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From: santosh <santosh.shukla@caviumnetworks.com>
To: Olivier MATZ <olivier.matz@6wind.com>
Cc: dev@dpdk.org, thomas@monjalon.net,
	jerin.jacob@caviumnetworks.com, hemant.agrawal@nxp.com
Subject: Re: [dpdk-dev] [PATCH v4 4/7] mempool: get the mempool capability
Date: Mon, 4 Sep 2017 21:59:09 +0530	[thread overview]
Message-ID: <a03fe4e9-2f8d-3648-a22d-d968ef19dd2c@caviumnetworks.com> (raw)
In-Reply-To: <20170904155629.usczyoejbozmobkc@neon>


On Monday 04 September 2017 09:26 PM, Olivier MATZ wrote:
> On Mon, Sep 04, 2017 at 08:14:39PM +0530, santosh wrote:
>> Hi Olivier,
>>
>>
>> On Monday 04 September 2017 08:02 PM, Olivier MATZ wrote:
>>> On Tue, Aug 15, 2017 at 11:37:40AM +0530, Santosh Shukla wrote:
>>>> Allow mempool to advertise its capability.
>>>> A handler been introduced called rte_mempool_ops_get_capabilities.
>>>> - Upon ->get_capabilities call, mempool driver will advertise
>>>> capability by updating to 'mp->flags'.
>>>>
>>>> Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
>>>> Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
>>>> ---
>>>>  lib/librte_mempool/rte_mempool.c           |  5 +++++
>>>>  lib/librte_mempool/rte_mempool.h           | 20 ++++++++++++++++++++
>>>>  lib/librte_mempool/rte_mempool_ops.c       | 14 ++++++++++++++
>>>>  lib/librte_mempool/rte_mempool_version.map |  7 +++++++
>>>>  4 files changed, 46 insertions(+)
>>>>
>>>> diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
>>>> index f95c01c00..d518c53de 100644
>>>> --- a/lib/librte_mempool/rte_mempool.c
>>>> +++ b/lib/librte_mempool/rte_mempool.c
>>>> @@ -529,6 +529,11 @@ rte_mempool_populate_default(struct rte_mempool *mp)
>>>>  	if (mp->nb_mem_chunks != 0)
>>>>  		return -EEXIST;
>>>>  
>>>> +	/* Get mempool capability */
>>>> +	ret = rte_mempool_ops_get_capabilities(mp);
>>>> +	if (ret)
>>>> +		RTE_LOG(DEBUG, MEMPOOL, "get_capability not supported for %s\n", mp->name);
>>>> +
>>> there is probably a checkpatch error here (80 cols)
>> for debug, line over 80 char warning acceptable, right?
>> anyways, I will reduce verbose to less than 80 in v5.
> What do you mean by "for debug"?
>
> All lines should be shorter than 80 cols, except if that is not
> possible without spliting a string or making the code hard to
> read or maintain.
>
>>>> +/**
>>>> + * @internal wrapper for mempool_ops get_capabilities callback.
>>>> + *
>>>> + * @param mp
>>>> + *   Pointer to the memory pool.
>>>> + * @return
>>>> + *   - 0: Success; Capability updated to mp->flags
>>>> + *   - <0: Error; code of capability function.
>>>> + */
>>>> +int
>>>> +rte_mempool_ops_get_capabilities(struct rte_mempool *mp);
>>>> +
>>> What does "Capability updated to mp->flags" mean?
>> it says that external mempool driver has updated his pool capability in mp->flags.
>> I'll reword in v5.
> Please, can you explain what does "update" mean?
> Is it masked? Or-ed?

Or-ed.

>>> Why not having instead:
>>>  int rte_mempool_ops_get_capabilities(struct rte_mempool *mp,
>>>      unsigned int *flags);
>>>
>>> ?
>> No strong opinion, But Since we already passing mempool as param why not update
>> flag info into mp->flag.
> From an API perspective, we expect that a function called
> "mempool_ops_get_capabilities" returns something.

