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From: "Carrillo, Erik G" <erik.g.carrillo@intel.com>
To: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>, "Jerin Jacob
 Kollanukkaran" <jerinj@marvell.com>, "Van Haaren, Harry"
 <harry.van.haaren@intel.com>, "Rao, Nikhil" <nikhil.rao@intel.com>, "Gujjar,
 Abhinandan S" <abhinandan.gujjar@intel.com>, "Mcnamara, John"
 <john.mcnamara@intel.com>
CC: "dev@dpdk.org" <dev@dpdk.org>
Thread-Topic: [dpdk-dev] [PATCH v3 3/3] doc: add notes about eventdev
 producer consumer dependency
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Date: Wed, 13 Mar 2019 22:22:21 +0000
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References: <20190227200019.1085-1-pbhagavatula@marvell.com>
 <20190312204037.16141-1-pbhagavatula@marvell.com>
 <20190312204037.16141-3-pbhagavatula@marvell.com>
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Subject: Re: [dpdk-dev] [PATCH v3 3/3] doc: add notes about eventdev
 producer consumer dependency
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> -----Original Message-----
> From: Pavan Nikhilesh Bhagavatula [mailto:pbhagavatula@marvell.com]
> Sent: Tuesday, March 12, 2019 3:41 PM
> To: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Van Haaren, Harry
> <harry.van.haaren@intel.com>; Rao, Nikhil <nikhil.rao@intel.com>; Carrill=
o,
> Erik G <erik.g.carrillo@intel.com>; Gujjar, Abhinandan S
> <abhinandan.gujjar@intel.com>; Mcnamara, John
> <john.mcnamara@intel.com>
> Cc: dev@dpdk.org; Pavan Nikhilesh Bhagavatula
> <pbhagavatula@marvell.com>
> Subject: [dpdk-dev] [PATCH v3 3/3] doc: add notes about eventdev producer
> consumer dependency
>=20
> From: Pavan Nikhilesh <pbhagavatula@marvell.com>
>=20
> EventDev i.e consumer needs to be started before starting the event
> producers.
> Update documentation of EventDev and EventDev adapters.
>=20
> Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
> ---
>  v2 Changes: Add Notes to doxygen API.
>=20
>  doc/guides/prog_guide/event_crypto_adapter.rst      | 5 +++++
>  doc/guides/prog_guide/event_ethernet_rx_adapter.rst | 5 +++++
>  doc/guides/prog_guide/event_timer_adapter.rst       | 5 +++++
>  doc/guides/prog_guide/eventdev.rst                  | 5 +++++
>  lib/librte_eventdev/rte_event_crypto_adapter.h      | 4 ++++
>  lib/librte_eventdev/rte_event_eth_rx_adapter.h      | 4 ++++
>  lib/librte_eventdev/rte_event_timer_adapter.h       | 4 ++++
>  7 files changed, 32 insertions(+)
>=20
> diff --git a/doc/guides/prog_guide/event_crypto_adapter.rst
> b/doc/guides/prog_guide/event_crypto_adapter.rst
> index 9fe09c805..1e3eb7139 100644
> --- a/doc/guides/prog_guide/event_crypto_adapter.rst
> +++ b/doc/guides/prog_guide/event_crypto_adapter.rst
> @@ -286,6 +286,11 @@ service function if one exists.
>=20
>          rte_event_crypto_adapter_start(id, mode);
>=20
> +.. Note::
> +
> +         The eventdev to which the event_crypto_adapter is connected nee=
ds
> to
> +         be started before calling rte_event_crypto_adapter_start().
> +
>  Get adapter statistics
>  ~~~~~~~~~~~~~~~~~~~~~~
>=20
> diff --git a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> index 0166bb45d..e95529974 100644
> --- a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> +++ b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> @@ -135,6 +135,11 @@ This function calls the start callbacks of the event=
dev
> PMDs for hardware based  eventdev-ethdev connections and
> ``rte_service_run_state_set()`` to enable the  service function if one ex=
ists.
>=20
> +.. Note::
> +
> +         The eventdev to which the event_eth_rx_adapter is connected nee=
ds
> to
> +         be started before calling rte_event_eth_rx_adapter_start().
