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From: Bruce Richardson <bruce.richardson@intel.com>
To: Jerin Jacob <jerinjacobk@gmail.com>
Cc: <dev@dpdk.org>, <jerinj@marvell.com>,
	<mattias.ronnblom@ericsson.com>, <abdullah.sevincer@intel.com>,
	<sachin.saxena@oss.nxp.com>, <hemant.agrawal@nxp.com>,
	<pbhagavatula@marvell.com>, <pravin.pathak@intel.com>
Subject: Re: [PATCH v3 10/11] eventdev: clarify docs on event object fields and op types
Date: Tue, 20 Feb 2024 18:03:32 +0000	[thread overview]
Message-ID: <ZdTpdCWJBrycnvTR@bricha3-mobl1.ger.corp.intel.com> (raw)
In-Reply-To: <CALBAE1Mv_oiZ5VRbjRE7649+u5kSpg8QVa1Qzs4_-iaB3nVRYA@mail.gmail.com>

On Fri, Feb 09, 2024 at 02:44:04PM +0530, Jerin Jacob wrote:
> On Fri, Feb 2, 2024 at 6:11 PM Bruce Richardson
> <bruce.richardson@intel.com> wrote:
> >
> > Clarify the meaning of the NEW, FORWARD and RELEASE event types.
> > For the fields in "rte_event" struct, enhance the comments on each to
> > clarify the field's use, and whether it is preserved between enqueue and
> > dequeue, and it's role, if any, in scheduling.
> >
> > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> > ---
> > V3: updates following review
> > ---
> >  lib/eventdev/rte_eventdev.h | 161 +++++++++++++++++++++++++-----------
> >  1 file changed, 111 insertions(+), 50 deletions(-)
> >
> > diff --git a/lib/eventdev/rte_eventdev.h b/lib/eventdev/rte_eventdev.h
> > index 8d72765ae7..58219e027e 100644
> > --- a/lib/eventdev/rte_eventdev.h
> > +++ b/lib/eventdev/rte_eventdev.h
> > @@ -1463,47 +1463,54 @@ struct rte_event_vector {
> >
> >  /* Event enqueue operations */
> >  #define RTE_EVENT_OP_NEW                0
> > -/**< The event producers use this operation to inject a new event to the
> > - * event device.
> > +/**< The @ref rte_event.op field must be set to this operation type to inject a new event,
> > + * i.e. one not previously dequeued, into the event device, to be scheduled
> > + * for processing.
> >   */
> >  #define RTE_EVENT_OP_FORWARD            1
> > -/**< The CPU use this operation to forward the event to different event queue or
> > - * change to new application specific flow or schedule type to enable
> > - * pipelining.
> > +/**< The application must set the @ref rte_event.op field to this operation type to return a
> > + * previously dequeued event to the event device to be scheduled for further processing.
> >   *
> > - * This operation must only be enqueued to the same port that the
> > + * This event *must* be enqueued to the same port that the
> >   * event to be forwarded was dequeued from.
> > + *
> > + * The event's fields, including (but not limited to) flow_id, scheduling type,
> > + * destination queue, and event payload e.g. mbuf pointer, may all be updated as
> > + * desired by the application, but the @ref rte_event.impl_opaque field must
> > + * be kept to the same value as was present when the event was dequeued.
> >   */
> >  #define RTE_EVENT_OP_RELEASE            2
> >  /**< Release the flow context associated with the schedule type.
> >   *
> > - * If current flow's scheduler type method is *RTE_SCHED_TYPE_ATOMIC*
> > - * then this function hints the scheduler that the user has completed critical
> > - * section processing in the current atomic context.
> > - * The scheduler is now allowed to schedule events from the same flow from
> > - * an event queue to another port. However, the context may be still held
> > - * until the next rte_event_dequeue_burst() call, this call allows but does not
> > - * force the scheduler to release the context early.
> > - *
> > - * Early atomic context release may increase parallelism and thus system
> > + * If current flow's scheduler type method is @ref RTE_SCHED_TYPE_ATOMIC
> > + * then this operation type hints the scheduler that the user has completed critical
> > + * section processing for this event in the current atomic context, and that the
> > + * scheduler may unlock any atomic locks held for this event.
> > + * If this is the last event from an atomic flow, i.e. all flow locks are released,
> 
> 
> Similar comment as other email
> [Jerin] When there are multiple atomic events dequeue from @ref
> rte_event_dequeue_burst()
> for the same event queue, and it has same flow id then the lock is ....
> 
> [Mattias]
> Yes, or maybe describing the whole lock/unlock state.
> 
> "The conceptual per-queue-per-flow lock is in a locked state as long
> (and only as long) as one or more events pertaining to that flow were
> scheduled to the port in question, but are not yet released."
> 
> Maybe it needs to be more meaty, describing what released means. I don't
> have the full context of the documentation in my head when I'm writing this.
> 
Rather than trying to explain all again, I'm just going to put inline here a
cross-reference to the text on RTE_EVENT_TYPE_ATOMIC.