Current API return info:
0 : for success ..meaning driver supports capability and advertised same by Or-ing to mp->flags
(now in v5, mempool driver will update to second flag param)
<0 : error.

Is return info fine with you for v5. Pl. confirm. Thanks. 

>> However I see your, I guess you want explicitly highlight flag as capability update {action}
>> in second param, in that case how about keeping first mempool param 'const' like below:
>>
>> int rte_mempool_ops_get_capabilities(const struct rte_mempool *mp,
>>      unsigned int *flags);
>>
>> are you ok with const change in above API.
> Yes, adding the const makes sense here.

queued v6, Thanks.

  reply	other threads:[~2017-09-04 16:29 UTC|newest]

Thread overview: 116+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-21 17:32 [dpdk-dev] [PATCH 0/4] Infrastructure to support octeontx HW mempool manager Santosh Shukla
2017-06-21 17:32 ` [dpdk-dev] [PATCH 1/4] mempool: get the external mempool capability Santosh Shukla
2017-07-03 16:37   ` Olivier Matz
2017-07-05  6:41     ` santosh
2017-07-10 13:55       ` Olivier Matz
2017-07-10 16:09         ` santosh
2017-06-21 17:32 ` [dpdk-dev] [PATCH 2/4] mempool: detect physical contiguous object in pool Santosh Shukla
2017-07-03 16:37   ` Olivier Matz
2017-07-05  7:07     ` santosh
2017-06-21 17:32 ` [dpdk-dev] [PATCH 3/4] mempool: introduce block size align flag Santosh Shukla
2017-07-03 16:37   ` Olivier Matz
2017-07-05  7:35     ` santosh
2017-07-10 13:15       ` Olivier Matz
2017-07-10 16:22         ` santosh
2017-06-21 17:32 ` [dpdk-dev] [PATCH 4/4] mempool: update range info to pool Santosh Shukla
2017-07-13  9:32 ` [dpdk-dev] [PATCH v2 0/6] Infrastructure to support octeontx HW mempool manager Santosh Shukla
2017-07-13  9:32   ` [dpdk-dev] [PATCH v2 1/6] mempool: fix flags data type Santosh Shukla
2017-07-13  9:32   ` [dpdk-dev] [PATCH v2 2/6] mempool: get the mempool capability Santosh Shukla
2017-07-13  9:32   ` [dpdk-dev] [PATCH v2 3/6] mempool: detect physical contiguous object in pool Santosh Shukla
2017-07-13  9:32   ` [dpdk-dev] [PATCH v2 4/6] mempool: add mempool arg in xmem size and usage Santosh Shukla
2017-07-13  9:32   ` [dpdk-dev] [PATCH v2 5/6] mempool: introduce block size align flag Santosh Shukla
2017-07-13  9:32   ` [dpdk-dev] [PATCH v2 6/6] mempool: update range info to pool Santosh Shukla
2017-07-18  6:07   ` [dpdk-dev] [PATCH v2 0/6] Infrastructure to support octeontx HW mempool manager santosh
2017-07-20 13:47   ` [dpdk-dev] [PATCH v3 " Santosh Shukla
2017-07-20 13:47     ` [dpdk-dev] [PATCH v3 1/6] mempool: fix flags data type Santosh Shukla
2017-07-20 13:47     ` [dpdk-dev] [PATCH v3 2/6] mempool: get the mempool capability Santosh Shukla
2017-07-20 13:47     ` [dpdk-dev] [PATCH v3 3/6] mempool: detect physical contiguous object in pool Santosh Shukla
2017-07-20 13:47     ` [dpdk-dev] [PATCH v3 4/6] mempool: add mempool arg in xmem size and usage Santosh Shukla
2017-07-20 13:47     ` [dpdk-dev] [PATCH v3 5/6] mempool: introduce block size align flag Santosh Shukla
2017-07-20 13:47     ` [dpdk-dev] [PATCH v3 6/6] mempool: update range info to pool Santosh Shukla
