From owner-svn-src-all@freebsd.org Mon Dec 10 09:35:34 2018 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C23BB1317F4A; Mon, 10 Dec 2018 09:35:34 +0000 (UTC) (envelope-from arybchik@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 694AE6FBD2; Mon, 10 Dec 2018 09:35:34 +0000 (UTC) (envelope-from arybchik@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 3EEE81E260; Mon, 10 Dec 2018 09:35:34 +0000 (UTC) (envelope-from arybchik@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id wBA9ZYXf002340; Mon, 10 Dec 2018 09:35:34 GMT (envelope-from arybchik@FreeBSD.org) Received: (from arybchik@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id wBA9ZXa6002338; Mon, 10 Dec 2018 09:35:33 GMT (envelope-from arybchik@FreeBSD.org) Message-Id: <201812100935.wBA9ZXa6002338@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: arybchik set sender to arybchik@FreeBSD.org using -f From: Andrew Rybchenko Date: Mon, 10 Dec 2018 09:35:33 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r341782 - head/sys/dev/sfxge X-SVN-Group: head X-SVN-Commit-Author: arybchik X-SVN-Commit-Paths: head/sys/dev/sfxge X-SVN-Commit-Revision: 341782 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 694AE6FBD2 X-Spamd-Result: default: False [-2.96 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.997,0]; NEURAL_HAM_LONG(-0.99)[-0.991,0]; NEURAL_HAM_SHORT(-0.97)[-0.968,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 10 Dec 2018 09:35:35 -0000 Author: arybchik Date: Mon Dec 10 09:35:33 2018 New Revision: 341782 URL: https://svnweb.freebsd.org/changeset/base/341782 Log: sfxge(4): populate per-event queue stats in sysctl In order to find out why the first event queue and corresponding interrupt is triggered more frequent, it is useful to know which events go to each event queue. Sponsored by: Solarflare Communications, Inc. MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D18418 Modified: head/sys/dev/sfxge/sfxge.h head/sys/dev/sfxge/sfxge_ev.c Modified: head/sys/dev/sfxge/sfxge.h ============================================================================== --- head/sys/dev/sfxge/sfxge.h Mon Dec 10 04:16:40 2018 (r341781) +++ head/sys/dev/sfxge/sfxge.h Mon Dec 10 09:35:33 2018 (r341782) @@ -184,6 +184,10 @@ struct sfxge_evq { unsigned int buf_base_id; unsigned int entries; char lock_name[SFXGE_LOCK_NAME_MAX]; +#if EFSYS_OPT_QSTATS + clock_t stats_update_time; + uint64_t stats[EV_NQSTATS]; +#endif } __aligned(CACHE_LINE_SIZE); #define SFXGE_NDESCS 1024 @@ -275,6 +279,9 @@ struct sfxge_softc { struct ifnet *ifnet; unsigned int if_flags; struct sysctl_oid *stats_node; +#if EFSYS_OPT_QSTATS + struct sysctl_oid *evqs_stats_node; +#endif struct sysctl_oid *txqs_node; struct task task_reset; Modified: head/sys/dev/sfxge/sfxge_ev.c ============================================================================== --- head/sys/dev/sfxge/sfxge_ev.c Mon Dec 10 04:16:40 2018 (r341781) +++ head/sys/dev/sfxge/sfxge_ev.c Mon Dec 10 09:35:33 2018 (r341782) @@ -443,29 +443,94 @@ sfxge_ev_wake_up(void *arg, uint32_t index) #if EFSYS_OPT_QSTATS static void +sfxge_evq_stat_update(struct sfxge_evq *evq) +{ + clock_t now; + + SFXGE_EVQ_LOCK(evq); + + if (__predict_false(evq->init_state != SFXGE_EVQ_STARTED)) + goto out; + + now = ticks; + if ((unsigned int)(now - evq->stats_update_time) < (unsigned int)hz) + goto out; + + evq->stats_update_time = now; + efx_ev_qstats_update(evq->common, evq->stats); + +out: + SFXGE_EVQ_UNLOCK(evq); +} + +static int +sfxge_evq_stat_handler(SYSCTL_HANDLER_ARGS) +{ + struct sfxge_evq *evq = arg1; + struct sfxge_softc *sc = evq->sc; + unsigned int id = arg2; + + SFXGE_ADAPTER_LOCK(sc); + + sfxge_evq_stat_update(evq); + + SFXGE_ADAPTER_UNLOCK(sc); + + return (SYSCTL_OUT(req, &evq->stats[id], sizeof(evq->stats[id]))); +} + +static int +sfxge_evq_stat_init(struct sfxge_evq *evq) +{ + struct sfxge_softc *sc = evq->sc; + struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev); + char name[16]; + struct sysctl_oid *evq_stats_node; + unsigned int id; + + snprintf(name, sizeof(name), "%u", evq->index); + evq_stats_node = SYSCTL_ADD_NODE(ctx, + SYSCTL_CHILDREN(sc->evqs_stats_node), + OID_AUTO, name, CTLFLAG_RD, NULL, ""); + if (evq_stats_node == NULL) + return (ENOMEM); + + for (id = 0; id < EV_NQSTATS; id++) { + SYSCTL_ADD_PROC( + ctx, SYSCTL_CHILDREN(evq_stats_node), + OID_AUTO, efx_ev_qstat_name(sc->enp, id), + CTLTYPE_U64|CTLFLAG_RD, + evq, id, sfxge_evq_stat_handler, "Q", + ""); + } + + return (0); +} + +static void sfxge_ev_stat_update(struct sfxge_softc *sc) { struct sfxge_evq *evq; unsigned int index; clock_t now; + unsigned int id; SFXGE_ADAPTER_LOCK(sc); - if (__predict_false(sc->evq[0]->init_state != SFXGE_EVQ_STARTED)) - goto out; - now = ticks; if ((unsigned int)(now - sc->ev_stats_update_time) < (unsigned int)hz) goto out; sc->ev_stats_update_time = now; - /* Add event counts from each event queue in turn */ + memset(sc->ev_stats, 0, sizeof(sc->ev_stats)); + + /* Update and add event counts from each event queue in turn */ for (index = 0; index < sc->evq_count; index++) { evq = sc->evq[index]; - SFXGE_EVQ_LOCK(evq); - efx_ev_qstats_update(evq->common, sc->ev_stats); - SFXGE_EVQ_UNLOCK(evq); + sfxge_evq_stat_update(evq); + for (id = 0; id < EV_NQSTATS; id++) + sc->ev_stats[id] += evq->stats[id]; } out: SFXGE_ADAPTER_UNLOCK(sc); @@ -672,7 +737,7 @@ sfxge_ev_qstop(struct sfxge_softc *sc, unsigned int in #if EFSYS_OPT_QSTATS /* Add event counts before discarding the common evq state */ - efx_ev_qstats_update(evq->common, sc->ev_stats); + efx_ev_qstats_update(evq->common, evq->stats); #endif efx_ev_qdestroy(evq->common); @@ -873,7 +938,24 @@ sfxge_ev_qinit(struct sfxge_softc *sc, unsigned int in evq->init_state = SFXGE_EVQ_INITIALIZED; +#if EFSYS_OPT_QSTATS + rc = sfxge_evq_stat_init(evq); + if (rc != 0) + goto fail_evq_stat_init; +#endif + return (0); + +#if EFSYS_OPT_QSTATS +fail_evq_stat_init: + evq->init_state = SFXGE_EVQ_UNINITIALIZED; + SFXGE_EVQ_LOCK_DESTROY(evq); + sfxge_dma_free(esmp); + sc->evq[index] = NULL; + free(evq, M_SFXGE); + + return (rc); +#endif } void @@ -922,6 +1004,16 @@ sfxge_ev_init(struct sfxge_softc *sc) sc, 0, sfxge_int_mod_handler, "IU", "sfxge interrupt moderation (us)"); +#if EFSYS_OPT_QSTATS + sc->evqs_stats_node = SYSCTL_ADD_NODE( + device_get_sysctl_ctx(sc->dev), SYSCTL_CHILDREN(sc->stats_node), + OID_AUTO, "evq", CTLFLAG_RD, NULL, "Event queues stats"); + if (sc->evqs_stats_node == NULL) { + rc = ENOMEM; + goto fail_evqs_stats_node; + } +#endif + /* * Initialize the event queue(s) - one per interrupt. */ @@ -940,6 +1032,9 @@ fail: while (--index >= 0) sfxge_ev_qfini(sc, index); +#if EFSYS_OPT_QSTATS +fail_evqs_stats_node: +#endif sc->evq_count = 0; return (rc); }