From: Bruce Richardson <bruce.richardson@intel.com>
To: "Mattias Rönnblom" <hofors@lysator.liu.se>
Cc: Jerin Jacob <jerinjacobk@gmail.com>, <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 01/11] eventdev: improve doxygen introduction text
Date: Tue, 20 Feb 2024 16:28:27 +0000 [thread overview]
Message-ID: <ZdTTKxBSmQR8EPhG@bricha3-mobl1.ger.corp.intel.com> (raw)
In-Reply-To: <381c64e4-4d45-44ee-8fa5-433c44b38fc0@lysator.liu.se>
On Sat, Feb 10, 2024 at 08:24:29AM +0100, Mattias Rönnblom wrote:
> On 2024-02-09 09:43, Jerin Jacob wrote:
> > On Thu, Feb 8, 2024 at 3:20 PM Mattias Rönnblom <hofors@lysator.liu.se> wrote:
> > >
> > > On 2024-02-07 11:14, Jerin Jacob wrote:
> > > > On Fri, Feb 2, 2024 at 7:29 PM Bruce Richardson
> > > > <bruce.richardson@intel.com> wrote:
> > > > >
> > > > > Make some textual improvements to the introduction to eventdev and event
> > > > > devices in the eventdev header file. This text appears in the doxygen
> > > > > output for the header file, and introduces the key concepts, for
> > > > > example: events, event devices, queues, ports and scheduling.
> > > > >
> > > > > This patch makes the following improvements:
> > > > > * small textual fixups, e.g. correcting use of singular/plural
> > > > > * rewrites of some sentences to improve clarity
> > > > > * using doxygen markdown to split the whole large block up into
> > > > > sections, thereby making it easier to read.
> > > > >
> > > > > No large-scale changes are made, and blocks are not reordered
> > > > >
> > > > > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> > > >
> > > > Thanks Bruce, While you are cleaning up, Please add following or
> > > > similar change to fix for not properly
> > > > parsing the struct rte_event_vector. i.e it is coming as global
> > > > variables in html files.
> > > >
> > > > l[dpdk.org] $ git diff
> > > > diff --git a/lib/eventdev/rte_eventdev.h b/lib/eventdev/rte_eventdev.h
> > > > index e31c927905..ce4a195a8f 100644
> > > > --- a/lib/eventdev/rte_eventdev.h
> > > > +++ b/lib/eventdev/rte_eventdev.h
> > > > @@ -1309,9 +1309,9 @@ struct rte_event_vector {
> > > > */
> > > > struct {
> > > > uint16_t port;
> > > > - /* Ethernet device port id. */
> > > > + /**< Ethernet device port id. */
> > > > uint16_t queue;
> > > > - /* Ethernet device queue id. */
> > > > + /**< Ethernet device queue id. */
> > > > };
> > > > };
> > > > /**< Union to hold common attributes of the vector array. */
> > > > @@ -1340,7 +1340,11 @@ struct rte_event_vector {
> > > > * vector array can be an array of mbufs or pointers or opaque u64
> > > > * values.
> > > > */
> > > > +#ifndef __DOXYGEN__
> > > > } __rte_aligned(16);
> > > > +#else
> > > > +};
> > > > +#endif
> > > >
> > > > /* Scheduler type definitions */
> > > > #define RTE_SCHED_TYPE_ORDERED 0
> > > >
> > > > >
> > > > > ---
> > > > > V3: reworked following feedback from Mattias
> > > > > ---
> > > > > lib/eventdev/rte_eventdev.h | 132 ++++++++++++++++++++++--------------
> > > > > 1 file changed, 81 insertions(+), 51 deletions(-)
> > > > >
> > > > > diff --git a/lib/eventdev/rte_eventdev.h b/lib/eventdev/rte_eventdev.h
> > > > > index ec9b02455d..a741832e8e 100644
> > > > > --- a/lib/eventdev/rte_eventdev.h
> > > > > +++ b/lib/eventdev/rte_eventdev.h
> > > > > @@ -12,25 +12,33 @@
> > > > > * @file
> > > > > *
> > > > > * RTE Event Device API
> > > > > + * ====================
> > > > > *
> > > > > - * In a polling model, lcores poll ethdev ports and associated rx queues
> > > > > - * directly to look for packet. In an event driven model, by contrast, lcores
> > > > > - * call the scheduler that selects packets for them based on programmer
> > > > > - * specified criteria. Eventdev library adds support for event driven
> > > > > - * programming model, which offer applications automatic multicore scaling,
> > > > > - * dynamic load balancing, pipelining, packet ingress order maintenance and
> > > > > - * synchronization services to simplify application packet processing.
> > > > > + * In a traditional run-to-completion application model, lcores pick up packets
> > > >
> > > > Can we keep it is as poll mode instead of run-to-completion as event mode also
> > > > supports run to completion by having dequuee() and then Tx.
> > > >
> > >
> > > A "traditional" DPDK app is both polling and run-to-completion. You
> > > could always add "polling" somewhere, but "run-to-completion" in that
> > > context serves a purpose, imo.
> >
> > Yeah. Some event devices can actually sleep to save power if packet is
> > not present(using WFE in arm64 world).
> >
>
> Sure, and I believe you can do that with certain Ethdevs as well. Also, you
> can also use interrupts. So polling/energy-efficient polling
> (wfe/umwait)/interrupts aren't really a differentiator between Eventdev and
> "raw" Ethdev.
>
> > I think, We can be more specific then, like
> >
> > In a traditional run-to-completion application model where packet are
> > dequeued from NIC RX queues, .......
> >
>
> "In a traditional DPDK application model, the application polls Ethdev port
> RX queues to look for work, and processing is done in a run-to-completion
> manner, after which the packets are transmitted on a Ethdev TX queue. Load
> is distributed by statically assigning ports and queues to lcores, and NIC
> receive-side scaling (RSS, or similar) is employed to distribute network
> flows (and thus work) on the same port across multiple RX queues."
>
> I don̈́'t know if that's too much.
>
Looks fine to me, I'll just use that text in V4.
next prev parent reply other threads:[~2024-02-20 16:28 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 [this message]
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
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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