pool(target);
if (IS_ERR(fmr_pool)) {
ret = PTR_ERR(fmr_pool);
*/
static void srp_free_target_ib(struct srp_target_port *target)
{
+ struct srp_device *dev = target->srp_host->srp_dev;
int i;
- if (target->fmr_pool)
- ib_destroy_fmr_pool(target->fmr_pool);
+ if (dev->use_fast_reg) {
+ if (target->fr_pool)
+ srp_destroy_fr_pool(target->fr_pool);
+ } else {
+ if (target->fmr_pool)
+ ib_destroy_fmr_pool(target->fmr_pool);
+ }
ib_destroy_qp(target->qp);
ib_destroy_cq(target->send_cq);
ib_destroy_cq(target->recv_cq);
static void srp_free_req_data(struct srp_target_port *target)
{
- struct ib_device *ibdev = target->srp_host->srp_dev->dev;
+ struct srp_device *dev = target->srp_host->srp_dev;
+ struct ib_device *ibdev = dev->dev;
struct srp_request *req;
int i;
for (i = 0; i < target->req_ring_size; ++i) {
req = &target->req_ring[i];
- kfree(req->fmr_list);
+ if (dev->use_fast_reg)
+ kfree(req->fr_list);
+ else
+ kfree(req->fmr_list);
kfree(req->map_page);
if (req->indirect_dma_addr) {
ib_dma_unmap_single(ibdev, req->indirect_dma_addr,
struct srp_device *srp_dev = target->srp_host->srp_dev;
struct ib_device *ibdev = srp_dev->dev;
struct srp_request *req;
+ void *mr_list;
dma_addr_t dma_addr;
int i, ret = -ENOMEM;
for (i = 0; i < target->req_ring_size; ++i) {
req = &target->req_ring[i];
- req->fmr_list = kmalloc(target->cmd_sg_cnt * sizeof(void *),
- GFP_KERNEL);
+ mr_list = kmalloc(target->cmd_sg_cnt * sizeof(void *),
+ GFP_KERNEL);
+ if (!mr_list)
+ goto out;
+ if (srp_dev->use_fast_reg)
+ req->fr_list = mr_list;
+ else
+ req->fmr_list = mr_list;
req->map_page = kmalloc(srp_dev->max_pages_per_mr *
sizeof(void *), GFP_KERNEL);
+ if (!req->map_page)
+ goto out;
req->indirect_desc = kmalloc(target->indirect_size, GFP_KERNEL);
- if (!req->fmr_list || !req->map_page || !req->indirect_desc)
+ if (!req->indirect_desc)
goto out;
dma_addr = ib_dma_map_single(ibdev, req->indirect_desc,
}
}
+static int srp_inv_rkey(struct srp_target_port *target, u32 rkey)
+{
+ struct ib_send_wr *bad_wr;
+ struct ib_send_wr wr = {
+ .opcode = IB_WR_LOCAL_INV,
+ .wr_id = LOCAL_INV_WR_ID_MASK,
+ .next = NULL,
+ .num_sge = 0,
+ .send_flags = 0,
+ .ex.invalidate_rkey = rkey,
+ };
+
+ return ib_post_send(target->qp, &wr, &bad_wr);
+}
+
static void srp_unmap_data(struct scsi_cmnd *scmnd,
struct srp_target_port *target,
struct srp_request *req)
{
- struct ib_device *ibdev = target->srp_host->srp_dev->dev;
- struct ib_pool_fmr **pfmr;
+ struct srp_device *dev = target->srp_host->srp_dev;
+ struct ib_device *ibdev = dev->dev;
+ int i, res;
if (!scsi_sglist(scmnd) ||
(scmnd->sc_data_direction != DMA_TO_DEVICE &&
scmnd->sc_data_direction != DMA_FROM_DEVICE))
return;
- pfmr = req->fmr_list;
- while (req->nmdesc--)
- ib_fmr_pool_unmap(*pfmr++);
+ if (dev->use_fast_reg) {
+ struct srp_fr_desc **pfr;
+
+ for (i = req->nmdesc, pfr = req->fr_list; i > 0; i--, pfr++) {
+ res = srp_inv_rkey(target, (*pfr)->mr->rkey);
+ if (res < 0) {
+ shost_printk(KERN_ERR, target->scsi_host, PFX
+ "Queueing INV WR for rkey %#x failed (%d)\n",
+ (*pfr)->mr->rkey, res);
+ queue_work(system_long_wq,
+ &target->tl_err_work);
+ }
+ }
+ if (req->nmdesc)
+ srp_fr_pool_put(target->fr_pool, req->fr_list,
+ req->nmdesc);
+ } else {
+ struct ib_pool_fmr **pfmr;
+
+ for (i = req->nmdesc, pfmr = req->fmr_list; i > 0; i--, pfmr++)
+ ib_fmr_pool_unmap(*pfmr);
+ }
ib_dma_unmap_sg(ibdev, scsi_sglist(scmnd), scsi_sg_count(scmnd),
scmnd->sc_data_direction);
* callbacks will have finished before a new QP is allocated.
