From patchwork Wed Mar 11 16:12:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinpu Wang X-Patchwork-Id: 11432091 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2F4C11392 for ; Wed, 11 Mar 2020 16:12:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E24FA2072F for ; Wed, 11 Mar 2020 16:12:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cloud.ionos.com header.i=@cloud.ionos.com header.b="i5L1wwZL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730178AbgCKQM5 (ORCPT ); Wed, 11 Mar 2020 12:12:57 -0400 Received: from mail-wr1-f65.google.com ([209.85.221.65]:46874 "EHLO mail-wr1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730169AbgCKQM4 (ORCPT ); Wed, 11 Mar 2020 12:12:56 -0400 Received: by mail-wr1-f65.google.com with SMTP id n15so3342239wrw.13 for ; Wed, 11 Mar 2020 09:12:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloud.ionos.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=xnJlkgAeBOnqnHx7Vaj78zqK/hIRfn2aCVmlMB4QPmY=; b=i5L1wwZL+lz6wJ+0ELXRSbCrJnLDo5dty5fnT9GLgTx3VGNSo6wunvLTJNs/eMiF/J JPdyncXVWt2OW4RiFkqyobn21esMnKrLS8waW1YSKWjWYy99AmnMRVZtfc+40rtd7UAx BR67BqVG0Yw8leQ/9ws4MWVHUtUs7WDnKU/lxC7vOsaNaIcumvMR1Qt7F/3OP98DshNm F7lib12h5RpQhdnOr6JDpPGxsfl9k8ud4Oqt42huqjOffatWVRp/WkKRB7TLVwZXtvrs HUvffYQWk3XlsR4LyTKVO6+URk4079b5SgdU6uDDr19yLsCD7j6BKa/2j/Zn3x8+A4Le k5BA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=xnJlkgAeBOnqnHx7Vaj78zqK/hIRfn2aCVmlMB4QPmY=; b=ocYLNGbC+YDywbi3i1YV0guyvp+s78WDBE1HmXVhnyI+6YI61CME/iFBLRpmG7ZJoh 7xDVvspvfzt0+PgwILGj7TqfSY6L3nkOOnxI1mKnylCJk+t5sw5Kg4vDCxUWOPfCkaWG DrccrmdMYa0zzKJnFM2m0F0jsaADnti6HGGL4Z+AYgg6fWKw+nUC2WST6NfAwyBXf9PD HYjVAeS7oK9WvqgKzMkqdBKw/HJiiCiEntPDQBNvh2Si8YjM1g/8yk/d1uDI7Ll5SggD WBGIyIjTIkdcLqJsOiwWL9hsa8VkMDdFTDhnJvkw1VVxjf5ed7GYeTpbeO61BlWc+DZo Aidw== X-Gm-Message-State: ANhLgQ0AQ+Mo0ioihDDaLM6pAxU3+erfgreHs6ifhICVVKxhUO6VNpJX zGIpENnESeOZfRJ+pQ92o1rejw== X-Google-Smtp-Source: ADFU+vsDR3lVnpwik2WEVIr7YjInkf2Yxj0RcV5Piggs4atkmfNyuTMM/+aTWanpz8c7tHsgp+e7vQ== X-Received: by 2002:a5d:5089:: with SMTP id a9mr5342517wrt.187.1583943174554; Wed, 11 Mar 2020 09:12:54 -0700 (PDT) Received: from jwang-Latitude-5491.fritz.box ([2001:16b8:4963:f600:4938:8f65:9543:5ec9]) by smtp.gmail.com with ESMTPSA id v13sm2739332wru.47.2020.03.11.09.12.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Mar 2020 09:12:54 -0700 (PDT) From: Jack Wang To: linux-block@vger.kernel.org, linux-rdma@vger.kernel.org Cc: axboe@kernel.dk, hch@infradead.org, sagi@grimberg.me, bvanassche@acm.org, leon@kernel.org, dledford@redhat.com, jgg@ziepe.ca, danil.kipnis@cloud.ionos.com, jinpu.wang@cloud.ionos.com, rpenyaev@suse.de, pankaj.gupta@cloud.ionos.com Subject: [PATCH v10 07/26] RDMA/rtrs: client: statistics functions Date: Wed, 11 Mar 2020 17:12:21 +0100 Message-Id: <20200311161240.30190-8-jinpu.wang@cloud.ionos.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200311161240.30190-1-jinpu.wang@cloud.ionos.com> References: <20200311161240.30190-1-jinpu.wang@cloud.ionos.