From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: Andrew Rybchenko <arybchenko@solarflare.com>, dev@dpdk.org
Cc: Olivier MATZ <olivier.matz@6wind.com>
Subject: Re: [dpdk-dev] [PATCH v1 3/9] mempool: remove callback to get capabilities
Date: Wed, 14 Mar 2018 16:53:34 +0000 [thread overview]
Message-ID: <216ac4e5-2815-de23-4185-fd28210c0477@intel.com> (raw)
In-Reply-To: <72792bc9-8e64-9a18-ce6c-ffd6777f1748@solarflare.com>
On 14-Mar-18 4:12 PM, Andrew Rybchenko wrote:
> On 03/14/2018 05:40 PM, Burakov, Anatoly wrote:
>> On 10-Mar-18 3:39 PM, Andrew Rybchenko wrote:
>>> The callback was introduced to let generic code to know octeontx
>>> mempool driver requirements to use single physically contiguous
>>> memory chunk to store all objects and align object address to
>>> total object size. Now these requirements are met using a new
>>> callbacks to calculate required memory chunk size and to populate
>>> objects using provided memory chunk.
>>>
>>> These capability flags are not used anywhere else.
>>>
>>> Restricting capabilities to flags is not generic and likely to
>>> be insufficient to describe mempool driver features. If required
>>> in the future, API which returns structured information may be
>>> added.
>>>
>>> Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
>>> ---
>>
>> Just a general comment - it is not enough to describe minimum memchunk
>> requirements. With memory hotplug patchset that's hopefully getting
>> merged in 18.05, memzones will no longer be guaranteed to be
>> IOVA-contiguous. So, if a driver requires its mempool to not only be
>> populated from a single memzone, but a single *physically contiguous*
>> memzone, going by only callbacks will not do, because whether or not
>> something should be a single memzone says nothing about whether this
>> memzone has to also be IOVA-contiguous.
>>
>> So i believe this needs to stay in one form or another.
>>
>> (also it would be nice to have a flag that a user could pass to
>> mempool_create that would force memzone reservation be
>> IOVA-contiguous, but that's a topic for another conversation. prime
>> user for this would be KNI.)
>
> I think that min_chunk_size should be treated as IOVA-contiguous.
Why? It's perfectly reasonable to e.g. implement a software mempool
driver that would perform some optimizations due to all objects being in
the same VA-contiguous memzone, yet not be dependent on underlying
physical memory layout. These are two separate concerns IMO.
> So, we
> have 4 levels:
> - MEMPOOL_F_NO_PHYS_CONTIG (min_chunk_size == 0) -- IOVA-congtiguous
> is not required at all
> - no MEMPOOL_F_NO_PHYS_CONTIG (min_chunk_size == total_obj_size) --
> object should be IOVA-contiguous
> - min_chunk_size > total_obj_size -- group of objects should be
> IOVA-contiguous
> - min_chunk_size == <all-objects-size> -- all objects should be
> IOVA-contiguous
I don't think this "automagic" decision on what should be
IOVA-contiguous or not is the way to go. It needlessly complicates
things, when all it takes is another flag passed to mempool allocator
somewhere.
I'm not sure what is the best solution here. Perhaps another option
would be to let mempool drivers allocate their memory as well? I.e.
leave current behavior as default, as it's likely that it would be
suitable for nearly all use cases, but provide another option to
override memory allocation completely, so that e.g. octeontx could just
do a memzone_reserve_contig() without regard for default allocation
settings. I think this could be the cleanest solution.
>
> If so, how allocation should be implemented?
> 1. if (min_chunk_size > min_page_size)
> a. try all contiguous
> b. if cannot, do by mem_chunk_size contiguous
> 2. else allocate non-contiguous
>
> --
> Andrew.
