From: "Mattias Rönnblom" <mattias.ronnblom@ericsson.com>
To: Shijith Thotton <sthotton@marvell.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"jerinj@marvell.com" <jerinj@marvell.com>
Cc: "pbhagavatula@marvell.com" <pbhagavatula@marvell.com>
Subject: Re: [PATCH 2/6] eventdev: add weight and affinity to queue attributes
Date: Wed, 30 Mar 2022 12:12:32 +0000 [thread overview]
Message-ID: <a401481e-d431-5e3c-0513-fd6bfd5a732c@ericsson.com> (raw)
In-Reply-To: <e2b3e29b78e4273fbad717d5095e431095beec31.1648549553.git.sthotton@marvell.com>
On 2022-03-29 15:11, Shijith Thotton wrote:
> Extended eventdev queue QoS attributes to support weight and affinity.
> If queues are of same priority, events from the queue with highest
> weight will be scheduled first. Affinity indicates the number of times,
> the subsequent schedule calls from an event port will use the same event
> queue. Schedule call selects another queue if current queue goes empty
> or schedule count reaches affinity count.
>
> To avoid ABI break, weight and affinity attributes are not yet added to
> queue config structure and relies on PMD for managing it. New eventdev
> op queue_attr_get can be used to get it from the PMD.
Have you considered using a PMD-specific command line parameter as a
stop-gap until you can extend the config struct?
> Signed-off-by: Shijith Thotton <sthotton@marvell.com>
> ---
> lib/eventdev/eventdev_pmd.h | 22 ++++++++++++++++++++
> lib/eventdev/rte_eventdev.c | 12 +++++++++++
> lib/eventdev/rte_eventdev.h | 41 +++++++++++++++++++++++++++++++++----
> 3 files changed, 71 insertions(+), 4 deletions(-)
>
> diff --git a/lib/eventdev/eventdev_pmd.h b/lib/eventdev/eventdev_pmd.h
> index 6182749503..f19df98a7a 100644
> --- a/lib/eventdev/eventdev_pmd.h
> +++ b/lib/eventdev/eventdev_pmd.h
> @@ -341,6 +341,26 @@ typedef int (*eventdev_queue_setup_t)(struct rte_eventdev *dev,
> typedef void (*eventdev_queue_release_t)(struct rte_eventdev *dev,
> uint8_t queue_id);
>
> +/**
> + * Get an event queue attribute at runtime.
> + *
> + * @param dev
> + * Event device pointer
> + * @param queue_id
> + * Event queue index
> + * @param attr_id
> + * Event queue attribute id
> + * @param[out] attr_value
> + * Event queue attribute value
> + *
> + * @return
> + * - 0: Success.
> + * - <0: Error code on failure.
> + */
> +typedef int (*eventdev_queue_attr_get_t)(struct rte_eventdev *dev,
> + uint8_t queue_id, uint32_t attr_id,
> + uint32_t *attr_value);
> +
> /**
> * Set an event queue attribute at runtime.
> *
> @@ -1231,6 +1251,8 @@ struct eventdev_ops {
> /**< Set up an event queue. */
> eventdev_queue_release_t queue_release;
> /**< Release an event queue. */
> + eventdev_queue_attr_get_t queue_attr_get;
> + /**< Get an event queue attribute. */
> eventdev_queue_attr_set_t queue_attr_set;
> /**< Set an event queue attribute. */
>
> diff --git a/lib/eventdev/rte_eventdev.c b/lib/eventdev/rte_eventdev.c
> index 13c8af877e..37f0e54bf3 100644
> --- a/lib/eventdev/rte_eventdev.c
> +++ b/lib/eventdev/rte_eventdev.c
> @@ -838,6 +838,18 @@ rte_event_queue_attr_get(uint8_t dev_id, uint8_t queue_id, uint32_t attr_id,
>
> *attr_value = conf->schedule_type;
> break;
> + case RTE_EVENT_QUEUE_ATTR_WEIGHT:
> + *attr_value = RTE_EVENT_QUEUE_WEIGHT_LOWEST;
> + if (dev->dev_ops->queue_attr_get)
> + return (*dev->dev_ops->queue_attr_get)(
> + dev, queue_id, attr_id, attr_value);
> + break;
> + case RTE_EVENT_QUEUE_ATTR_AFFINITY:
> + *attr_value = RTE_EVENT_QUEUE_AFFINITY_LOWEST;
> + if (dev->dev_ops->queue_attr_get)
> + return (*dev->dev_ops->queue_attr_get)(
> + dev, queue_id, attr_id, attr_value);
> + break;
> default:
> return -EINVAL;
> };
> diff --git a/lib/eventdev/rte_eventdev.h b/lib/eventdev/rte_eventdev.h
> index 19710cd0c5..fa16fc5dcb 100644
> --- a/lib/eventdev/rte_eventdev.h
> +++ b/lib/eventdev/rte_eventdev.h
> @@ -222,8 +222,14 @@ struct rte_event;
>
> /* Event device capability bitmap flags */
> #define RTE_EVENT_DEV_CAP_QUEUE_QOS (1ULL << 0)
> -/**< Event scheduling prioritization is based on the priority associated with
> - * each event queue.
> +/**< Event scheduling prioritization is based on the priority and weight
> + * associated with each event queue. Events from a queue with highest priority
> + * is scheduled first. If the queues are of same priority, a queue with highest
> + * weight is selected. Subsequent schedules from an event port could see events
> + * from the same event queue if the queue is configured with an affinity count.
> + * Affinity count of a queue indicates the number of times, the subsequent
> + * schedule calls from an event port should use the same queue if the queue is
> + * non-empty.
Is this specifying something else than WRR scheduling for equal-priority
queues?
What is a schedule call? I must say I don't understand this description.
Is affinity the per-port batch size from the queue that is "next in
line" for an opportunity to be scheduled to a port?
> *
> * @see rte_event_queue_setup(), rte_event_queue_attr_set()
> */
> @@ -331,6 +337,26 @@ struct rte_event;
> * @see rte_event_port_link()
> */
>
> +/* Event queue scheduling weights */
> +#define RTE_EVENT_QUEUE_WEIGHT_HIGHEST 255
> +/**< Highest weight of an event queue
> + * @see rte_event_queue_attr_get(), rte_event_queue_attr_set()
> + */
> +#define RTE_EVENT_QUEUE_WEIGHT_LOWEST 0
> +/**< Lowest weight of an event queue
> + * @see rte_event_queue_attr_get(), rte_event_queue_attr_set()
> + */
> +
> +/* Event queue scheduling affinity */
> +#define RTE_EVENT_QUEUE_AFFINITY_HIGHEST 255
> +/**< Highest scheduling affinity of an event queue
> + * @see rte_event_queue_attr_get(), rte_event_queue_attr_set()
> + */
> +#define RTE_EVENT_QUEUE_AFFINITY_LOWEST 0
> +/**< Lowest scheduling affinity of an event queue
> + * @see rte_event_queue_attr_get(), rte_event_queue_attr_set()
> + */
> +
> /**
> * Get the total number of event devices that have been successfully
> * initialised.
> @@ -684,11 +710,18 @@ rte_event_queue_setup(uint8_t dev_id, uint8_t queue_id,
> * The schedule type of the queue.
> */
> #define RTE_EVENT_QUEUE_ATTR_SCHEDULE_TYPE 4
> -
> +/**
> + * The weight of the queue.
> + */
> +#define RTE_EVENT_QUEUE_ATTR_WEIGHT 5
> +/**
> + * Affinity of the queue.
> + */
> +#define RTE_EVENT_QUEUE_ATTR_AFFINITY 6
> /**
> * Maximum supported attribute ID.
> */
> -#define RTE_EVENT_QUEUE_ATTR_MAX RTE_EVENT_QUEUE_ATTR_SCHEDULE_TYPE
> +#define RTE_EVENT_QUEUE_ATTR_MAX RTE_EVENT_QUEUE_ATTR_AFFINITY
>
> /**
> * Get an attribute from a queue.
next prev parent reply other threads:[~2022-03-30 12:12 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-29 13:10 [PATCH 0/6] Extend and set event queue attributes at runtime Shijith Thotton
2022-03-29 13:11 ` [PATCH 1/6] eventdev: support to set " Shijith Thotton
2022-03-30 10:58 ` Van Haaren, Harry
2022-04-04 9:35 ` Shijith Thotton
2022-04-04 9:45 ` Van Haaren, Harry
2022-03-30 12:14 ` Mattias Rönnblom
2022-04-04 11:45 ` Shijith Thotton
2022-03-29 13:11 ` [PATCH 2/6] eventdev: add weight and affinity to queue attributes Shijith Thotton
2022-03-30 12:12 ` Mattias Rönnblom [this message]
2022-04-04 9:33 ` Shijith Thotton
2022-03-29 13:11 ` [PATCH 3/6] doc: announce change in event queue conf structure Shijith Thotton
2022-03-29 13:11 ` [PATCH 4/6] test/event: test cases to test runtime queue attribute Shijith Thotton
2022-03-29 13:11 ` [PATCH 5/6] event/cnxk: support to set runtime queue attributes Shijith Thotton
2022-03-30 11:05 ` Van Haaren, Harry
2022-04-04 7:59 ` Shijith Thotton
2022-03-29 13:11 ` [PATCH 6/6] common/cnxk: use lock when accessing mbox of SSO Shijith Thotton
2022-03-29 18:49 ` [PATCH 0/6] Extend and set event queue attributes at runtime Jerin Jacob
2022-03-30 10:52 ` Van Haaren, Harry
2022-04-04 7:57 ` Shijith Thotton
2022-04-05 5:40 ` [PATCH v2 " Shijith Thotton
2022-04-05 5:40 ` [PATCH v2 1/6] eventdev: support to set " Shijith Thotton
2022-05-09 12:43 ` Jerin Jacob
2022-04-05 5:40 ` [PATCH v2 2/6] eventdev: add weight and affinity to queue attributes Shijith Thotton
2022-05-09 12:46 ` Jerin Jacob
2022-04-05 5:41 ` [PATCH v2 3/6] doc: announce change in event queue conf structure Shijith Thotton
2022-05-09 12:47 ` Jerin Jacob
2022-05-15 10:24 ` [PATCH v3] " Shijith Thotton
2022-07-12 14:05 ` Jerin Jacob
2022-07-13 6:52 ` [EXT] " Pavan Nikhilesh Bhagavatula
2022-07-13 8:55 ` Mattias Rönnblom
2022-07-13 9:56 ` Pavan Nikhilesh Bhagavatula
2022-07-17 12:52 ` Thomas Monjalon
2022-04-05 5:41 ` [PATCH v2 4/6] test/event: test cases to test runtime queue attribute Shijith Thotton
2022-05-09 12:55 ` Jerin Jacob
2022-04-05 5:41 ` [PATCH v2 5/6] event/cnxk: support to set runtime queue attributes Shijith Thotton
2022-05-09 12:57 ` Jerin Jacob
2022-04-05 5:41 ` [PATCH v2 6/6] common/cnxk: use lock when accessing mbox of SSO Shijith Thotton
2022-04-11 11:07 ` [PATCH v2 0/6] Extend and set event queue attributes at runtime Shijith Thotton
2022-05-15 9:53 ` [PATCH v3 0/5] " Shijith Thotton
2022-05-15 9:53 ` [PATCH v3 1/5] eventdev: support to set " Shijith Thotton
2022-05-15 13:11 ` Mattias Rönnblom
2022-05-16 3:57 ` Shijith Thotton
2022-05-16 10:23 ` Mattias Rönnblom
2022-05-16 12:12 ` Shijith Thotton
2022-05-15 9:53 ` [PATCH v3 2/5] eventdev: add weight and affinity to queue attributes Shijith Thotton
2022-05-15 9:53 ` [PATCH v3 3/5] test/event: test cases to test runtime queue attribute Shijith Thotton
2022-05-15 9:53 ` [PATCH v3 4/5] common/cnxk: use lock when accessing mbox of SSO Shijith Thotton
2022-05-15 9:53 ` [PATCH v3 5/5] event/cnxk: support to set runtime queue attributes Shijith Thotton
2022-05-16 17:35 ` [PATCH v4 0/5] Extend and set event queue attributes at runtime Shijith Thotton
2022-05-16 17:35 ` [PATCH v4 1/5] eventdev: support to set " Shijith Thotton
2022-05-16 18:02 ` Jerin Jacob
2022-05-17 8:55 ` Mattias Rönnblom
2022-05-17 13:35 ` Jerin Jacob
2022-05-19 8:49 ` Ray Kinsella
2022-05-16 17:35 ` [PATCH v4 2/5] eventdev: add weight and affinity to queue attributes Shijith Thotton
2022-05-16 17:35 ` [PATCH v4 3/5] test/event: test cases to test runtime queue attribute Shijith Thotton
2022-05-16 17:35 ` [PATCH v4 4/5] common/cnxk: use lock when accessing mbox of SSO Shijith Thotton
2022-05-16 17:35 ` [PATCH v4 5/5] event/cnxk: support to set runtime queue attributes Shijith Thotton
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