/Bruce

  parent reply	other threads:[~2024-02-20 18:04 UTC|newest]

Thread overview: 123+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-18 13:45 [PATCH v1 0/7] improve eventdev API specification/documentation Bruce Richardson
2024-01-18 13:45 ` [PATCH v1 1/7] eventdev: improve doxygen introduction text Bruce Richardson
2024-01-18 13:45 ` [PATCH v1 2/7] eventdev: move text on driver internals to proper section Bruce Richardson
2024-01-18 13:45 ` [PATCH v1 3/7] eventdev: update documentation on device capability flags Bruce Richardson
2024-01-18 13:45 ` [PATCH v1 4/7] eventdev: cleanup doxygen comments on info structure Bruce Richardson
2024-01-18 13:49   ` Bruce Richardson
2024-01-18 13:45 ` [PATCH v1 5/7] eventdev: improve function documentation for query fns Bruce Richardson
2024-01-18 13:45 ` [PATCH v1 6/7] eventdev: improve doxygen comments on configure struct Bruce Richardson
2024-01-18 13:45 ` [PATCH v1 7/7] eventdev: fix documentation for counting single-link ports Bruce Richardson
2024-01-19 17:43 ` [PATCH v2 00/11] improve eventdev API specification/documentation Bruce Richardson
2024-01-19 17:43   ` [PATCH v2 01/11] eventdev: improve doxygen introduction text Bruce Richardson
2024-01-23  8:57     ` Mattias Rönnblom
2024-01-23  9:06       ` Bruce Richardson
2024-01-24 11:37         ` Mattias Rönnblom
2024-01-31 13:45       ` Bruce Richardson
2024-01-19 17:43   ` [PATCH v2 02/11] eventdev: move text on driver internals to proper section Bruce Richardson
2024-01-19 17:43   ` [PATCH v2 03/11] eventdev: update documentation on device capability flags Bruce Richardson
2024-01-23  9:18     ` Mattias Rönnblom
2024-01-23  9:34       ` Bruce Richardson
2024-01-31 14:09       ` Bruce Richardson
2024-02-02  8:58         ` Mattias Rönnblom
2024-02-02 11:20           ` Bruce Richardson
2024-01-19 17:43   ` [PATCH v2 04/11] eventdev: cleanup doxygen comments on info structure Bruce Richardson
2024-01-23  9:35     ` Mattias Rönnblom
2024-01-23  9:43       ` Bruce Richardson
2024-01-24 11:51         ` Mattias Rönnblom
2024-01-31 14:37           ` Bruce Richardson
2024-02-02  9:24             ` Mattias Rönnblom
2024-02-02 10:30               ` Bruce Richardson
2024-01-19 17:43   ` [PATCH v2 05/11] eventdev: improve function documentation for query fns Bruce Richardson
2024-01-23  9:40     ` Mattias Rönnblom
2024-01-19 17:43   ` [PATCH v2 06/11] eventdev: improve doxygen comments on configure struct Bruce Richardson
2024-01-23  9:46     ` Mattias Rönnblom
2024-01-31 16:15       ` Bruce Richardson
2024-01-19 17:43   ` [PATCH v2 07/11] eventdev: fix documentation for counting single-link ports Bruce Richardson
2024-01-23  9:48     ` Mattias Rönnblom
2024-01-23  9:56       ` Bruce Richardson
2024-01-31 16:18         ` Bruce Richardson
2024-01-19 17:43   ` [PATCH v2 08/11] eventdev: improve doxygen comments on config fns Bruce Richardson
2024-01-23 10:00     ` Mattias Rönnblom
2024-01-23 10:07       ` Bruce Richardson
2024-01-19 17:43   ` [PATCH v2 09/11] eventdev: improve doxygen comments for control APIs Bruce Richardson
2024-01-23 10:10     ` Mattias Rönnblom
2024-01-19 17:43   ` [PATCH v2 10/11] eventdev: RFC clarify comments on scheduling types Bruce Richardson
2024-01-23 16:19     ` Mattias Rönnblom
2024-01-24 11:21       ` Bruce Richardson
2024-01-31 17:54       ` Bruce Richardson
2024-01-19 17:43   ` [PATCH v2 11/11] eventdev: RFC clarify docs on event object fields Bruce Richardson
2024-01-24 11:34     ` Mattias Rönnblom
2024-02-01 16:59       ` Bruce Richardson
2024-02-02  9:38         ` Mattias Rönnblom
2024-02-02 11:33           ` Bruce Richardson
2024-02-02 12:02             ` Bruce Richardson
2024-02-01 17:02       ` Bruce Richardson
2024-02-02  9:14         ` Bruce Richardson
2024-02-02  9:22         ` Jerin Jacob
2024-02-02  9:36           ` Bruce Richardson
2024-02-02  9:45         ` Mattias Rönnblom
2024-02-02 10:32           ` Bruce Richardson
2024-02-01  9:35     ` Bruce Richardson
2024-02-01 15:00       ` Jerin Jacob
2024-02-01 15:24         ` Bruce Richardson
2024-02-01 16:20           ` Jerin Jacob
2024-02-02 12:39   ` [PATCH v3 00/11] improve eventdev API specification/documentation Bruce Richardson
2024-02-02 12:39     ` [PATCH v3 01/11] eventdev: improve doxygen introduction text Bruce Richardson
2024-02-07 10:14       ` Jerin Jacob
2024-02-08  9:50         ` Mattias Rönnblom