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org This introduces set of functions used on client side to account statistics of RDMA data sent/received, amount of IOs inflight, latency, cpu migrations, etc. Almost all statistics are collected using percpu variables. Signed-off-by: Danil Kipnis Signed-off-by: Jack Wang --- drivers/infiniband/ulp/rtrs/rtrs-clt-stats.c | 205 +++++++++++++++++++ 1 file changed, 205 insertions(+) create mode 100644 drivers/infiniband/ulp/rtrs/rtrs-clt-stats.c diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt-stats.c b/drivers/infiniband/ulp/rtrs/rtrs-clt-stats.c new file mode 100644 index 000000000000..3f556b884a4e --- /dev/null +++ b/drivers/infiniband/ulp/rtrs/rtrs-clt-stats.c @@ -0,0 +1,205 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * RDMA Transport Layer + * + * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved. + * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved. + * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved. + */ +#undef pr_fmt +#define pr_fmt(fmt) KBUILD_MODNAME " L" __stringify(__LINE__) ": " fmt + +#include "rtrs-clt.h" + +void rtrs_clt_update_wc_stats(struct rtrs_clt_con *con) +{ + struct rtrs_clt_sess *sess = to_clt_sess(con->c.sess); + struct rtrs_clt_stats *stats = &sess->stats; + struct rtrs_clt_stats_pcpu *s; + int cpu; + + cpu = raw_smp_processor_id(); + s = this_cpu_ptr(stats->pcpu_stats); + if (unlikely(con->cpu != cpu)) { + s->cpu_migr.to++; + + /* Careful here, override s pointer */ + s = per_cpu_ptr(stats->pcpu_stats, con->cpu); + atomic_inc(&s->cpu_migr.from); + } +} + +void rtrs_clt_inc_failover_cnt(struct rtrs_clt_stats *stats) +{ + struct rtrs_clt_stats_pcpu *s; + + s = this_cpu_ptr(stats->pcpu_stats); + s->rdma.failover_cnt++; +} + +int rtrs_clt_stats_migration_cnt_to_str(struct rtrs_clt_stats *stats, + char *buf, size_t len) +{ + struct rtrs_clt_stats_pcpu *s; + + size_t used; + int cpu; + + used = scnprintf(buf, len, " "); + for_each_possible_cpu(cpu) + used += scnprintf(buf + used, len - used, " CPU%u", cpu); + + used += scnprintf(buf + used, len - used, "\nfrom:"); + for_each_possible_cpu(cpu) { + s = per_cpu_ptr(stats->pcpu_stats, cpu); + used += scnprintf(buf + used, len - used, " %d", + atomic_read(&s->cpu_migr.from)); + } + + used += scnprintf(buf + used, len - used, "\nto :"); + for_each_possible_cpu(cpu) { + s = per_cpu_ptr(stats->pcpu_stats, cpu); + used += scnprintf(buf + used, len - used, " %d", + s->cpu_migr.to); + } + used += scnprintf(buf + used, len - used, "\n"); + + return used; +} + +int rtrs_clt_stats_reconnects_to_str(struct rtrs_clt_stats *stats, char *buf, + size_t len) +{ + return scnprintf(buf, len, "%d %d\n", + stats->reconnects.successful_cnt, + stats->reconnects.fail_cnt); +} + +ssize_t rtrs_clt_stats_rdma_to_str(struct rtrs_clt_stats *stats, + char *page, size_t len) +{ + struct rtrs_clt_stats_rdma sum; + struct