*/
ret = srp_new_cm_id(target);
- /*
- * Whether or not creating a new CM ID succeeded, create a new
- * QP. This guarantees that all completion callback function
- * invocations have finished before request resetting starts.
- */
- if (ret == 0)
- ret = srp_create_target_ib(target);
- else
- srp_create_target_ib(target);
for (i = 0; i < target->req_ring_size; ++i) {
struct srp_request *req = &target->req_ring[i];
srp_finish_req(target, req, NULL, DID_RESET << 16);
}
+ /*
+ * Whether or not creating a new CM ID succeeded, create a new
+ * QP. This guarantees that all callback functions for the old QP have
+ * finished before any send requests are posted on the new QP.
+ */
+ ret += srp_create_target_ib(target);
+
INIT_LIST_HEAD(&target->free_tx);
for (i = 0; i < target->queue_size; ++i)
list_add(&target->tx_ring[i]->list, &target->free_tx);
return 0;
}
+static int srp_map_finish_fr(struct srp_map_state *state,
+ struct srp_target_port *target)
+{
+ struct srp_device *dev = target->srp_host->srp_dev;
+ struct ib_send_wr *bad_wr;
+ struct ib_send_wr wr;
+ struct srp_fr_desc *desc;
+ u32 rkey;
+
+ desc = srp_fr_pool_get(target->fr_pool);
+ if (!desc)
+ return -ENOMEM;
+
+ rkey = ib_inc_rkey(desc->mr->rkey);
+ ib_update_fast_reg_key(desc->mr, rkey);
+
+ memcpy(desc->frpl->page_list, state->pages,
+ sizeof(state->pages[0]) * state->npages);
+
+ memset(&wr, 0, sizeof(wr));
+ wr.opcode = IB_WR_FAST_REG_MR;
+ wr.wr_id = FAST_REG_WR_ID_MASK;
+ wr.wr.fast_reg.iova_start = state->base_dma_addr;
+ wr.wr.fast_reg.page_list = desc->frpl;
+ wr.wr.fast_reg.page_list_len = state->npages;
+ wr.wr.fast_reg.page_shift = ilog2(dev->mr_page_size);
+ wr.wr.fast_reg.length = state->dma_len;
+ wr.wr.fast_reg.access_flags = (IB_ACCESS_LOCAL_WRITE |
+ IB_ACCESS_REMOTE_READ |
+ IB_ACCESS_REMOTE_WRITE);
+ wr.wr.fast_reg.rkey = desc->mr->lkey;
+
+ *state->next_fr++ = desc;
+ state->nmdesc++;
+
+ srp_map_desc(state, state->base_dma_addr, state->dma_len,
+ desc->mr->rkey);
+
+ return ib_post_send(target->qp, &wr, &bad_wr);
+}
+
static int srp_finish_mapping(struct srp_map_state *state,
struct srp_target_port *target)
{
srp_map_desc(state, state->base_dma_addr, state->dma_len,
target->rkey);
else
- ret = srp_map_finish_fmr(state, target);
+ ret = target->srp_host->srp_dev->use_fast_reg ?
+ srp_map_finish_fr(state, target) :
+ srp_map_finish_fmr(state, target);
if (ret == 0) {
state->npages = 0;
static int srp_map_sg_entry(struct srp_map_state *state,
struct srp_target_port *target,
struct scatterlist *sg, int sg_index,
- int use_fmr)
+ bool use_mr)
{
struct srp_device *dev = target->srp_host->srp_dev;
struct ib_device *ibdev = dev->dev;
if (!dma_len)
return 0;
- if (use_fmr == SRP_MAP_NO_FMR) {
- /* Once we're in direct map mode for a request, we don't
- * go back to FMR mode, so no need to update anything
+ if (!use_mr) {
+ /*
+ * Once we're in direct map mode for a request, we don't
+ * go back to FMR or FR mode, so no need to update anything
* other than the descriptor.
*/
srp_map_desc(state, dma_addr, dma_len, target->rkey);
return 0;
}
- /* If we start at an offset into the FMR page, don't merge into
- * the current FMR. Finish it out, and use the kernel's MR for this
- * sg entry. This is to avoid potential bugs on some SRP targets
- * that were never quite defined, but went away when the initiator
- * avoided using FMR on such page fragments.