2024-02-09  8:43           ` Jerin Jacob
2024-02-10  7:24             ` Mattias Rönnblom
2024-02-20 16:28               ` Bruce Richardson
2024-02-20 16:33         ` Bruce Richardson
2024-02-02 12:39     ` [PATCH v3 02/11] eventdev: move text on driver internals to proper section Bruce Richardson
2024-02-02 12:39     ` [PATCH v3 03/11] eventdev: update documentation on device capability flags Bruce Richardson
2024-02-07 10:30       ` Jerin Jacob
2024-02-20 16:42         ` Bruce Richardson
2024-02-02 12:39     ` [PATCH v3 04/11] eventdev: cleanup doxygen comments on info structure Bruce Richardson
2024-02-02 12:39     ` [PATCH v3 05/11] eventdev: improve function documentation for query fns Bruce Richardson
2024-02-02 12:39     ` [PATCH v3 06/11] eventdev: improve doxygen comments on configure struct Bruce Richardson
2024-02-02 12:39     ` [PATCH v3 07/11] eventdev: improve doxygen comments on config fns Bruce Richardson
2024-02-02 12:39     ` [PATCH v3 08/11] eventdev: improve doxygen comments for control APIs Bruce Richardson
2024-02-02 12:39     ` [PATCH v3 09/11] eventdev: improve comments on scheduling types Bruce Richardson
2024-02-08  9:18       ` Jerin Jacob
2024-02-08 10:04         ` Mattias Rönnblom
2024-02-20 17:23           ` Bruce Richardson
2024-02-02 12:39     ` [PATCH v3 10/11] eventdev: clarify docs on event object fields and op types Bruce Richardson
2024-02-09  9:14       ` Jerin Jacob
2024-02-20 17:39         ` Bruce Richardson
2024-02-21  9:31           ` Jerin Jacob
2024-02-21 10:28             ` Bruce Richardson
2024-02-20 17:50         ` Bruce Richardson
2024-02-20 18:03         ` Bruce Richardson [this message]
2024-02-02 12:39     ` [PATCH v3 11/11] eventdev: drop comment for anon union from doxygen Bruce Richardson
2024-02-21 10:32   ` [PATCH v4 00/12] improve eventdev API specification/documentation Bruce Richardson
2024-02-21 10:32     ` [PATCH v4 01/12] eventdev: improve doxygen introduction text Bruce Richardson
2024-02-26  4:51       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-26  9:59         ` Bruce Richardson
2024-02-29 16:13           ` Jerin Jacob
2024-02-21 10:32     ` [PATCH v4 02/12] eventdev: move text on driver internals to proper section Bruce Richardson
2024-02-26  5:01       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-21 10:32     ` [PATCH v4 03/12] eventdev: update documentation on device capability flags Bruce Richardson
2024-02-26  5:07       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-21 10:32     ` [PATCH v4 04/12] eventdev: cleanup doxygen comments on info structure Bruce Richardson
2024-02-26  5:18       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-21 10:32     ` [PATCH v4 05/12] eventdev: improve function documentation for query fns Bruce Richardson
2024-02-26  5:18       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-21 10:32     ` [PATCH v4 06/12] eventdev: improve doxygen comments on configure struct Bruce Richardson
2024-02-26  6:36       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-21 10:32     ` [PATCH v4 07/12] eventdev: improve doxygen comments on config fns Bruce Richardson
2024-02-26  6:43       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-26  6:44         ` Pavan Nikhilesh Bhagavatula
2024-02-21 10:32     ` [PATCH v4 08/12] eventdev: improve doxygen comments for control APIs Bruce Richardson
2024-02-26  6:44       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-21 10:32     ` [PATCH v4 09/12] eventdev: improve comments on scheduling types Bruce Richardson
2024-02-26  6:49       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-21 10:32     ` [PATCH v4 10/12] eventdev: clarify docs on event object fields and op types Bruce Richardson
2024-02-26  6:52       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-21 10:32     ` [PATCH v4 11/12] eventdev: drop comment for anon union from doxygen Bruce Richardson
2024-02-26  6:52       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-02-21 10:32     ` [PATCH v4 12/12] eventdev: fix doxygen processing of event vector struct Bruce Richardson
2024-02-26  6:53       ` [EXT] " Pavan Nikhilesh Bhagavatula
2024-03-04 15:35       ` Thomas Monjalon
2024-03-04 15:49         ` Bruce Richardson
2024-02-23 12:36     ` [PATCH v4 00/12] improve eventdev API specification/documentation Jerin Jacob

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