--
Thanks,
Anatoly
next prev parent reply other threads:[~2018-03-14 16:53 UTC|newest]
Thread overview: 197+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-24 16:06 [dpdk-dev] [RFC PATCH 0/6] mempool: add bucket mempool driver Andrew Rybchenko
2017-11-24 16:06 ` [dpdk-dev] [RFC PATCH 1/6] mempool: implement abstract mempool info API Andrew Rybchenko
2017-12-14 13:36 ` Olivier MATZ
2018-01-17 15:03 ` Andrew Rybchenko
2017-11-24 16:06 ` [dpdk-dev] [RFC PATCH 2/6] mempool: implement clustered object allocation Andrew Rybchenko
2017-12-14 13:37 ` Olivier MATZ
2018-01-17 15:03 ` Andrew Rybchenko
2018-01-17 15:55 ` santosh
2018-01-17 16:37 ` Andrew Rybchenko
2017-11-24 16:06 ` [dpdk-dev] [RFC PATCH 3/6] mempool/bucket: implement bucket mempool manager Andrew Rybchenko
2017-12-14 13:38 ` Olivier MATZ
2018-01-17 15:06 ` Andrew Rybchenko
2017-11-24 16:06 ` [dpdk-dev] [RFC PATCH 4/6] mempool: add a function to flush default cache Andrew Rybchenko
2017-12-14 13:38 ` Olivier MATZ
2018-01-17 15:07 ` Andrew Rybchenko
2017-11-24 16:06 ` [dpdk-dev] [RFC PATCH 5/6] mempool: support block dequeue operation Andrew Rybchenko
2017-12-14 13:38 ` Olivier MATZ
2017-11-24 16:06 ` [dpdk-dev] [RFC PATCH 6/6] mempool/bucket: implement " Andrew Rybchenko
2017-12-14 13:36 ` [dpdk-dev] [RFC PATCH 0/6] mempool: add bucket mempool driver Olivier MATZ
2018-01-17 15:03 ` Andrew Rybchenko
2018-01-23 13:15 ` [dpdk-dev] [RFC v2 00/17] " Andrew Rybchenko
2018-01-23 13:15 ` [dpdk-dev] [RFC v2 01/17] mempool: fix phys contig check if populate default skipped Andrew Rybchenko
2018-01-31 16:45 ` Olivier Matz
2018-02-01 5:05 ` santosh
2018-02-01 6:54 ` Andrew Rybchenko
2018-02-01 9:09 ` santosh
2018-02-01 9:18 ` Andrew Rybchenko
2018-02-01 9:30 ` santosh
2018-02-01 10:00 ` Andrew Rybchenko
2018-02-01 10:14 ` Olivier Matz
2018-02-01 10:33 ` santosh
2018-02-01 14:02 ` Andrew Rybchenko
2018-02-01 10:17 ` santosh
2018-02-01 14:02 ` [dpdk-dev] [PATCH] " Andrew Rybchenko
2018-02-05 23:53 ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
2018-01-23 13:15 ` [dpdk-dev] [RFC v2 02/17] mempool: add op to calculate memory size to be allocated Andrew Rybchenko
2018-01-31 16:45 ` Olivier Matz
2018-02-01 7:15 ` Andrew Rybchenko
2018-01-23 13:15 ` [dpdk-dev] [RFC v2 03/17] mempool/octeontx: add callback to calculate memory size Andrew Rybchenko
[not found] ` <BN3PR07MB2513732462EB5FE5E1B05713E3FA0@BN3PR07MB2513.namprd07.prod.outlook.com>
2018-02-01 10:01 ` santosh
2018-02-01 13:40 ` santosh
2018-03-10 15:49 ` Andrew Rybchenko
2018-03-11 6:31 ` santosh
2018-01-23 13:15 ` [dpdk-dev] [RFC v2 04/17] mempool: add op to populate objects using provided memory Andrew Rybchenko
2018-01-31 16:45 ` Olivier Matz
2018-02-01 8:51 ` Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 05/17] mempool/octeontx: implement callback to populate objects Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 06/17] mempool: remove callback to get capabilities Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 07/17] mempool: deprecate xmem functions Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 08/17] mempool/octeontx: prepare to remove register memory area op Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 09/17] mempool/dpaa: convert to use populate driver op Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 10/17] mempool: remove callback to register memory area Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 11/17] mempool: ensure the mempool is initialized before populating Andrew Rybchenko
2018-01-31 16:45 ` Olivier Matz
2018-02-01 8:53 ` Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 12/17] mempool/bucket: implement bucket mempool manager Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 13/17] mempool: support flushing the default cache of the mempool Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 14/17] mempool: implement abstract mempool info API Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 15/17] mempool: support block dequeue operation Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 16/17] mempool/bucket: implement " Andrew Rybchenko
2018-01-23 13:16 ` [dpdk-dev] [RFC v2 17/17] mempool/bucket: do not allow one lcore to grab all buckets Andrew Rybchenko
2018-01-31 16:44 ` [dpdk-dev] [RFC v2 00/17] mempool: add bucket mempool driver Olivier Matz
2018-03-10 15:39 ` [dpdk-dev] [PATCH v1 0/9] mempool: prepare to add bucket driver Andrew Rybchenko
2018-03-10 15:39 ` [dpdk-dev] [PATCH v1 1/9] mempool: add op to calculate memory size to be allocated Andrew Rybchenko
2018-03-11 12:51 ` santosh
2018-03-12 6:53 ` Andrew Rybchenko
2018-03-19 17:03 ` Olivier Matz
2018-03-20 10:29 ` Andrew Rybchenko
2018-03-20 14:41 ` Bruce Richardson
2018-03-10 15:39 ` [dpdk-dev] [PATCH v1 2/9] mempool: add op to populate objects using provided memory Andrew Rybchenko
2018-03-19 17:04 ` Olivier Matz
2018-03-21 7:05 ` Andrew Rybchenko
2018-03-10 15:39 ` [dpdk-dev] [PATCH v1 3/9] mempool: remove callback to get capabilities Andrew Rybchenko
2018-03-14 14:40 ` Burakov, Anatoly
2018-03-14 16:12 ` Andrew Rybchenko
2018-03-14 16:53 ` Burakov, Anatoly [this message]
2018-03-14 17:24 ` Andrew Rybchenko
2018-03-15 9:48 ` Burakov, Anatoly
2018-03-15 11:49 ` Andrew Rybchenko
2018-03-15 12:00 ` Burakov, Anatoly
2018-03-15 12:44 ` Andrew Rybchenko
2018-03-19 17:05 ` Olivier Matz
2018-03-19 17:06 ` Olivier Matz
2018-03-10 15:39 ` [dpdk-dev] [PATCH v1 4/9] mempool: deprecate xmem functions Andrew Rybchenko
2018-03-10 15:39 ` [dpdk-dev] [PATCH v1 5/9] mempool/octeontx: prepare to remove register memory area op Andrew Rybchenko
2018-03-10 15:39 ` [dpdk-dev] [PATCH v1 6/9] mempool/dpaa: " Andrew Rybchenko
2018-03-10 15:39 ` [dpdk-dev] [PATCH v1 7/9] mempool: remove callback to register memory area Andrew Rybchenko
2018-03-10 15:39 ` [dpdk-dev] [PATCH v1 8/9] mempool: ensure the mempool is initialized before populating Andrew Rybchenko
2018-03-19 17:06 ` Olivier Matz
2018-03-20 13:32 ` Andrew Rybchenko
2018-03-20 16:57 ` Olivier Matz
2018-03-10 15:39 ` [dpdk-dev] [PATCH v1 9/9] mempool: support flushing the default cache of the mempool Andrew Rybchenko
2018-03-14 15:49 ` [dpdk-dev] [PATCH v1 0/9] mempool: prepare to add bucket driver santosh
2018-03-14 15:57 ` Andrew Rybchenko
2018-03-19 17:03 ` Olivier Matz
2018-03-20 10:09 ` Andrew Rybchenko
2018-03-20 11:04 ` Thomas Monjalon
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 00/11] " Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 01/11] mempool: fix memhdr leak when no objects are populated Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 02/11] mempool: rename flag to control IOVA-contiguous objects Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 03/11] mempool: ensure the mempool is initialized before populating Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 04/11] mempool: add op to calculate memory size to be allocated Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 05/11] mempool: add op to populate objects using provided memory Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 06/11] mempool: remove callback to get capabilities Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 07/11] mempool: deprecate xmem functions Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 08/11] mempool/octeontx: prepare to remove register memory area op Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 09/11] mempool/dpaa: " Andrew Rybchenko
