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 E9C71459BA; Tue, 17 Sep 2024 09:11:38 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 3556D40693; Tue, 17 Sep 2024 09:11:30 +0200 (CEST) Received: from mx0b-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) by mails.dpdk.org (Postfix) with ESMTP id 36DFF40665 for ; Tue, 17 Sep 2024 09:11:26 +0200 (CEST) Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 48H064tT014237; Tue, 17 Sep 2024 00:11:25 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pfpt0220; bh=l gV9JBwJn1TheZS6etwCqNeL67HCtzZ/GBoUOU9mv7g=; b=SMRugGuRTh/+yM2B2 5haXiT1f+oen5VCdluF6jxniJkoYn1jLJuqr6SY5jxnm6Mxv3P8Z3bWlc4E4uV8/ EZDSAvyedVRHoh8I16CKGF6leiGtmY5KpnlnMt7DbdU4l25czMD98ZJFz2dgMFEy 72D4SddczO+QigPgFFWJNCCjgfkfuhWnKd0YTIpIvriaJATeMjMfp/13kRyEsT0e P36X2MGSEXB5q3VgzdMEwY+MRug3xp8KW1O/zFCH5iG5jAdy65T2LgDBN3lF5EVG SWs34B+F57hBDapqxmywKicrwUWw8KWoKFIlxtePFcZ6WieCzfiiGDcNEpSHCnRm 9TV6Q== Received: from dc5-exch05.marvell.com ([199.233.59.128]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 41n7ujskgr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Sep 2024 00:11:25 -0700 (PDT) Received: from DC5-EXCH05.marvell.com (10.69.176.209) by DC5-EXCH05.marvell.com (10.69.176.209) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.4; Tue, 17 Sep 2024 00:11:24 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH05.marvell.com (10.69.176.209) with Microsoft SMTP Server id 15.2.1544.4 via Frontend Transport; Tue, 17 Sep 2024 00:11:24 -0700 Received: from MININT-80QBFE8.corp.innovium.com (MININT-80QBFE8.marvell.com [10.28.21.130]) by maili.marvell.com (Postfix) with ESMTP id 570785B694E; Tue, 17 Sep 2024 00:11:20 -0700 (PDT) From: To: , , , , , , , , CC: , Pavan Nikhilesh Subject: [PATCH v2 3/3] eventdev: add SW event preschedule hint Date: Tue, 17 Sep 2024 12:41:06 +0530 Message-ID: <20240917071106.8815-4-pbhagavatula@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240917071106.8815-1-pbhagavatula@marvell.com> References: <20240910083117.4281-1-pbhagavatula@marvell.com> <20240917071106.8815-1-pbhagavatula@marvell.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Proofpoint-GUID: mGLZsxHqwXeo63DYTMBrrazvFjHo81wG X-Proofpoint-ORIG-GUID: mGLZsxHqwXeo63DYTMBrrazvFjHo81wG X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 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 From: Pavan Nikhilesh Add a new eventdev API to provide a hint to the eventdev PMD to pre-schedule the next event into the event port, without releasing the current flow context. Event device that support this feature advertises the capability using the RTE_EVENT_DEV_CAP_SW_PRESCHEDULE capability flag. Application can invoke `rte_event_port_preschedule` to hint the PMD. Signed-off-by: Pavan Nikhilesh --- doc/guides/prog_guide/eventdev/eventdev.rst | 8 ++++ lib/eventdev/eventdev_pmd.h | 2 + lib/eventdev/eventdev_private.c | 12 ++++- lib/eventdev/eventdev_trace_points.c | 3 ++ lib/eventdev/rte_eventdev.h | 49 +++++++++++++++++++++ lib/eventdev/rte_eventdev_core.h | 5 +++ lib/eventdev/rte_eventdev_trace_fp.h | 8 ++++ lib/eventdev/version.map | 2 + 8 files changed, 87 insertions(+), 2 deletions(-) diff --git a/doc/guides/prog_guide/eventdev/eventdev.rst b/doc/guides/prog_guide/eventdev/eventdev.rst index 2deab0333e..1d8b86ab66 100644 --- a/doc/guides/prog_guide/eventdev/eventdev.rst +++ b/doc/guides/prog_guide/eventdev/eventdev.rst @@ -390,6 +390,14 @@ To enable or disable event pre-scheduling at a given event port, the application // Disable pre-scheduling if thread is about to be scheduled out and issue dequeue() to drain // pending events. +Event Pre-schedule Hint can be used to provide a hint to