+ /*
+ * Since not all RDMA HW drivers support non-zero page offsets for
+ * FMR, if we start at an offset into a page, don't merge into the
+ * current FMR mapping. Finish it out, and use the kernel's MR for
+ * this sg entry.
*/
- if (dma_addr & ~dev->mr_page_mask || dma_len > dev->mr_max_size) {
+ if ((!dev->use_fast_reg && dma_addr & ~dev->mr_page_mask) ||
+ dma_len > dev->mr_max_size) {
ret = srp_finish_mapping(state, target);
if (ret)
return ret;
return 0;
}
- /* If this is the first sg to go into the FMR, save our position.
- * We need to know the first unmapped entry, its index, and the
- * first unmapped address within that entry to be able to restart
- * mapping after an error.
+ /*
+ * If this is the first sg that will be mapped via FMR or via FR, save
+ * our position. We need to know the first unmapped entry, its index,
+ * and the first unmapped address within that entry to be able to
+ * restart mapping after an error.
*/
if (!state->unmapped_sg)
srp_map_update_start(state, sg, sg_index, dma_addr);
while (dma_len) {
- if (state->npages == dev->max_pages_per_mr) {
+ unsigned offset = dma_addr & ~dev->mr_page_mask;
+ if (state->npages == dev->max_pages_per_mr || offset != 0) {
ret = srp_finish_mapping(state, target);
if (ret)
return ret;
srp_map_update_start(state, sg, sg_index, dma_addr);
}
- len = min_t(unsigned int, dma_len, dev->mr_page_size);
+ len = min_t(unsigned int, dma_len, dev->mr_page_size - offset);
if (!state->npages)
state->base_dma_addr = dma_addr;
- state->pages[state->npages++] = dma_addr;
+ state->pages[state->npages++] = dma_addr & dev->mr_page_mask;
state->dma_len += len;
dma_addr += len;
dma_len -= len;
}
- /* If the last entry of the FMR wasn't a full page, then we need to
+ /*
+ * If the last entry of the MR wasn't a full page, then we need to
* close it out and start a new one -- we can only merge at page
* boundries.
*/
return ret;
}
-static void srp_map_fmr(struct srp_map_state *state,
- struct srp_target_port *target, struct srp_request *req,
- struct scatterlist *scat, int count)
+static int srp_map_sg(struct srp_map_state *state,
+ struct srp_target_port *target, struct srp_request *req,
+ struct scatterlist *scat, int count)
{
struct srp_device *dev = target->srp_host->srp_dev;
struct ib_device *ibdev = dev->dev;
struct scatterlist *sg;
- int i, use_fmr;
+ int i;
+ bool use_mr;
state->desc = req->indirect_desc;
state->pages = req->map_page;
- state->next_fmr = req->fmr_list;
-
- use_fmr = target->fmr_pool ? SRP_MAP_ALLOW_FMR : SRP_MAP_NO_FMR;
+ if (dev->use_fast_reg) {
+ state->next_fr = req->fr_list;
+ use_mr = !!target->fr_pool;
+ } else {
+ state->next_fmr = req->fmr_list;
+ use_mr = !!target->fmr_pool;
+ }
for_each_sg(scat, sg, count, i) {
- if (srp_map_sg_entry(state, target, sg, i, use_fmr)) {
- /* FMR mapping failed, so backtrack to the first
- * unmapped entry and continue on without using FMR.
+ if (srp_map_sg_entry(state, target, sg, i, use_mr)) {
+ /*
+ * Memory registration failed, so backtrack to the
+ * first unmapped entry and continue on without using
+ * memory registration.
*/
dma_addr_t dma_addr;
unsigned int dma_len;
dma_len = ib_sg_dma_len(ibdev, sg);
dma_len -= (state->unmapped_addr - dma_addr);
dma_addr = state->unmapped_addr;
- use_fmr = SRP_MAP_NO_FMR;
+ use_mr = false;
srp_map_desc(state, dma_addr, dma_len, target->rkey);
}
}
- if (use_fmr == SRP_MAP_ALLOW_FMR && srp_finish_mapping(state, target))
+ if (use_mr && srp_finish_mapping(state, target))
goto backtrack;
req->nmdesc = state->nmdesc;
+
+ return 0;
}
static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_target_port *target,
goto map_complete;
}
- /* We have more than one scatter/gather entry, so build our indirect
- * descriptor table, trying to merge as many entries with FMR as we
- * can.
+ /*
+ * We have more than one scatter/gather entry, so build our indirect
+ * descriptor table, trying to merge as many entries as we can.
*/
indirect_hdr = (void *) cmd->add_data;
target->indirect_size, DMA_TO_DEVICE);
memset(&state, 0, sizeof(state));
- srp_map_fmr(&state, target, req, scat, count);
+ srp_map_sg(&state, target, req, scat, count);
/* We've mapped the request, now pull as much of the indirect
* descriptor table as we can into the command buffer. If this
* give us more S/G entries than we allow.