2018-03-26 7:13 ` Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 10/11] mempool: remove callback to register memory area Andrew Rybchenko
2018-03-25 16:20 ` [dpdk-dev] [PATCH v2 11/11] mempool: support flushing the default cache of the mempool Andrew Rybchenko
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 00/11] mempool: prepare to add bucket driver Andrew Rybchenko
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 01/11] mempool: fix memhdr leak when no objects are populated Andrew Rybchenko
2018-04-06 15:50 ` Olivier Matz
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 02/11] mempool: rename flag to control IOVA-contiguous objects Andrew Rybchenko
2018-04-06 15:50 ` Olivier Matz
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 03/11] mempool: ensure the mempool is initialized before populating Andrew Rybchenko
2018-04-04 15:06 ` santosh
2018-04-06 15:50 ` Olivier Matz
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 04/11] mempool: add op to calculate memory size to be allocated Andrew Rybchenko
2018-04-04 15:08 ` santosh
2018-04-06 15:51 ` Olivier Matz
2018-04-12 15:22 ` Burakov, Anatoly
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 05/11] mempool: add op to populate objects using provided memory Andrew Rybchenko
2018-04-04 15:09 ` santosh
2018-04-06 15:51 ` Olivier Matz
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 06/11] mempool: remove callback to get capabilities Andrew Rybchenko
2018-04-04 15:10 ` santosh
2018-04-06 15:51 ` Olivier Matz
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 07/11] mempool: deprecate xmem functions Andrew Rybchenko
2018-04-06 15:52 ` Olivier Matz
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 08/11] mempool/octeontx: prepare to remove register memory area op Andrew Rybchenko
2018-04-04 15:12 ` santosh
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 09/11] mempool/dpaa: " Andrew Rybchenko
2018-04-05 8:25 ` Hemant Agrawal
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 10/11] mempool: remove callback to register memory area Andrew Rybchenko
2018-04-04 15:13 ` santosh
2018-04-06 15:52 ` Olivier Matz
2018-03-26 16:09 ` [dpdk-dev] [PATCH v3 11/11] mempool: support flushing the default cache of the mempool Andrew Rybchenko
2018-04-06 15:53 ` Olivier Matz
2018-03-26 16:12 ` [dpdk-dev] [PATCH v1 0/6] mempool: add bucket driver Andrew Rybchenko
2018-03-26 16:12 ` [dpdk-dev] [PATCH v1 1/6] mempool/bucket: implement bucket mempool manager Andrew Rybchenko
2018-03-26 16:12 ` [dpdk-dev] [PATCH v1 2/6] mempool: implement abstract mempool info API Andrew Rybchenko
2018-04-19 16:42 ` Olivier Matz
2018-04-25 9:57 ` Andrew Rybchenko
2018-04-25 10:26 ` Olivier Matz
2018-03-26 16:12 ` [dpdk-dev] [PATCH v1 3/6] mempool: support block dequeue operation Andrew Rybchenko
2018-04-19 16:41 ` Olivier Matz
2018-04-25 9:49 ` Andrew Rybchenko
2018-03-26 16:12 ` [dpdk-dev] [PATCH v1 4/6] mempool/bucket: implement " Andrew Rybchenko
2018-03-26 16:12 ` [dpdk-dev] [PATCH v1 5/6] mempool/bucket: do not allow one lcore to grab all buckets Andrew Rybchenko
2018-03-26 16:12 ` [dpdk-dev] [PATCH v1 6/6] doc: advertise bucket mempool driver Andrew Rybchenko
2018-04-19 16:43 ` Olivier Matz
2018-04-19 16:41 ` [dpdk-dev] [PATCH v1 0/6] mempool: add bucket driver Olivier Matz
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 00/11] mempool: prepare to " Andrew Rybchenko
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 01/11] mempool: fix memhdr leak when no objects are populated Andrew Rybchenko
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 02/11] mempool: rename flag to control IOVA-contiguous objects Andrew Rybchenko