2017-08-15  6:07     ` [dpdk-dev] [PATCH v4 0/7] Infrastructure to support octeontx HW mempool manager Santosh Shukla
2017-08-15  6:07       ` [dpdk-dev] [PATCH v4 1/7] mempool: fix flags data type Santosh Shukla
2017-09-04 14:11         ` Olivier MATZ
2017-09-04 14:18           ` santosh
2017-08-15  6:07       ` [dpdk-dev] [PATCH v4 2/7] mempool: add mempool arg in xmem size and usage Santosh Shukla
2017-09-04 14:22         ` Olivier MATZ
2017-09-04 14:33           ` santosh
2017-09-04 14:46             ` Olivier MATZ
2017-09-04 14:58               ` santosh
2017-09-04 15:23                 ` Olivier MATZ
2017-09-04 15:52                   ` santosh
2017-08-15  6:07       ` [dpdk-dev] [PATCH v4 3/7] doc: remove mempool api change notice Santosh Shukla
2017-08-15  6:07       ` [dpdk-dev] [PATCH v4 4/7] mempool: get the mempool capability Santosh Shukla
2017-09-04 14:32         ` Olivier MATZ
2017-09-04 14:44           ` santosh
2017-09-04 15:56             ` Olivier MATZ
2017-09-04 16:29               ` santosh [this message]
2017-08-15  6:07       ` [dpdk-dev] [PATCH v4 5/7] mempool: detect physical contiguous object in pool Santosh Shukla
2017-09-04 14:43         ` Olivier MATZ
2017-09-04 14:47           ` santosh
2017-09-04 16:00             ` Olivier MATZ
2017-08-15  6:07       ` [dpdk-dev] [PATCH v4 6/7] mempool: introduce block size align flag Santosh Shukla
2017-09-04 16:20         ` Olivier MATZ
2017-09-04 17:45           ` santosh
2017-09-07  7:27             ` Olivier MATZ
2017-09-07  7:37               ` santosh
2017-08-15  6:07       ` [dpdk-dev] [PATCH v4 7/7] mempool: update range info to pool Santosh Shukla
2017-09-06 11:28       ` [dpdk-dev] [PATCH v5 0/8] Infrastructure to support octeontx HW mempool manager Santosh Shukla
2017-09-06 11:28         ` [dpdk-dev] [PATCH v5 1/8] mempool: remove unused flags argument Santosh Shukla
2017-09-07  7:41           ` Olivier MATZ
2017-09-06 11:28         ` [dpdk-dev] [PATCH v5 2/8] mempool: change flags from int to unsigned int Santosh Shukla
2017-09-07  7:43           ` Olivier MATZ
2017-09-06 11:28         ` [dpdk-dev] [PATCH v5 3/8] mempool: add flags arg in xmem size and usage Santosh Shukla
2017-09-07  7:46           ` Olivier MATZ
2017-09-07  7:49             ` santosh
2017-09-06 11:28         ` [dpdk-dev] [PATCH v5 4/8] doc: remove mempool notice Santosh Shukla
2017-09-07  7:47           ` Olivier MATZ
2017-09-06 11:28         ` [dpdk-dev] [PATCH v5 5/8] mempool: get the mempool capability Santosh Shukla
2017-09-07  7:59           ` Olivier MATZ
2017-09-07  8:15             ` santosh
2017-09-07  8:39               ` Olivier MATZ
2017-09-06 11:28         ` [dpdk-dev] [PATCH v5 6/8] mempool: detect physical contiguous object in pool Santosh Shukla
2017-09-07  8:05           ` Olivier MATZ
2017-09-06 11:28         ` [dpdk-dev] [PATCH v5 7/8] mempool: introduce block size align flag Santosh Shukla
2017-09-07  8:13           ` Olivier MATZ
2017-09-07  8:27             ` santosh
2017-09-07  8:57               ` Olivier MATZ