*/
if (state.ndesc == 1) {
- /* FMR mapping was able to collapse this to one entry,
+ /*
+ * Memory registration collapsed the sg-list into one entry,
* so use a direct descriptor.
*/
struct srp_direct_buf *buf = (void *) cmd->add_data;
srp_start_tl_fail_timers(target->rport);
}
-static void srp_handle_qp_err(enum ib_wc_status wc_status, bool send_err,
- struct srp_target_port *target)
+static void srp_handle_qp_err(u64 wr_id, enum ib_wc_status wc_status,
+ bool send_err, struct srp_target_port *target)
{
if (target->connected && !target->qp_in_error) {
- shost_printk(KERN_ERR, target->scsi_host,
- PFX "failed %s status %d\n",
- send_err ? "send" : "receive",
- wc_status);
+ if (wr_id & LOCAL_INV_WR_ID_MASK) {
+ shost_printk(KERN_ERR, target->scsi_host, PFX
+ "LOCAL_INV failed with status %d\n",
+ wc_status);
+ } else if (wr_id & FAST_REG_WR_ID_MASK) {
+ shost_printk(KERN_ERR, target->scsi_host, PFX
+ "FAST_REG_MR failed status %d\n",
+ wc_status);
+ } else {
+ shost_printk(KERN_ERR, target->scsi_host,
+ PFX "failed %s status %d for iu %p\n",
+ send_err ? "send" : "receive",
+ wc_status, (void *)(uintptr_t)wr_id);
+ }
queue_work(system_long_wq, &target->tl_err_work);
}
target->qp_in_error = true;
if (likely(wc.status == IB_WC_SUCCESS)) {
srp_handle_recv(target, &wc);
} else {
- srp_handle_qp_err(wc.status, false, target);
+ srp_handle_qp_err(wc.wr_id, wc.status, false, target);
}
}
}
iu = (struct srp_iu *) (uintptr_t) wc.wr_id;
list_add(&iu->list, &target->free_tx);
} else {
- srp_handle_qp_err(wc.status, true, target);
+ srp_handle_qp_err(wc.wr_id, wc.status, true, target);
}
}
}
goto err;
}
- if (!srp_dev->has_fmr && !target->allow_ext_sg &&
+ if (!srp_dev->has_fmr && !srp_dev->has_fr && !target->allow_ext_sg &&
target->cmd_sg_cnt < target->sg_tablesize) {
- pr_warn("No FMR pool and no external indirect descriptors, limiting sg_tablesize to cmd_sg_cnt\n");
+ pr_warn("No MR pool and no external indirect descriptors, limiting sg_tablesize to cmd_sg_cnt\n");
target->sg_tablesize = target->cmd_sg_cnt;
}
srp_dev->has_fmr = (device->alloc_fmr && device->dealloc_fmr &&
device->map_phys_fmr && device->unmap_fmr);
+ srp_dev->has_fr = (dev_attr->device_cap_flags &
+ IB_DEVICE_MEM_MGT_EXTENSIONS);
+ if (!srp_dev->has_fmr && !srp_dev->has_fr)
+ dev_warn(&device->dev, "neither FMR nor FR is supported\n");
+
+ srp_dev->use_fast_reg = (srp_dev->has_fr &&
+ (!srp_dev->has_fmr || prefer_fr));
/*
* Use the smallest page size supported by the HCA, down to a
do_div(max_pages_per_mr, srp_dev->mr_page_size);
srp_dev->max_pages_per_mr = min_t(u64, SRP_MAX_PAGES_PER_MR,
max_pages_per_mr);
+ if (srp_dev->use_fast_reg) {
+ srp_dev->max_pages_per_mr =
+ min_t(u32, srp_dev->max_pages_per_mr,
+ dev_attr->max_fast_reg_page_list_len);
+ }
srp_dev->mr_max_size = srp_dev->mr_page_size *
srp_dev->max_pages_per_mr;
- pr_debug("%s: mr_page_shift = %d, dev_attr->max_mr_size = %#llx, max_pages_per_mr = %d, mr_max_size = %#x\n",
+ pr_debug("%s: mr_page_shift = %d, dev_attr->max_mr_size = %#llx, dev_attr->max_fast_reg_page_list_len = %u, max_pages_per_mr = %d, mr_max_size = %#x\n",
device->name, mr_page_shift, dev_attr->max_mr_size,
+ dev_attr->max_fast_reg_page_list_len,
srp_dev->max_pages_per_mr, srp_dev->mr_max_size);
INIT_LIST_HEAD(&srp_dev->dev_list);
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff