From: "Van Haaren, Harry" <harry.van.haaren@intel.com>
To: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
"Richardson, Bruce" <bruce.richardson@intel.com>
Subject: Re: [dpdk-dev] [PATCH v2 07/15] event/sw: add support for event queues
Date: Mon, 6 Feb 2017 10:25:18 +0000 [thread overview]
Message-ID: <E923DB57A917B54B9182A2E928D00FA6129EE477@IRSMSX102.ger.corp.intel.com> (raw)
In-Reply-To: <20170206092509.GF25242@localhost.localdomain>
> -----Original Message-----
> From: Jerin Jacob [mailto:jerin.jacob@caviumnetworks.com]
> Sent: Monday, February 6, 2017 9:25 AM
> To: Van Haaren, Harry <harry.van.haaren@intel.com>
> Cc: dev@dpdk.org; Richardson, Bruce <bruce.richardson@intel.com>
> Subject: Re: [PATCH v2 07/15] event/sw: add support for event queues
>
> On Tue, Jan 31, 2017 at 04:14:25PM +0000, Harry van Haaren wrote:
> > From: Bruce Richardson <bruce.richardson@intel.com>
> >
> > Add in the data structures for the event queues, and the eventdev
> > functions to create and destroy those queues.
> >
> > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> > Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
> > ---
> > drivers/event/sw/iq_ring.h | 176 ++++++++++++++++++++++++++++++++++++++++++++
> > drivers/event/sw/sw_evdev.c | 158 +++++++++++++++++++++++++++++++++++++++
> > drivers/event/sw/sw_evdev.h | 75 +++++++++++++++++++
> > 3 files changed, 409 insertions(+)
> > create mode 100644 drivers/event/sw/iq_ring.h
> >
> > + */
> > +
> > +/*
> > + * Ring structure definitions used for the internal ring buffers of the
> > + * SW eventdev implementation. These are designed for single-core use only.
> > + */
>
> If I understand it correctly, IQ and QE rings are single producer and
> single consumer rings. By the specification, multiple producers through
> multiple ports can enqueue to the event queues at a time.Does SW implementation
> support that? or am I missing something here?
You're right that the IQ and QE rings are Single Producer, Single Consumer rings. More specifically, the QE is a ring for sending rte_event structs between cores, while the IQ ring is optimized for internal use in the scheduler core - and should not be used to send events between cores. Note that the design of the SW scheduler includes a central core for performing scheduling.
In other works, the QE rings transfer events from the worker core to the scheduler - and the scheduler pushes the events into what you call the "event queues" (aka, the atomic/ordered queue itself). These "event queues" are IQ instances. On egress from the scheduler, the event passes through a QE ring to the worker.
The result is that despite that only SP/SC rings are used, multiple workers can enqueue to any event queue.
next prev parent reply other threads:[~2017-02-06 10:25 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1484580885-148524-1-git-send-email-harry.van.haaren@intel.com>
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 00/15] next-eventdev: event/sw software eventdev Harry van Haaren
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 01/15] eventdev: remove unneeded dependencies Harry van Haaren
2017-02-06 8:12 ` Jerin Jacob
2017-02-08 14:35 ` Jerin Jacob
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 02/15] eventdev: add APIs for extended stats Harry van Haaren
2017-02-06 8:22 ` Jerin Jacob
2017-02-06 10:37 ` Van Haaren, Harry
2017-02-07 6:24 ` Jerin Jacob
2017-02-09 14:04 ` Van Haaren, Harry
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 03/15] event/sw: add new software-only eventdev driver Harry van Haaren
2017-02-06 8:32 ` Jerin Jacob
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 04/15] event/sw: add device capabilities function Harry van Haaren
2017-02-06 8:34 ` Jerin Jacob
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 05/15] event/sw: add configure function Harry van Haaren
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 06/15] event/sw: add fns to return default port/queue config Harry van Haaren
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 07/15] event/sw: add support for event queues Harry van Haaren
2017-02-06 9:25 ` Jerin Jacob
2017-02-06 10:25 ` Van Haaren, Harry [this message]
2017-02-07 6:58 ` Jerin Jacob
2017-02-07 9:58 ` Van Haaren, Harry
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 08/15] event/sw: add support for event ports Harry van Haaren
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 09/15] event/sw: add support for linking queues to ports Harry van Haaren
2017-02-06 9:37 ` Jerin Jacob
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 10/15] event/sw: add worker core functions Harry van Haaren
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 11/15] event/sw: add scheduling logic Harry van Haaren
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 12/15] event/sw: add start stop and close functions Harry van Haaren
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 13/15] event/sw: add dump function for easier debugging Harry van Haaren