rtrs_clt_stats_rdma *r; + int cpu; + + memset(&sum, 0, sizeof(sum)); + + for_each_possible_cpu(cpu) { + r = &per_cpu_ptr(stats->pcpu_stats, cpu)->rdma; + + sum.dir[READ].cnt += r->dir[READ].cnt; + sum.dir[READ].size_total += r->dir[READ].size_total; + sum.dir[WRITE].cnt += r->dir[WRITE].cnt; + sum.dir[WRITE].size_total += r->dir[WRITE].size_total; + sum.failover_cnt += r->failover_cnt; + } + + return scnprintf(page, len, "%llu %llu %llu %llu %u %llu\n", + sum.dir[READ].cnt, sum.dir[READ].size_total, + sum.dir[WRITE].cnt, sum.dir[WRITE].size_total, + atomic_read(&stats->inflight), sum.failover_cnt); +} + +ssize_t rtrs_clt_reset_all_help(struct rtrs_clt_stats *s, + char *page, size_t len) +{ + return scnprintf(page, len, "echo 1 to reset all statistics\n"); +} + +int rtrs_clt_reset_rdma_stats(struct rtrs_clt_stats *stats, bool enable) +{ + struct rtrs_clt_stats_pcpu *s; + int cpu; + + if (!enable) + return -EINVAL; + + for_each_possible_cpu(cpu) { + s = per_cpu_ptr(stats->pcpu_stats, cpu); + memset(&s->rdma, 0, sizeof(s->rdma)); + } + + return 0; +} + +int rtrs_clt_reset_cpu_migr_stats(struct rtrs_clt_stats *stats, bool enable) +{ + struct rtrs_clt_stats_pcpu *s; + int cpu; + + if (!enable) + return -EINVAL; + + for_each_possible_cpu(cpu) { + s = per_cpu_ptr(stats->pcpu_stats, cpu); + memset(&s->cpu_migr, 0, sizeof(s->cpu_migr)); + } + + return 0; +} + +int rtrs_clt_reset_reconnects_stat(struct rtrs_clt_stats *stats, bool enable) +{ + if (!enable) + return -EINVAL; + + memset(&stats->reconnects, 0, sizeof(stats->reconnects)); + + return 0; +} + +int rtrs_clt_reset_all_stats(struct rtrs_clt_stats *s, bool enable) +{ + if (enable) { + rtrs_clt_reset_rdma_stats(s, enable); + rtrs_clt_reset_cpu_migr_stats(s, enable); + rtrs_clt_reset_reconnects_stat(s, enable); + atomic_set(&s->inflight, 0); + return 0; + } + + return -EINVAL; +} + +static inline void rtrs_clt_update_rdma_stats(struct rtrs_clt_stats *stats, + size_t size, int d) +{ + struct rtrs_clt_stats_pcpu *s; + + s = this_cpu_ptr(stats->pcpu_stats); + s->rdma.dir[d].cnt++; + s->rdma.dir[d].size_total += size; +} + +void rtrs_clt_update_all_stats(struct rtrs_clt_io_req *req, int dir) +{ + struct rtrs_clt_con *con = req->con; + struct rtrs_clt_sess *sess = to_clt_sess(con->c.sess); + struct rtrs_clt_stats *stats = &sess->stats; + unsigned int len; + + len = req->usr_len + req->data_len; + rtrs_clt_update_rdma_stats(stats, len, dir); + if (sess->clt->mp_policy == MP_POLICY_MIN_INFLIGHT) + atomic_inc(&stats->inflight); +} + +int rtrs_clt_init_stats(struct rtrs_clt_stats *stats) +{ + stats->pcpu_stats = alloc_percpu(typeof(*stats->pcpu_stats)); + if (!stats->pcpu_stats) + return -ENOMEM; + + /* + * successful_cnt will be set to 0 after session + * is established for the first time + */ + stats->reconnects.successful_cnt = -1; + + return 0; +} + +void rtrs_clt_free_stats(struct rtrs_clt_stats *stats) +{ + free_percpu(stats->pcpu_stats); +}