From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 38E9D5A98 for ; Sun, 2 Jul 2017 23:35:26 +0200 (CEST) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 Jul 2017 14:35:25 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.40,299,1496127600"; d="scan'208";a="987948517" Received: from silpixa00398672.ir.intel.com ([10.237.223.128]) by orsmga003.jf.intel.com with ESMTP; 02 Jul 2017 14:35:24 -0700 From: Harry van Haaren To: dev@dpdk.org Cc: jerin.jacob@caviumnetworks.com, thomas@monjalon.net, keith.wiles@intel.com, bruce.richardson@intel.com, Harry van Haaren Date: Sun, 2 Jul 2017 22:35:12 +0100 Message-Id: <1499031314-7172-6-git-send-email-harry.van.haaren@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1499031314-7172-1-git-send-email-harry.van.haaren@intel.com> References: <1498735421-100164-1-git-send-email-harry.van.haaren@intel.com> <1499031314-7172-1-git-send-email-harry.van.haaren@intel.com> Subject: [dpdk-dev] [PATCH v3 5/7] service cores: enable event/sw with service X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 02 Jul 2017 21:35:27 -0000 This commit shows how easy it is to enable a specific DPDK component with a service callback, in order to get CPU cycles for it. The beauty of this method is that the service is unaware of how much CPU time it is getting - the application can decide how to split and slice cores and map them to the registered services. Signed-off-by: Harry van Haaren --- v2: - Remove #include (Jerin) - Remove development prints (Jerin) - Track service name in PMD - Print warning if service does not have an lcore mapped (Jerin) --- drivers/event/sw/sw_evdev.c | 32 ++++++++++++++++++++++++++++++++ drivers/event/sw/sw_evdev.h | 3 +++ 2 files changed, 35 insertions(+) diff --git a/drivers/event/sw/sw_evdev.c b/drivers/event/sw/sw_evdev.c index fe2a61e..baab376 100644 --- a/drivers/event/sw/sw_evdev.c +++ b/drivers/event/sw/sw_evdev.c @@ -38,6 +38,7 @@ #include #include #include +#include #include "sw_evdev.h" #include "iq_ring.h" @@ -597,6 +598,13 @@ sw_start(struct rte_eventdev *dev) { unsigned int i, j; struct sw_evdev *sw = sw_pmd_priv(dev); + + /* check a service core is mapped to this service */ + struct rte_service_spec *s = rte_service_get_by_name(sw->service_name); + if (!rte_service_is_running(s)) + SW_LOG_ERR("Warning: No Service core enabled on service %s\n", + s->name); + /* check all ports are set up */ for (i = 0; i < sw->port_count; i++) if (sw->ports[i].rx_worker_ring == NULL) { @@ -699,6 +707,14 @@ set_credit_quanta(const char *key __rte_unused, const char *value, void *opaque) return 0; } + +static int32_t sw_sched_service_func(void *args) +{ + struct rte_eventdev *dev = args; + sw_event_schedule(dev); + return 0; +} + static int sw_probe(struct rte_vdev_device *vdev) { @@ -810,6 +826,22 @@ sw_probe(struct rte_vdev_device *vdev) sw->credit_update_quanta = credit_quanta; sw->sched_quanta = sched_quanta; + /* register service with EAL */ + struct rte_service_spec service; + memset(&service, 0, sizeof(struct rte_service_spec)); + snprintf(service.name, sizeof(service.name), "%s_service", name); + snprintf(sw->service_name, sizeof(sw->service_name), "%s_service", + name); + service.socket_id = socket_id; + service.callback = sw_sched_service_func; + service.callback_userdata = (void *)dev; + + int32_t ret = rte_service_register(&service); + if (ret) { + SW_LOG_ERR("service register() failed"); + return -ENOEXEC; + } + return 0; } diff --git a/drivers/event/sw/sw_evdev.h b/drivers/event/sw/sw_evdev.h index 0d7f94f..3e83823 100644 --- a/drivers/event/sw/sw_evdev.h +++ b/drivers/event/sw/sw_evdev.h @@ -59,6 +59,7 @@ #define EVENTDEV_NAME_SW_PMD event_sw #define SW_PMD_NAME RTE_STR(event_sw) +#define SW_PMD_NAME_MAX 64 #define SW_SCHED_TYPE_DIRECT (RTE_SCHED_TYPE_PARALLEL + 1) @@ -276,6 +277,8 @@ struct sw_evdev { /* store num stats and offset of the stats for each queue */ uint16_t xstats_count_per_qid[RTE_EVENT_MAX_QUEUES_PER_DEV]; uint16_t xstats_offset_for_qid[RTE_EVENT_MAX_QUEUES_PER_DEV]; + + char service_name[SW_PMD_NAME_MAX]; }; static inline struct sw_evdev * -- 2.7.4