> +
>  Getting Adapter Statistics
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~
>=20
> diff --git a/doc/guides/prog_guide/event_timer_adapter.rst
> b/doc/guides/prog_guide/event_timer_adapter.rst
> index 3b4446ee9..eb195ebd4 100644
> --- a/doc/guides/prog_guide/event_timer_adapter.rst
> +++ b/doc/guides/prog_guide/event_timer_adapter.rst
> @@ -179,6 +179,11 @@ running the event timer adapter. This function calls
> the start entry points  defined by eventdev PMDs for hardware
> implementations or puts a service  component into the running state in th=
e
> software implementation.
>=20
> +.. Note::
> +
> +         The eventdev to which the event_timer_adapter is connected need=
s
> to
> +         be started before calling rte_event_timer_adapter_start().
> +
>  Arming Event Timers
>  ~~~~~~~~~~~~~~~~~~~
>=20
> diff --git a/doc/guides/prog_guide/eventdev.rst
> b/doc/guides/prog_guide/eventdev.rst
> index 8fcae5469..dcdfeb75e 100644
> --- a/doc/guides/prog_guide/eventdev.rst
> +++ b/doc/guides/prog_guide/eventdev.rst
> @@ -296,6 +296,11 @@ eventdev.
>=20
>          int err =3D rte_event_dev_start(dev_id);
>=20
> +.. Note::
> +
> +         EventDev needs to be started before starting the event producer=
s such
> +         as event_eth_rx_adapter, event_timer_adapter and
> event_crypto_adapter.
> +
>  Ingress of New Events
>  ~~~~~~~~~~~~~~~~~~~~~
>=20
> diff --git a/lib/librte_eventdev/rte_event_crypto_adapter.h
> b/lib/librte_eventdev/rte_event_crypto_adapter.h
> index d367309cb..a7419e91c 100644
> --- a/lib/librte_eventdev/rte_event_crypto_adapter.h
> +++ b/lib/librte_eventdev/rte_event_crypto_adapter.h
> @@ -472,6 +472,10 @@ rte_event_crypto_adapter_queue_pair_del(uint8_t
> id, uint8_t cdev_id,
>   * @return
>   *  - 0: Success, adapter started successfully.
>   *  - <0: Error code on failure.
> + *
> + * @note
> + *  The eventdev to which the event_crypto_adapter is connected needs
> + to
> + *  be started before calling rte_event_crypto_adapter_start().
>   */
>  int __rte_experimental
>  rte_event_crypto_adapter_start(uint8_t id); diff --git
> a/lib/librte_eventdev/rte_event_eth_rx_adapter.h
> b/lib/librte_eventdev/rte_event_eth_rx_adapter.h
> index 863b72a10..2314b93f6 100644
> --- a/lib/librte_eventdev/rte_event_eth_rx_adapter.h
> +++ b/lib/librte_eventdev/rte_event_eth_rx_adapter.h
> @@ -405,6 +405,10 @@ int rte_event_eth_rx_adapter_queue_del(uint8_t
> id, uint16_t eth_dev_id,
>   * @return
>   *  - 0: Success, Adapter started correctly.
>   *  - <0: Error code on failure.
> + *
> + * @note
> + *  The eventdev to which the event_eth_rx_adapter is connected needs
> + to
> + *  be started before calling rte_event_eth_rx_adapter_start().
>   */
>  int rte_event_eth_rx_adapter_start(uint8_t id);
>=20
> diff --git a/lib/librte_eventdev/rte_event_timer_adapter.h
> b/lib/librte_eventdev/rte_event_timer_adapter.h
> index db98dec46..cc4518d41 100644
> --- a/lib/librte_eventdev/rte_event_timer_adapter.h
> +++ b/lib/librte_eventdev/rte_event_timer_adapter.h
> @@ -339,6 +339,10 @@ rte_event_timer_adapter_get_info(
>   *   - -EINVAL if adapter identifier invalid
>   *   - -ENOENT if software adapter but no service core mapped
>   *   - -ENOTSUP if software adapter and more than one service core mappe=
d
> + *
> + * @note
> + *  The eventdev to which the event_timer_adapter is connected needs to
> + *  be started before calling rte_event_timer_adapter_start().
>   */
>  int __rte_experimental
>  rte_event_timer_adapter_start(
> --
> 2.21.0

Reviewed-by: Erik Gabriel Carrillo <erik.g.carrillo@intel.com>

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From: "Carrillo, Erik G" <erik.g.carrillo@intel.com>
To: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>, "Jerin Jacob
 Kollanukkaran" <jerinj@marvell.com>, "Van Haaren, Harry"
 <harry.van.haaren@intel.com>, "Rao, Nikhil" <nikhil.rao@intel.com>, "Gujjar,
 Abhinandan S" <abhinandan.gujjar@intel.com>, "Mcnamara, John"
 <john.mcnamara@intel.com>
CC: "dev@dpdk.org" <dev@dpdk.org>
Thread-Topic: [dpdk-dev] [PATCH v3 3/3] doc: add notes about eventdev
 producer consumer dependency
Thread-Index: AQHU2RP6TCvvxpS/DUedhtnqHSOg7KYKIzEg
Date: Wed, 13 Mar 2019 22:22:21 +0000
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 <BE54F058557D9A4FAC1D84E2FC6D8757233D4450@fmsmsx115.amr.corp.intel.com>
References: <20190227200019.1085-1-pbhagavatula@marvell.com>
 <20190312204037.16141-1-pbhagavatula@marvell.com>
 <20190312204037.16141-3-pbhagavatula@marvell.com>
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 producer consumer dependency
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> -----Original Message-----
> From: Pavan Nikhilesh Bhagavatula [mailto:pbhagavatula@marvell.com]
> Sent: Tuesday, March 12, 2019 3:41 PM
> To: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Van Haaren, Harry
> <harry.van.haaren@intel.com>; Rao, Nikhil <nikhil.rao@intel.com>; Carrill=
o,
> Erik G <erik.g.carrillo@intel.com>; Gujjar, Abhinandan S
> <abhinandan.gujjar@intel.com>; Mcnamara, John
> <john.mcnamara@intel.com>
> Cc: dev@dpdk.org; Pavan Nikhilesh Bhagavatula
> <pbhagavatula@marvell.com>
> Subject: [dpdk-dev] [PATCH v3 3/3] doc: add notes about eventdev producer
> consumer dependency
>=20
> From: Pavan Nikhilesh <pbhagavatula@marvell.com>
>=20
> EventDev i.e consumer needs to be started before starting the event
> producers.
> Update documentation of EventDev and EventDev adapters.
>=20
> Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
> ---
>  v2 Changes: Add Notes to doxygen API.
>=20
>  doc/guides/prog_guide/event_crypto_adapter.rst      | 5 +++++
>  doc/guides/prog_guide/event_ethernet_rx_adapter.rst | 5 +++++
>  doc/guides/prog_guide/event_timer_adapter.rst       | 5 +++++
>  doc/guides/prog_guide/eventdev.rst                  | 5 +++++
>  lib/librte_eventdev/rte_event_crypto_adapter.h      | 4 ++++
>  lib/librte_eventdev/rte_event_eth_rx_adapter.h      | 4 ++++
>  lib/librte_eventdev/rte_event_timer_adapter.h       | 4 ++++
>  7 files changed, 32 insertions(+)
>=20
> diff --git a/doc/guides/prog_guide/event_crypto_adapter.rst
> b/doc/guides/prog_guide/event_crypto_adapter.rst
> index 9fe09c805..1e3eb7139 100644
> --- a/doc/guides/prog_guide/event_crypto_adapter.rst
> +++ b/doc/guides/prog_guide/event_crypto_adapter.rst
> @@ -286,6 +286,11 @@ service function if one exists.
>=20
>          rte_event_crypto_adapter_start(id, mode);
>=20
> +.. Note::
> +
> +         The eventdev to which the event_crypto_adapter is connected nee=
ds
> to
> +         be started before calling rte_event_crypto_adapter_start().
> +
>  Get adapter statistics
>  ~~~~~~~~~~~~~~~~~~~~~~
>=20
> diff --git a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> index 0166bb45d..e95529974 100644
> --- a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> +++ b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> @@ -135,6 +135,11 @@ This function calls the start callbacks of the event=
dev
> PMDs for hardware based  eventdev-ethdev connections and
> ``rte_service_run_state_set()`` to enable the  service function if one ex=
ists.
>=20
> +.. Note::
> +
> +         The eventdev to which the event_eth_rx_adapter is connected nee=
ds
> to
> +         be started before calling rte_event_eth_rx_adapter_start().