2017-09-06 11:28         ` [dpdk-dev] [PATCH v5 8/8] mempool: update range info to pool Santosh Shukla
2017-09-07  8:30           ` Olivier MATZ
2017-09-07  8:56             ` santosh
2017-09-07  9:09               ` Olivier MATZ
2017-09-07 15:30         ` [dpdk-dev] [PATCH v6 0/8] Infrastructure to support octeontx HW mempool manager Santosh Shukla
2017-09-07 15:30           ` [dpdk-dev] [PATCH v6 1/8] mempool: remove unused flags argument Santosh Shukla
2017-09-07 15:30           ` [dpdk-dev] [PATCH v6 2/8] mempool: change flags from int to unsigned int Santosh Shukla
2017-09-07 15:30           ` [dpdk-dev] [PATCH v6 3/8] mempool: add flags arg in xmem size and usage Santosh Shukla
2017-09-25 11:24             ` Olivier MATZ
2017-09-07 15:30           ` [dpdk-dev] [PATCH v6 4/8] doc: remove mempool notice Santosh Shukla
2017-09-07 15:30           ` [dpdk-dev] [PATCH v6 5/8] mempool: get the mempool capability Santosh Shukla
2017-09-25 11:26             ` Olivier MATZ
2017-09-07 15:30           ` [dpdk-dev] [PATCH v6 6/8] mempool: detect physical contiguous object in pool Santosh Shukla
2017-09-07 15:30           ` [dpdk-dev] [PATCH v6 7/8] mempool: introduce block size align flag Santosh Shukla
2017-09-22 12:59             ` Hemant Agrawal
2017-09-25 11:32             ` Olivier MATZ
2017-09-25 22:08               ` santosh
2017-09-07 15:30           ` [dpdk-dev] [PATCH v6 8/8] mempool: notify memory area to pool Santosh Shukla
2017-09-25 11:41             ` Olivier MATZ
2017-09-25 22:18               ` santosh
2017-09-29  4:53                 ` santosh
2017-09-29  8:20                   ` Olivier MATZ
2017-09-29  8:25                     ` santosh
2017-09-13  9:58           ` [dpdk-dev] [PATCH v6 0/8] Infrastructure to support octeontx HW mempool manager santosh
2017-09-19  8:26             ` santosh
2017-10-01  9:28           ` [dpdk-dev] [PATCH v7 " Santosh Shukla
2017-10-01  9:28             ` [dpdk-dev] [PATCH v7 1/8] mempool: remove unused flags argument Santosh Shukla
2017-10-01  9:28             ` [dpdk-dev] [PATCH v7 2/8] mempool: change flags from int to unsigned int Santosh Shukla
2017-10-01  9:28             ` [dpdk-dev] [PATCH v7 3/8] mempool: add flags arg in xmem size and usage Santosh Shukla
2017-10-01  9:28             ` [dpdk-dev] [PATCH v7 4/8] doc: remove mempool notice Santosh Shukla
2017-10-01  9:28             ` [dpdk-dev] [PATCH v7 5/8] mempool: get the mempool capability Santosh Shukla
2017-10-01  9:29             ` [dpdk-dev] [PATCH v7 6/8] mempool: detect physical contiguous object in pool Santosh Shukla
2017-10-01  9:29             ` [dpdk-dev] [PATCH v7 7/8] mempool: introduce block size align flag Santosh Shukla
2017-10-02  8:35               ` santosh
2017-10-02 14:26               ` Olivier MATZ
2017-10-01  9:29             ` [dpdk-dev] [PATCH v7 8/8] mempool: notify memory area to pool Santosh Shukla
2017-10-02  8:36               ` santosh
2017-10-02 14:27               ` Olivier MATZ
2017-10-06 20:00             ` [dpdk-dev] [PATCH v7 0/8] Infrastructure to support octeontx HW mempool manager Thomas Monjalon

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