From: "Eads, Gage" <gage.eads@intel.com>
To: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
"thomas.monjalon@6wind.com" <thomas.monjalon@6wind.com>,
"Richardson, Bruce" <bruce.richardson@intel.com>,
"Vangati, Narender" <narender.vangati@intel.com>,
"hemant.agrawal@nxp.com" <hemant.agrawal@nxp.com>
Subject: Re: [dpdk-dev] [RFC] [PATCH v2] libeventdev: event driven programming model framework for DPDK
Date: Mon, 17 Oct 2016 20:26:33 +0000 [thread overview]
Message-ID: <9184057F7FC11744A2107296B6B8EB1E01E18A80@FMSMSX108.amr.corp.intel.com> (raw)
In-Reply-To: <20161017041812.GA3543@localhost.localdomain>
> -----Original Message-----
> From: Jerin Jacob [mailto:jerin.jacob@caviumnetworks.com]
> Sent: Sunday, October 16, 2016 11:18 PM
> To: Eads, Gage <gage.eads@intel.com>
> Cc: dev@dpdk.org; thomas.monjalon@6wind.com; Richardson, Bruce
> <bruce.richardson@intel.com>; Vangati, Narender
> <narender.vangati@intel.com>; hemant.agrawal@nxp.com
> Subject: Re: [dpdk-dev] [RFC] [PATCH v2] libeventdev: event driven
> programming model framework for DPDK
>
> On Fri, Oct 14, 2016 at 03:00:57PM +0000, Eads, Gage wrote:
> > Thanks Jerin, this looks good. I've put a few notes/questions inline.
>
> Thanks Gage.
>
> >
> > > +
> > > +/**
> > > + * Get the device identifier for the named event device.
> > > + *
> > > + * @param name
> > > + * Event device name to select the event device identifier.
> > > + *
> > > + * @return
> > > + * Returns event device identifier on success.
> > > + * - <0: Failure to find named event device.
> > > + */
> > > +extern uint8_t
> > > +rte_event_dev_get_dev_id(const char *name);
> >
> > This return type should be int8_t, or some signed type, to support the failure
> case.
>
> Makes sense. I will change to int to make consistent with
> rte_cryptodev_get_dev_id()
>
> >
> > > +};
> > > +
> > > +/**
> > > + * Schedule one or more events in the event dev.
> > > + *
> > > + * An event dev implementation may define this is a NOOP, for
> > > instance if + * the event dev performs its scheduling in hardware.
> > > + *
> > > + * @param dev_id
> > > + * The identifier of the device.
> > > + */
> > > +extern void
> > > +rte_event_schedule(uint8_t dev_id);
> >
> > One idea: Have the function return the number of scheduled packets (or 0 for
> implementations that do scheduling in hardware). This could be a helpful
> diagnostic for the software scheduler.
>
> How about returning an implementation specific value ?
> Rather than defining certain function associated with returned value.
> Just to make sure it works with all HW/SW implementations. Something like
> below,
>
> /**
> * Schedule one or more events in the event dev.
> *
> * An event dev implementation may define this is a NOOP, for instance if
> * the event dev performs its scheduling in hardware.
> *
> * @param dev_id
> * The identifier of the device.
> * @return
> * Implementation specific value from the event driver for diagnostic purpose
> */
> extern int
> rte_event_schedule(uint8_t dev_id);
>
>
That's fine by me.
I also had a comment on the return value of rte_event_dev_info_get() in my previous email: "I'm wondering if this return type should be int, so we can return an error if the dev_id is invalid."
What do you think?
Thanks,
Gage
>
>
next prev parent reply other threads:[~2016-10-17 20:26 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-04 21:49 [dpdk-dev] [RFC] " Vangati, Narender
2016-10-05 7:24 ` Jerin Jacob
2016-10-07 10:40 ` Hemant Agrawal
2016-10-09 8:27 ` Jerin Jacob
2016-10-11 19:30 ` [dpdk-dev] [RFC] [PATCH v2] " Jerin Jacob
2016-10-14 4:14 ` Bill Fischofer
2016-10-14 9:26 ` Jerin Jacob
2016-10-14 10:30 ` Hemant Agrawal
2016-10-14 12:52 ` Jerin Jacob
2016-10-14 15:00 ` Eads, Gage
2016-10-17 4:18 ` Jerin Jacob
2016-10-17 20:26 ` Eads, Gage [this message]
2016-10-18 11:19 ` Jerin Jacob
2016-10-14 16:02 ` Bruce Richardson
2016-10-17 5:10 ` Jerin Jacob
2016-10-25 17:49 ` Jerin Jacob
2016-10-26 12:11 ` Van Haaren, Harry
2016-10-26 12:24 ` Jerin Jacob
2016-10-26 12:54 ` Bruce Richardson
2016-10-28 3:01 ` Jerin Jacob
2016-10-28 8:36 ` Bruce Richardson
2016-10-28 9:06 ` Jerin Jacob
2016-11-02 11:25 ` Jerin Jacob
2016-11-02 11:35 ` Bruce Richardson
2016-11-02 13:09 ` Jerin Jacob
2016-11-02 13:56 ` Bruce Richardson
2016-11-02 14:54 ` Jerin Jacob
2016-10-26 18:37 ` Vincent Jardin
2016-10-28 13:10 ` Van Haaren, Harry
2016-11-02 10:47 ` Jerin Jacob
2016-11-02 11:45 ` Bruce Richardson
2016-11-02 12:34 ` Jerin Jacob
2016-10-26 12:43 ` Bruce Richardson
2016-10-26 17:30 ` Jerin Jacob
2016-10-28 13:48 ` Van Haaren, Harry
2016-10-28 14:16 ` Bruce Richardson
2016-11-02 8:59 ` Jerin Jacob
2016-11-02 8:06 ` Jerin Jacob
2016-11-02 11:48 ` Bruce Richardson
2016-11-02 12:57 ` Jerin Jacob
2016-10-14 15:00 Francois Ozog
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