> +
>  Getting Adapter Statistics
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~
>=20
> diff --git a/doc/guides/prog_guide/event_timer_adapter.rst
> b/doc/guides/prog_guide/event_timer_adapter.rst
> index 3b4446ee9..eb195ebd4 100644
> --- a/doc/guides/prog_guide/event_timer_adapter.rst
> +++ b/doc/guides/prog_guide/event_timer_adapter.rst
> @@ -179,6 +179,11 @@ running the event timer adapter. This function calls
> the start entry points  defined by eventdev PMDs for hardware
> implementations or puts a service  component into the running state in th=
e
> software implementation.
>=20
> +.. Note::
> +
> +         The eventdev to which the event_timer_adapter is connected need=
s
> to
> +         be started before calling rte_event_timer_adapter_start().
> +
>  Arming Event Timers
>  ~~~~~~~~~~~~~~~~~~~
>=20
> diff --git a/doc/guides/prog_guide/eventdev.rst
> b/doc/guides/prog_guide/eventdev.rst
> index 8fcae5469..dcdfeb75e 100644
> --- a/doc/guides/prog_guide/eventdev.rst
> +++ b/doc/guides/prog_guide/eventdev.rst
> @@ -296,6 +296,11 @@ eventdev.
>=20
>          int err =3D rte_event_dev_start(dev_id);
>=20
> +.. Note::
> +
> +         EventDev needs to be started before starting the event producer=
s such
> +         as event_eth_rx_adapter, event_timer_adapter and
> event_crypto_adapter.
> +
>  Ingress of New Events
>  ~~~~~~~~~~~~~~~~~~~~~
>=20
> diff --git a/lib/librte_eventdev/rte_event_crypto_adapter.h
> b/lib/librte_eventdev/rte_event_crypto_adapter.h
> index d367309cb..a7419e91c 100644
> --- a/lib/librte_eventdev/rte_event_crypto_adapter.h
> +++ b/lib/librte_eventdev/rte_event_crypto_adapter.h
> @@ -472,6 +472,10 @@ rte_event_crypto_adapter_queue_pair_del(uint8_t
> id, uint8_t cdev_id,
>   * @return
>   *  - 0: Success, adapter started successfully.
>   *  - <0: Error code on failure.
> + *
> + * @note
> + *  The eventdev to which the event_crypto_adapter is connected needs
> + to
> + *  be started before calling rte_event_crypto_adapter_start().
>   */
>  int __rte_experimental
>  rte_event_crypto_adapter_start(uint8_t id); diff --git
> a/lib/librte_eventdev/rte_event_eth_rx_adapter.h
> b/lib/librte_eventdev/rte_event_eth_rx_adapter.h
> index 863b72a10..2314b93f6 100644
> --- a/lib/librte_eventdev/rte_event_eth_rx_adapter.h
> +++ b/lib/librte_eventdev/rte_event_eth_rx_adapter.h
> @@ -405,6 +405,10 @@ int rte_event_eth_rx_adapter_queue_del(uint8_t
> id, uint16_t eth_dev_id,
>   * @return
>   *  - 0: Success, Adapter started correctly.
>   *  - <0: Error code on failure.
> + *
> + * @note
> + *  The eventdev to which the event_eth_rx_adapter is connected needs
> + to
> + *  be started before calling rte_event_eth_rx_adapter_start().
>   */
>  int rte_event_eth_rx_adapter_start(uint8_t id);
>=20
> diff --git a/lib/librte_eventdev/rte_event_timer_adapter.h
> b/lib/librte_eventdev/rte_event_timer_adapter.h
> index db98dec46..cc4518d41 100644
> --- a/lib/librte_eventdev/rte_event_timer_adapter.h
> +++ b/lib/librte_eventdev/rte_event_timer_adapter.h
> @@ -339,6 +339,10 @@ rte_event_timer_adapter_get_info(
>   *   - -EINVAL if adapter identifier invalid
>   *   - -ENOENT if software adapter but no service core mapped
>   *   - -ENOTSUP if software adapter and more than one service core mappe=
d
> + *
> + * @note
> + *  The eventdev to which the event_timer_adapter is connected needs to
> + *  be started before calling rte_event_timer_adapter_start().
>   */
>  int __rte_experimental
>  rte_event_timer_adapter_start(
> --
> 2.21.0

Reviewed-by: Erik Gabriel Carrillo <erik.g.carrillo@intel.com>