From patchwork Fri May 16 13:49:50 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 4192711 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id AD5C9C0ACC for ; Fri, 16 May 2014 13:49:57 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A2C5D201FE for ; Fri, 16 May 2014 13:49:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E46720270 for ; Fri, 16 May 2014 13:49:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932675AbaEPNtw (ORCPT ); Fri, 16 May 2014 09:49:52 -0400 Received: from albert.telenet-ops.be ([195.130.137.90]:45517 "EHLO albert.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932627AbaEPNtv (ORCPT ); Fri, 16 May 2014 09:49:51 -0400 Received: from [192.168.1.117] ([178.119.65.67]) by albert.telenet-ops.be with bizsmtp id 2dpq1o00k1T3uRu06dpqYb; Fri, 16 May 2014 15:49:50 +0200 Message-ID: <5376177E.7040409@acm.org> Date: Fri, 16 May 2014 15:49:50 +0200 From: Bart Van Assche User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Roland Dreier CC: Sagi Grimberg , Vu Pham , Sebastian Parschauer , David Dillow , linux-rdma Subject: [PATCH v3 8/9] IB/srp: Rename FMR-related variables References: <53761628.8030701@acm.org> In-Reply-To: <53761628.8030701@acm.org> X-Enigmail-Version: 1.6 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The next patch will cause the renamed variables to be shared between the code for FMR and for FR memory registration. Make the names of these variables independent of the memory registration mode. This patch does not change any functionality. The start of this patch was the changes applied via the following shell command: sed -i.orig 's/SRP_FMR_SIZE/SRP_MAX_PAGES_PER_MR/g; \ s/fmr_page_mask/mr_page_mask/g;s/fmr_page_size/mr_page_size/g; \ s/fmr_page_shift/mr_page_shift/g;s/fmr_max_size/mr_max_size/g; \ s/max_pages_per_fmr/max_pages_per_mr/g;s/nfmr/nmdesc/g; \ s/fmr_len/dma_len/g' drivers/infiniband/ulp/srp/ib_srp.[ch] Signed-off-by: Bart Van Assche Cc: Roland Dreier Cc: David Dillow Cc: Sagi Grimberg Cc: Vu Pham Cc: Sebastian Parschauer --- drivers/infiniband/ulp/srp/ib_srp.c | 48 ++++++++++++++++++------------------- drivers/infiniband/ulp/srp/ib_srp.h | 16 ++++++------- 2 files changed, 32 insertions(+), 32 deletions(-) diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 72e3bf0..32ec11c 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -302,8 +302,8 @@ static struct ib_fmr_pool *srp_alloc_fmr_pool(struct srp_target_port *target) fmr_param.pool_size = target->scsi_host->can_queue; fmr_param.dirty_watermark = fmr_param.pool_size / 4; fmr_param.cache = 1; - fmr_param.max_pages_per_fmr = dev->max_pages_per_fmr; - fmr_param.page_shift = ilog2(dev->fmr_page_size); + fmr_param.max_pages_per_fmr = dev->max_pages_per_mr; + fmr_param.page_shift = ilog2(dev->mr_page_size); fmr_param.access = (IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ); @@ -659,7 +659,7 @@ static int srp_alloc_req_data(struct srp_target_port *target) req = &target->req_ring[i]; req->fmr_list = kmalloc(target->cmd_sg_cnt * sizeof(void *), GFP_KERNEL); - req->map_page = kmalloc(SRP_FMR_SIZE * sizeof(void *), + req->map_page = kmalloc(SRP_MAX_PAGES_PER_MR * sizeof(void *), GFP_KERNEL); req->indirect_desc = kmalloc(target->indirect_size, GFP_KERNEL); if (!req->fmr_list || !req->map_page || !req->indirect_desc) @@ -812,7 +812,7 @@ static void srp_unmap_data(struct scsi_cmnd *scmnd, return; pfmr = req->fmr_list; - while (req->nfmr--) + while (req->nmdesc--) ib_fmr_pool_unmap(*pfmr++); ib_dma_unmap_sg(ibdev, scsi_sglist(scmnd), scsi_sg_count(scmnd), @@ -981,9 +981,9 @@ static int srp_map_finish_fmr(struct srp_map_state *state, return PTR_ERR(fmr); *state->next_fmr++ = fmr; - state->nfmr++; + state->nmdesc++; - srp_map_desc(state, 0, state->fmr_len, fmr->fmr->rkey); + srp_map_desc(state, 0, state->dma_len, fmr->fmr->rkey); return 0; } @@ -997,14 +997,14 @@ static int srp_finish_mapping(struct srp_map_state *state, return 0; if (state->npages == 1 && !register_always) - srp_map_desc(state, state->base_dma_addr, state->fmr_len, + srp_map_desc(state, state->base_dma_addr, state->dma_len, target->rkey); else ret = srp_map_finish_fmr(state, target); if (ret == 0) { state->npages = 0; - state->fmr_len = 0; + state->dma_len = 0; } return ret; @@ -1049,7 +1049,7 @@ static int srp_map_sg_entry(struct srp_map_state *state, * that were never quite defined, but went away when the initiator * avoided using FMR on such page fragments. */ - if (dma_addr & ~dev->fmr_page_mask || dma_len > dev->fmr_max_size) { + if (dma_addr & ~dev->mr_page_mask || dma_len > dev->mr_max_size) { ret = srp_finish_mapping(state, target); if (ret) return ret; @@ -1068,7 +1068,7 @@ static int srp_map_sg_entry(struct srp_map_state *state, srp_map_update_start(state, sg, sg_index, dma_addr); while (dma_len) { - if (state->npages == SRP_FMR_SIZE) { + if (state->npages == SRP_MAX_PAGES_PER_MR) { ret = srp_finish_mapping(state, target); if (ret) return ret; @@ -1076,12 +1076,12 @@ static int srp_map_sg_entry(struct srp_map_state *state, srp_map_update_start(state, sg, sg_index, dma_addr); } - len = min_t(unsigned int, dma_len, dev->fmr_page_size); + len = min_t(unsigned int, dma_len, dev->mr_page_size); if (!state->npages) state->base_dma_addr = dma_addr; state->pages[state->npages++] = dma_addr; - state->fmr_len += len; + state->dma_len += len; dma_addr += len; dma_len -= len; } @@ -1091,7 +1091,7 @@ static int srp_map_sg_entry(struct srp_map_state *state, * boundries. */ ret = 0; - if (len != dev->fmr_page_size) { + if (len != dev->mr_page_size) { ret = srp_finish_mapping(state, target); if (!ret) srp_map_update_start(state, NULL, 0, 0); @@ -1138,7 +1138,7 @@ backtrack: if (use_fmr == SRP_MAP_ALLOW_FMR && srp_finish_mapping(state, target)) goto backtrack; - req->nfmr = state->nfmr; + req->nmdesc = state->nmdesc; } static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_target_port *target, @@ -1191,7 +1191,7 @@ static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_target_port *target, buf->key = cpu_to_be32(target->rkey); buf->len = cpu_to_be32(ib_sg_dma_len(ibdev, scat)); - req->nfmr = 0; + req->nmdesc = 0; goto map_complete; } @@ -1639,7 +1639,7 @@ static int srp_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd) /* * If we ran out of memory descriptors (-ENOMEM) because an * application is queuing many requests with more than - * max_pages_per_fmr sg-list elements, tell the SCSI mid-layer + * max_pages_per_mr sg-list elements, tell the SCSI mid-layer * to reduce queue depth temporarily. */ scmnd->result = len == -ENOMEM ? @@ -2879,7 +2879,7 @@ static void srp_add_one(struct ib_device *device) struct srp_device *srp_dev; struct ib_device_attr *dev_attr; struct srp_host *host; - int fmr_page_shift, s, e, p; + int mr_page_shift, s, e, p; dev_attr = kmalloc(sizeof *dev_attr, GFP_KERNEL); if (!dev_attr) @@ -2899,13 +2899,13 @@ static void srp_add_one(struct ib_device *device) * minimum of 4096 bytes. We're unlikely to build large sglists * out of smaller entries. */ - fmr_page_shift = max(12, ffs(dev_attr->page_size_cap) - 1); - srp_dev->fmr_page_size = 1 << fmr_page_shift; - srp_dev->fmr_page_mask = ~((u64) srp_dev->fmr_page_size - 1); - srp_dev->max_pages_per_fmr = min_t(u64, SRP_FMR_SIZE, - dev_attr->max_mr_size / srp_dev->fmr_page_size); - srp_dev->fmr_max_size = srp_dev->fmr_page_size * - srp_dev->max_pages_per_fmr; + mr_page_shift = max(12, ffs(dev_attr->page_size_cap) - 1); + srp_dev->mr_page_size = 1 << mr_page_shift; + srp_dev->mr_page_mask = ~((u64) srp_dev->mr_page_size - 1); + srp_dev->max_pages_per_mr = min_t(u64, SRP_MAX_PAGES_PER_MR, + dev_attr->max_mr_size / srp_dev->mr_page_size); + srp_dev->mr_max_size = srp_dev->mr_page_size * + srp_dev->max_pages_per_mr; INIT_LIST_HEAD(&srp_dev->dev_list); diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h index e45379f..fccf5df 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.h +++ b/drivers/infiniband/ulp/srp/ib_srp.h @@ -66,7 +66,7 @@ enum { SRP_TAG_NO_REQ = ~0U, SRP_TAG_TSK_MGMT = 1U << 31, - SRP_FMR_SIZE = 512, + SRP_MAX_PAGES_PER_MR = 512, SRP_MAP_ALLOW_FMR = 0, SRP_MAP_NO_FMR = 1, @@ -88,10 +88,10 @@ struct srp_device { struct ib_device *dev; struct ib_pd *pd; struct ib_mr *mr; - u64 fmr_page_mask; - int fmr_page_size; - int fmr_max_size; - int max_pages_per_fmr; + u64 mr_page_mask; + int mr_page_size; + int mr_max_size; + int max_pages_per_mr; }; struct srp_host { @@ -113,7 +113,7 @@ struct srp_request { u64 *map_page; struct srp_direct_buf *indirect_desc; dma_addr_t indirect_dma_addr; - short nfmr; + short nmdesc; short index; }; @@ -200,10 +200,10 @@ struct srp_map_state { struct srp_direct_buf *desc; u64 *pages; dma_addr_t base_dma_addr; - u32 fmr_len; + u32 dma_len; u32 total_len; unsigned int npages; - unsigned int nfmr; + unsigned int nmdesc; unsigned int ndesc; struct scatterlist *unmapped_sg; int unmapped_index;