the eventdev PMD to pre-schedule the next +event without releasing the current flow context. Event device that support this feature advertises +the capability using the ``RTE_EVENT_DEV_CAP_SW_PRESCHEDULE`` capability flag. +If pre-scheduling is already enabled at a event device or event port level then the hint is ignored. + +.. code-block:: c + + rte_event_port_preschedule(dev_id, port_id, RTE_EVENT_DEV_PRESCHEDULE); Starting the EventDev ~~~~~~~~~~~~~~~~~~~~~ diff --git a/lib/eventdev/eventdev_pmd.h b/lib/eventdev/eventdev_pmd.h index 9ea23aa6cd..0bee2347ef 100644 --- a/lib/eventdev/eventdev_pmd.h +++ b/lib/eventdev/eventdev_pmd.h @@ -186,6 +186,8 @@ struct __rte_cache_aligned rte_eventdev { /**< Pointer to PMD Event switch profile function. */ event_preschedule_modify_t preschedule_modify; /**< Pointer to PMD Event port pre-schedule type modify function. */ + event_preschedule_t preschedule; + /**< Pointer to PMD Event port pre-schedule function. */ uint64_t reserved_64s[3]; /**< Reserved for future fields */ void *reserved_ptrs[3]; /**< Reserved for future fields */ diff --git a/lib/eventdev/eventdev_private.c b/lib/eventdev/eventdev_private.c index f0aae766ea..ed6e12dece 100644 --- a/lib/eventdev/eventdev_private.c +++ b/lib/eventdev/eventdev_private.c @@ -104,6 +104,13 @@ dummy_event_port_preschedule_modify(__rte_unused void *port, return -EINVAL; } +static void +dummy_event_port_preschedule(__rte_unused void *port, + __rte_unused rte_event_dev_preschedule_type_t preschedule) +{ + RTE_EDEV_LOG_ERR("pre-schedule requested for unconfigured event device"); +} + void event_dev_fp_ops_reset(struct rte_event_fp_ops *fp_op) { @@ -117,12 +124,12 @@ event_dev_fp_ops_reset(struct rte_event_fp_ops *fp_op) .dequeue_burst = dummy_event_dequeue_burst, .maintain = dummy_event_maintain, .txa_enqueue = dummy_event_tx_adapter_enqueue, - .txa_enqueue_same_dest = - dummy_event_tx_adapter_enqueue_same_dest, + .txa_enqueue_same_dest = dummy_event_tx_adapter_enqueue_same_dest, .ca_enqueue = dummy_event_crypto_adapter_enqueue, .dma_enqueue = dummy_event_dma_adapter_enqueue, .profile_switch = dummy_event_port_profile_switch, .preschedule_modify = dummy_event_port_preschedule_modify, + .preschedule = dummy_event_port_preschedule, .data = dummy_data, }; @@ -146,5 +153,6 @@ event_dev_fp_ops_set(struct rte_event_fp_ops *fp_op, fp_op->dma_enqueue = dev->dma_enqueue; fp_op->profile_switch = dev->profile_switch; fp_op->preschedule_modify = dev->preschedule_modify; + fp_op->preschedule = dev->preschedule; fp_op->data = dev->data->ports; } diff --git a/lib/eventdev/eventdev_trace_points.c b/lib/eventdev/eventdev_trace_points.c index e41674123c..e7af1591f7 100644 --- a/lib/eventdev/eventdev_trace_points.c +++ b/lib/eventdev/eventdev_trace_points.c @@ -52,6 +52,9 @@ RTE_TRACE_POINT_REGISTER(rte_eventdev_trace_port_profile_switch, RTE_TRACE_POINT_REGISTER(rte_eventdev_trace_port_preschedule_modify, lib.eventdev.port.preschedule.modify) +RTE_TRACE_POINT_REGISTER(rte_eventdev_trace_port_preschedule, + lib.eventdev.port.preschedule) + /* Eventdev Rx adapter trace points */ RTE_TRACE_POINT_REGISTER(rte_eventdev_trace_eth_rx_adapter_create, lib.eventdev.rx.adapter.create) diff --git a/lib/eventdev/rte_eventdev.h b/lib/eventdev/rte_eventdev.h index 0add0093ac..8df6a8bee1 100644 --- a/lib/eventdev/rte_eventdev.h +++ b/lib/eventdev/rte_eventdev.h @@ -480,6 +480,15 @@ struct rte_event; * @see rte_event_port_preschedule_modify() */ +#define RTE_EVENT_DEV_CAP_SW_PRESCHEDULE (1ULL << 19) +/**< Event device supports software prescheduling. + * + * When this flag is set, the application can issue preschedule request on + * a event port. + * + * @see rte_event_port_preschedule() + */ + /* Event device priority levels */ #define RTE_EVENT_DEV_PRIORITY_HIGHEST 0 /**< Highest priority level for events and queues. @@ -2977,6 +2986,46 @@ rte_event_port_preschedule_modify(uint8_t dev_id, uint8_t port_id, return fp_ops->preschedule_modify(port, type); } +/** + * Provide a hint to the event device to pre-schedule events to event port . + * + * Hint the event device to pre-schedule events to the event port. + * The call doesn't not guarantee that the events will be pre-scheduleed. + * The call doesn't release the flow context currently held by the event port. + * The event device should support RTE_EVENT_DEV_CAP_SW_PRESCHEDULE capability. + * + * When pre-scheduling is enabled at an event device or event port level, the + * hint is ignored. + * + * Subsequent calls to rte_event_dequeue_burst() will dequeue the pre-schedule + * events but pre-schedule operation is not issued again. + * + * @param dev_id + * The identifier of the device. + * @param port_id + * The identifier of the event port. + * @param type + * The pre-schedule type to use on the event port. + */ +static inline void +rte_event_port_preschedule(uint8_t dev_id, uint8_t port_id, rte_event_dev_preschedule_type_t type) +{ + const struct rte_event_fp_ops *fp_ops; + void *port; + + fp_ops = &rte_event_fp_ops[dev_id]; + port = fp_ops->data[port_id]; + +#ifdef RTE_LIBRTE_EVENTDEV_DEBUG + if (dev_id >= RTE_EVENT_MAX_DEVS || port_id >= RTE_EVENT_MAX_PORTS_PER_DEV) + return; + if (port == NULL) + return; +#endif + rte_eventdev_trace_port_preschedule(dev_id, port_id, type); + + fp_ops->preschedule(port, type); +} #ifdef __cplusplus } #endif diff --git a/lib/eventdev/rte_eventdev_core.h b/lib/eventdev/rte_eventdev_core.h index 2275888a6b..21988abb4f 100644 --- a/lib/eventdev/rte_eventdev_core.h +++ b/lib/eventdev/rte_eventdev_core.h @@ -53,6 +53,9 @@ typedef int (*event_preschedule_modify_t)(void *port, rte_event_dev_preschedule_type_t preschedule_type); /**< @internal Modify pre-schedule type on the event port. */ +typedef void (*event_preschedule_t)(void *port, rte_event_dev_preschedule_type_t preschedule_type); +/**< @internal Issue pre-schedule on an event port. */ + struct __rte_cache_aligned rte_event_fp_ops { void **data; /**< points to array of internal port data pointers */ @@ -82,6 +85,8 @@ struct __rte_cache_aligned rte_event_fp_ops { /**< PMD Event switch profile function. */ event_preschedule_modify_t preschedule_modify; /**< PMD Event port pre-schedule switch. */ + event_preschedule_t preschedule; + /**< PMD Event port pre-schedule. */ uintptr_t reserved[4]; }; diff --git a/lib/eventdev/rte_eventdev_trace_fp.h b/lib/eventdev/rte_eventdev_trace_fp.h index 78baed94de..8290f8a248 100644 --- a/lib/eventdev/rte_eventdev_trace_fp.h +++ b/lib/eventdev/rte_eventdev_trace_fp.h @@ -63,6 +63,14 @@ RTE_TRACE_POINT_FP( rte_trace_point_emit_int(type); ) +RTE_TRACE_POINT_FP( + rte_eventdev_trace_port_preschedule, + RTE_TRACE_POINT_ARGS(uint8_t dev_id, uint8_t port_id, int type), + rte_trace_point_emit_u8(dev_id); + rte_trace_point_emit_u8(port_id); + rte_trace_point_emit_int(type); +) + RTE_TRACE_POINT_FP( rte_eventdev_trace_eth_tx_adapter_enqueue, RTE_TRACE_POINT_ARGS(uint8_t dev_id, uint8_t port_id, void *ev_table, diff --git a/lib/eventdev/version.map b/lib/eventdev/version.map index b6d63ba576..42a5867aba 100644 --- a/lib/eventdev/version.map +++ b/lib/eventdev/version.map @@ -151,6 +151,8 @@ EXPERIMENTAL { # added in 24.11 rte_event_port_preschedule_modify; __rte_eventdev_trace_port_preschedule_modify; + rte_event_port_preschedule; + __rte_eventdev_trace_port_preschedule; }; INTERNAL { -- 2.25.1