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 14/15] event/sw: add xstats support Harry van Haaren
2017-01-31 16:14 ` [dpdk-dev] [PATCH v2 15/15] app/test: add unit tests for SW eventdev driver Harry van Haaren
2017-02-08 10:23 ` Jerin Jacob
2017-02-08 10:44 ` Van Haaren, Harry
2017-02-13 10:28 ` Jerin Jacob
2017-02-13 10:45 ` Bruce Richardson
2017-02-13 11:21 ` Jerin Jacob
2017-02-08 18:02 ` Nipun Gupta
2017-02-13 11:37 ` Jerin Jacob
2017-02-11 9:13 ` Jerin Jacob
2017-02-06 8:07 ` [dpdk-dev] [PATCH v2 00/15] next-eventdev: event/sw software eventdev Jerin Jacob
2017-02-06 10:14 ` Van Haaren, Harry
2017-02-17 14:53 ` [dpdk-dev] [PATCH v3 00/17] " Harry van Haaren
2017-02-17 14:53 ` [dpdk-dev] [PATCH v3 01/17] eventdev: fix API docs and test for timeout ticks Harry van Haaren
2017-02-20 15:22 ` Mcnamara, John
2017-03-06 10:33 ` Jerin Jacob
2017-03-10 15:24 ` Van Haaren, Harry
2017-03-08 10:35 ` [dpdk-dev] [PATCH] eventdev: improve API docs " Harry van Haaren
2017-03-13 8:48 ` Jerin Jacob
2017-02-17 14:53 ` [dpdk-dev] [PATCH v3 02/17] eventdev: increase size of enq deq conf variables Harry van Haaren
2017-02-19 12:05 ` Jerin Jacob
2017-02-17 14:53 ` [dpdk-dev] [PATCH v3 03/17] app/test: eventdev link all queues before start Harry van Haaren
2017-02-19 12:09 ` Jerin Jacob
2017-02-17 14:53 ` [dpdk-dev] [PATCH v3 04/17] eventdev: add APIs for extended stats Harry van Haaren
2017-02-19 12:32 ` Jerin Jacob
2017-02-20 12:12 ` Van Haaren, Harry
2017-02-20 12:34 ` Jerin Jacob
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 05/17] event/sw: add new software-only eventdev driver Harry van Haaren
2017-02-19 12:37 ` Jerin Jacob
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 06/17] event/sw: add device capabilities function Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 07/17] event/sw: add configure function Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 08/17] event/sw: add fns to return default port/queue config Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 09/17] event/sw: add support for event queues Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 10/17] event/sw: add support for event ports Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 11/17] event/sw: add support for linking queues to ports Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 12/17] event/sw: add worker core functions Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 13/17] event/sw: add scheduling logic Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 14/17] event/sw: add start stop and close functions Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 15/17] event/sw: add dump function for easier debugging Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 16/17] event/sw: add xstats support Harry van Haaren
2017-02-17 14:54 ` [dpdk-dev] [PATCH v3 17/17] app/test: add unit tests for SW eventdev driver Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 00/17] next-eventdev: event/sw software eventdev Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 01/17] eventdev: increase size of enq deq conf variables Harry van Haaren
2017-03-13 8:47 ` Jerin Jacob
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 02/17] app/test: eventdev link all queues before start Harry van Haaren
2017-03-20 4:46 ` Jerin Jacob
2017-03-23 10:18 ` Jerin Jacob
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 03/17] test/eventdev: rework timeout ticks test Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 04/17] eventdev: add APIs for extended stats Harry van Haaren
2017-03-17 12:22 ` Jerin Jacob
2017-03-23 10:20 ` Jerin Jacob
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 05/17] event/sw: add new software-only eventdev driver Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 06/17] event/sw: add device capabilities function Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 07/17] event/sw: add configure function Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 08/17] event/sw: add fns to return default port/queue config Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 09/17] event/sw: add support for event queues Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 10/17] event/sw: add support for event ports Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 11/17] event/sw: add support for linking queues to ports Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 12/17] event/sw: add worker core functions Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 13/17] event/sw: add scheduling logic Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 14/17] event/sw: add start stop and close functions Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 15/17] event/sw: add dump function for easier debugging Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 16/17] event/sw: add xstats support Harry van Haaren
2017-03-10 19:43 ` [dpdk-dev] [PATCH v4 17/17] app/test: add unit tests for SW eventdev driver Harry van Haaren
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