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 03/11] mempool: ensure the mempool is initialized before populating Andrew Rybchenko
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 04/11] mempool: add op to calculate memory size to be allocated Andrew Rybchenko
2018-04-16 15:33 ` Olivier Matz
2018-04-16 15:41 ` Andrew Rybchenko
2018-04-17 10:23 ` Burakov, Anatoly
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 05/11] mempool: add op to populate objects using provided memory Andrew Rybchenko
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 06/11] mempool: remove callback to get capabilities Andrew Rybchenko
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 07/11] mempool: deprecate xmem functions Andrew Rybchenko
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 08/11] mempool/octeontx: prepare to remove register memory area op Andrew Rybchenko
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 09/11] mempool/dpaa: " Andrew Rybchenko
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 10/11] mempool: remove callback to register memory area Andrew Rybchenko
2018-04-16 13:24 ` [dpdk-dev] [PATCH v4 11/11] mempool: support flushing the default cache of the mempool Andrew Rybchenko
2018-04-24 0:20 ` [dpdk-dev] [PATCH v4 00/11] mempool: prepare to add bucket driver Thomas Monjalon
2018-04-16 13:33 ` [dpdk-dev] [PATCH v2 0/6] mempool: " Andrew Rybchenko
2018-04-16 13:33 ` [dpdk-dev] [PATCH v2 1/6] mempool/bucket: implement bucket mempool manager Andrew Rybchenko
2018-04-16 13:33 ` [dpdk-dev] [PATCH v2 2/6] mempool: implement abstract mempool info API Andrew Rybchenko
2018-04-25 8:44 ` Olivier Matz
2018-04-16 13:33 ` [dpdk-dev] [PATCH v2 3/6] mempool: support block dequeue operation Andrew Rybchenko
2018-04-25 8:45 ` Olivier Matz
2018-04-16 13:33 ` [dpdk-dev] [PATCH v2 4/6] mempool/bucket: implement " Andrew Rybchenko
2018-04-16 13:33 ` [dpdk-dev] [PATCH v2 5/6] mempool/bucket: do not allow one lcore to grab all buckets Andrew Rybchenko
2018-04-16 13:33 ` [dpdk-dev] [PATCH v2 6/6] doc: advertise bucket mempool driver Andrew Rybchenko
2018-04-24 23:00 ` [dpdk-dev] [PATCH v2 0/6] mempool: add bucket driver Thomas Monjalon
2018-04-25 8:43 ` Olivier Matz
2018-04-25 16:32 ` [dpdk-dev] [PATCH v3 " Andrew Rybchenko
2018-04-25 16:32 ` [dpdk-dev] [PATCH v3 1/6] mempool/bucket: implement bucket mempool manager Andrew Rybchenko
2018-04-25 16:32 ` [dpdk-dev] [PATCH v3 2/6] mempool: implement abstract mempool info API Andrew Rybchenko
2018-04-25 16:32 ` [dpdk-dev] [PATCH v3 3/6] mempool: support block dequeue operation Andrew Rybchenko
2018-04-25 16:32 ` [dpdk-dev] [PATCH v3 4/6] mempool/bucket: implement " Andrew Rybchenko
2018-04-25 16:32 ` [dpdk-dev] [PATCH v3 5/6] mempool/bucket: do not allow one lcore to grab all buckets Andrew Rybchenko
2018-04-25 16:32 ` [dpdk-dev] [PATCH v3 6/6] doc: advertise bucket mempool driver Andrew Rybchenko
2018-04-25 21:56 ` Thomas Monjalon
2018-04-25 22:04 ` Thomas Monjalon
2018-04-26 9:50 ` Andrew Rybchenko
2018-04-26 10:59 ` [dpdk-dev] [PATCH v4 0/5] mempool: add bucket driver Andrew Rybchenko
2018-04-26 10:59 ` [dpdk-dev] [PATCH v4 1/5] mempool/bucket: implement bucket mempool manager Andrew Rybchenko
2018-04-26 10:59 ` [dpdk-dev] [PATCH v4 2/5] mempool: implement abstract mempool info API Andrew Rybchenko
2018-04-26 10:59 ` [dpdk-dev] [PATCH v4 3/5] mempool: support block dequeue operation Andrew Rybchenko
2018-04-26 10:59 ` [dpdk-dev] [PATCH v4 4/5] mempool/bucket: implement " Andrew Rybchenko
2018-04-26 10:59 ` [dpdk-dev] [PATCH v4 5/5] mempool/bucket: do not allow one lcore to grab all buckets Andrew Rybchenko
2018-04-26 21:35 ` [dpdk-dev] [PATCH v4 0/5] mempool: add bucket driver Thomas Monjalon
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