From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 55A98A0540; Wed, 10 Aug 2022 09:07:29 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id DE48540A87; Wed, 10 Aug 2022 09:07:28 +0200 (CEST) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by mails.dpdk.org (Postfix) with ESMTP id 860AE4068E for ; Wed, 10 Aug 2022 09:07:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1660115246; x=1691651246; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ByrjgIcSAsNTxpTxFF8Z+4VrQ3Ia6SyD1lk/DC5MYX0=; b=H90AseKzWMdT4XEuIf+P8k0cYXIy9oobRL0HEQeKWOvcNn/0IVJTWTz+ A3tVc4ZM9VjJj0vWDG2dwTDMbDUOajBHillk7lCZA/t1EM17Vob0ZjS2K k0uKWJmqL6+9J3cuNkO5MAIVGTxB1CkPVq11Fuub8tknHfIjqWhXMLxLF iPPf2SF40Tvjni4hWjTRigVCJQDKTxYwirPLaJQmmw+QzVNj6ylawvorF nHdfC7qcxUtBXPJ+kZF0WvNLbZvB3CzHO5C262z/tV5+8XFC6RhUtXUTq PohJW1V71a8zNDeYVjWewZXxxYPsJ4T2WASoRbxv/qn7V1D1socUIa2Eq A==; X-IronPort-AV: E=McAfee;i="6400,9594,10434"; a="270791106" X-IronPort-AV: E=Sophos;i="5.93,226,1654585200"; d="scan'208";a="270791106" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Aug 2022 00:07:25 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,226,1654585200"; d="scan'208";a="664773478" Received: from txandevlnx322.an.intel.com ([10.123.117.44]) by fmsmga008.fm.intel.com with ESMTP; 10 Aug 2022 00:07:25 -0700 From: Naga Harish K S V To: erik.g.carrillo@intel.com, jerinj@marvell.com Cc: pbhagavatula@marvell.com, sthotton@marvell.com, dev@dpdk.org Subject: [PATCH v2 1/4] eventdev/timer: add periodic event timer support Date: Wed, 10 Aug 2022 02:07:21 -0500 Message-Id: <20220810070722.3110873-1-s.v.naga.harish.k@intel.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20220803162542.3145559-1-s.v.naga.harish.k@intel.com> References: <20220803162542.3145559-1-s.v.naga.harish.k@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org This patch adds support to configure and use periodic event timers in software timer adapter. The structure ``rte_event_timer_adapter_stats`` is extended by adding a new field, ``evtim_drop_count``. This stat represents the number of times an event_timer expiry event is dropped by the event timer adapter. Signed-off-by: Naga Harish K S V --- lib/eventdev/rte_event_timer_adapter.c | 86 ++++++++++++++++++-------- lib/eventdev/rte_event_timer_adapter.h | 2 + lib/eventdev/rte_eventdev.c | 6 +- 3 files changed, 67 insertions(+), 27 deletions(-) diff --git a/lib/eventdev/rte_event_timer_adapter.c b/lib/eventdev/rte_event_timer_adapter.c index e0d978d641..0de88dfc0f 100644 --- a/lib/eventdev/rte_event_timer_adapter.c +++ b/lib/eventdev/rte_event_timer_adapter.c @@ -53,6 +53,14 @@ static const struct event_timer_adapter_ops swtim_ops; #define EVTIM_SVC_LOG_DBG(...) (void)0 #endif +static inline enum rte_timer_type +get_event_timer_type(const struct rte_event_timer_adapter *adapter) +{ + return (adapter->data->conf.flags & + RTE_EVENT_TIMER_ADAPTER_F_PERIODIC) ? + PERIODICAL : SINGLE; +} + static int default_port_conf_cb(uint16_t id, uint8_t event_dev_id, uint8_t *event_port_id, void *conf_arg) @@ -195,10 +203,11 @@ rte_event_timer_adapter_create_ext( adapter->data->conf = *conf; /* copy conf structure */ /* Query eventdev PMD for timer adapter capabilities and ops */ - ret = dev->dev_ops->timer_adapter_caps_get(dev, + ret = dev->dev_ops->timer_adapter_caps_get ? + dev->dev_ops->timer_adapter_caps_get(dev, adapter->data->conf.flags, &adapter->data->caps, - &adapter->ops); + &adapter->ops) : 0; if (ret < 0) { rte_errno = -ret; goto free_memzone; @@ -348,10 +357,11 @@ rte_event_timer_adapter_lookup(uint16_t adapter_id) dev = &rte_eventdevs[adapter->data->event_dev_id]; /* Query eventdev PMD for timer adapter capabilities and ops */ - ret = dev->dev_ops->timer_adapter_caps_get(dev, + ret = dev->dev_ops->timer_adapter_caps_get ? + dev->dev_ops->timer_adapter_caps_get(dev, adapter->data->conf.flags, &adapter->data->caps, - &adapter->ops); + &adapter->ops) : 0; if (ret < 0) { rte_errno = EINVAL; return NULL; @@ -612,35 +622,44 @@ swtim_callback(struct rte_timer *tim) uint64_t opaque; int ret; int n_lcores; + enum rte_timer_type type; opaque = evtim->impl_opaque[1]; adapter = (struct rte_event_timer_adapter *)(uintptr_t)opaque; sw = swtim_pmd_priv(adapter); + type = get_event_timer_type(adapter); + + if (unlikely(sw->in_use[lcore].v == 0)) { + sw->in_use[lcore].v = 1; + n_lcores = __atomic_fetch_add(&sw->n_poll_lcores, 1, + __ATOMIC_RELAXED); + __atomic_store_n(&sw->poll_lcores[n_lcores], lcore, + __ATOMIC_RELAXED); + } ret = event_buffer_add(&sw->buffer, &evtim->ev); if (ret < 0) { - /* If event buffer is full, put timer back in list with - * immediate expiry value, so that we process it again on the - * next iteration. - */ - ret = rte_timer_alt_reset(sw->timer_data_id, tim, 0, SINGLE, - lcore, NULL, evtim); - if (ret < 0) { - EVTIM_LOG_DBG("event buffer full, failed to reset " - "timer with immediate expiry value"); + if (type == SINGLE) { + /* If event buffer is full, put timer back in list with + * immediate expiry value, so that we process it again + * on the next iteration. + */ + ret = rte_timer_alt_reset(sw->timer_data_id, tim, 0, + SINGLE, lcore, NULL, evtim); + if (ret < 0) { + EVTIM_LOG_DBG("event buffer full, failed to " + "reset timer with immediate " + "expiry value"); + } else { + sw->stats.evtim_retry_count++; + EVTIM_LOG_DBG("event buffer full, resetting " + "rte_timer with immediate " + "expiry value"); + } } else { - sw->stats.evtim_retry_count++; - EVTIM_LOG_DBG("event buffer full, resetting rte_timer " - "with immediate expiry value"); + sw->stats.evtim_drop_count++; } - if (unlikely(sw->in_use[lcore].v == 0)) { - sw->in_use[lcore].v = 1; - n_lcores = __atomic_fetch_add(&sw->n_poll_lcores, 1, - __ATOMIC_RELAXED); - __atomic_store_n(&sw->poll_lcores[n_lcores], lcore, - __ATOMIC_RELAXED); - } } else { EVTIM_BUF_LOG_DBG("buffered an event timer expiry event"); @@ -654,10 +673,15 @@ swtim_callback(struct rte_timer *tim) sw->n_expired_timers = 0; } - sw->expired_timers[sw->n_expired_timers++] = tim; + /* Don't free rte_timer for a periodic event timer until + * it is cancelled + */ + if (type == SINGLE) + sw->expired_timers[sw->n_expired_timers++] = tim; sw->stats.evtim_exp_count++; - __atomic_store_n(&evtim->state, RTE_EVENT_TIMER_NOT_ARMED, + if (type == SINGLE) + __atomic_store_n(&evtim->state, RTE_EVENT_TIMER_NOT_ARMED, __ATOMIC_RELEASE); } @@ -947,6 +971,12 @@ swtim_uninit(struct rte_event_timer_adapter *adapter) swtim_free_tim, sw); + ret = rte_timer_data_dealloc(sw->timer_data_id); + if (ret < 0) { + EVTIM_LOG_ERR("failed to deallocate timer data instance"); + return ret; + } + ret = rte_service_component_unregister(sw->service_id); if (ret < 0) { EVTIM_LOG_ERR("failed to unregister service component"); @@ -1053,6 +1083,7 @@ __swtim_arm_burst(const struct rte_event_timer_adapter *adapter, /* Timer list for this lcore is not in use. */ uint16_t exp_state = 0; enum rte_event_timer_state n_state; + enum rte_timer_type type = SINGLE; #ifdef RTE_LIBRTE_EVENTDEV_DEBUG /* Check that the service is running. */ @@ -1092,6 +1123,9 @@ __swtim_arm_burst(const struct rte_event_timer_adapter *adapter, return 0; } + /* update timer type for periodic adapter */ + type = get_event_timer_type(adapter); + for (i = 0; i < nb_evtims; i++) { n_state = __atomic_load_n(&evtims[i]->state, __ATOMIC_ACQUIRE); if (n_state == RTE_EVENT_TIMER_ARMED) { @@ -1135,7 +1169,7 @@ __swtim_arm_burst(const struct rte_event_timer_adapter *adapter, cycles = get_timeout_cycles(evtims[i], adapter); ret = rte_timer_alt_reset(sw->timer_data_id, tim, cycles, - SINGLE, lcore_id, NULL, evtims[i]); + type, lcore_id, NULL, evtims[i]); if (ret < 0) { /* tim was in RUNNING or CONFIG state */ __atomic_store_n(&evtims[i]->state, diff --git a/lib/eventdev/rte_event_timer_adapter.h b/lib/eventdev/rte_event_timer_adapter.h index eab8e59a57..cd10db19e4 100644 --- a/lib/eventdev/rte_event_timer_adapter.h +++ b/lib/eventdev/rte_event_timer_adapter.h @@ -193,6 +193,8 @@ struct rte_event_timer_adapter_stats { /**< Event timer retry count */ uint64_t adapter_tick_count; /**< Tick count for the adapter, at its resolution */ + uint64_t evtim_drop_count; + /**< event timer expiries dropped */ }; struct rte_event_timer_adapter; diff --git a/lib/eventdev/rte_eventdev.c b/lib/eventdev/rte_eventdev.c index 1dc4f966be..4a2a1178da 100644 --- a/lib/eventdev/rte_eventdev.c +++ b/lib/eventdev/rte_eventdev.c @@ -139,7 +139,11 @@ rte_event_timer_adapter_caps_get(uint8_t dev_id, uint32_t *caps) if (caps == NULL) return -EINVAL; - *caps = 0; + + if (dev->dev_ops->timer_adapter_caps_get == NULL) + *caps = RTE_EVENT_TIMER_ADAPTER_CAP_PERIODIC; + else + *caps = 0; return dev->dev_ops->timer_adapter_caps_get ? (*dev->dev_ops->timer_adapter_caps_get)(dev, -- 2.25.1