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From: Andrew Rybchenko <arybchenko@solarflare.com>
To: Olivier Matz <olivier.matz@6wind.com>,
	Vamsi Krishna Attunuru <vattunuru@marvell.com>, <dev@dpdk.org>
Cc: Thomas Monjalon <thomas@monjalon.net>,
	Anatoly Burakov <anatoly.burakov@intel.com>,
	Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
	Kokkilagadda <kirankumark@marvell.com>,
	Ferruh Yigit <ferruh.yigit@intel.com>
Subject: Re: [dpdk-dev] [RFC 3/4] mempool: introduce function to get mempool page size
Date: Wed, 7 Aug 2019 18:21:41 +0300
Message-ID: <37519783-13aa-6854-5ff3-84d21e35fe97@solarflare.com> (raw)
In-Reply-To: <20190719133845.32432-4-olivier.matz@6wind.com>

On 7/19/19 4:38 PM, Olivier Matz wrote:
> In rte_mempool_populate_default(), we determine the page size,
> which is needed for calc_size and allocation of memory.
> 
> Move this in a function and export it, it will be used in next
> commit.

The major change here is taking page sizes into account even in the
case of RTE_IOVA_VA. As I understand it is the main problem initially
that we should respect page boundaries even in RTE_IOVA_VA case.
It looks like we can have it even without removal of contiguous
allocation attempt.

> Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
> ---
>   lib/librte_mempool/rte_mempool.c | 50 +++++++++++++++++++++++++---------------
>   lib/librte_mempool/rte_mempool.h |  6 +++++
>   2 files changed, 37 insertions(+), 19 deletions(-)
> 
> diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
> index 335032dc8..7def0ba68 100644
> --- a/lib/librte_mempool/rte_mempool.c
> +++ b/lib/librte_mempool/rte_mempool.c
> @@ -414,6 +414,32 @@ rte_mempool_populate_virt(struct rte_mempool *mp, char *addr,
>   	return ret;
>   }
>   
> +int
> +rte_mempool_get_page_size(struct rte_mempool *mp, size_t *pg_sz)
> +{
> +	bool need_iova_contig_obj;
> +	bool alloc_in_ext_mem;
> +	int ret;
> +
> +	/* check if we can retrieve a valid socket ID */
> +	ret = rte_malloc_heap_socket_is_external(mp->socket_id);
> +	if (ret < 0)
> +		return -EINVAL;
> +	alloc_in_ext_mem = (ret == 1);
> +	need_iova_contig_obj = !(mp->flags & MEMPOOL_F_NO_IOVA_CONTIG);
> +
> +	if (!need_iova_contig_obj)
> +		*pg_sz = 0;
> +	else if (!alloc_in_ext_mem && rte_eal_iova_mode() == RTE_IOVA_VA)
> +		*pg_sz = get_min_page_size(mp->socket_id);
> +	else if (rte_eal_has_hugepages() || alloc_in_ext_mem)
> +		*pg_sz = get_min_page_size(mp->socket_id);
> +	else
> +		*pg_sz = getpagesize();
> +
> +	return 0;
> +}
> +
>   /* Default function to populate the mempool: allocate memory in memzones,
>    * and populate them. Return the number of objects added, or a negative
>    * value on error.
> @@ -425,12 +451,11 @@ rte_mempool_populate_default(struct rte_mempool *mp)
>   	char mz_name[RTE_MEMZONE_NAMESIZE];
>   	const struct rte_memzone *mz;
>   	ssize_t mem_size;
> -	size_t align, pg_sz, pg_shift;
> +	size_t align, pg_sz, pg_shift = 0;
>   	rte_iova_t iova;
>   	unsigned mz_id, n;
>   	int ret;
>   	bool need_iova_contig_obj;
> -	bool alloc_in_ext_mem;
>   
>   	ret = mempool_ops_alloc_once(mp);
>   	if (ret != 0)
> @@ -482,26 +507,13 @@ rte_mempool_populate_default(struct rte_mempool *mp)
>   	 * synonymous with IOVA contiguousness will not hold.
>   	 */
>   
> -	/* check if we can retrieve a valid socket ID */
> -	ret = rte_malloc_heap_socket_is_external(mp->socket_id);
> -	if (ret < 0)
> -		return -EINVAL;
> -	alloc_in_ext_mem = (ret == 1);
>   	need_iova_contig_obj = !(mp->flags & MEMPOOL_F_NO_IOVA_CONTIG);
> +	ret = rte_mempool_get_page_size(mp, &pg_sz);
> +	if (ret < 0)
> +		return ret;
>   
> -	if (!need_iova_contig_obj) {
> -		pg_sz = 0;
> -		pg_shift = 0;
> -	} else if (!alloc_in_ext_mem && rte_eal_iova_mode() == RTE_IOVA_VA) {
> -		pg_sz = 0;
> -		pg_shift = 0;
> -	} else if (rte_eal_has_hugepages() || alloc_in_ext_mem) {
> -		pg_sz = get_min_page_size(mp->socket_id);
> -		pg_shift = rte_bsf32(pg_sz);
> -	} else {
> -		pg_sz = getpagesize();
> +	if (pg_sz != 0)
>   		pg_shift = rte_bsf32(pg_sz);
> -	}
>   
>   	for (mz_id = 0, n = mp->size; n > 0; mz_id++, n -= ret) {
>   		size_t min_chunk_size;
> diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
> index 7bc10e699..00b927989 100644
> --- a/lib/librte_mempool/rte_mempool.h
> +++ b/lib/librte_mempool/rte_mempool.h
> @@ -1692,6 +1692,12 @@ uint32_t rte_mempool_calc_obj_size(uint32_t elt_size, uint32_t flags,
>   void rte_mempool_walk(void (*func)(struct rte_mempool *, void *arg),
>   		      void *arg);
>   
> +/**
> + * @internal Get page size used for mempool object allocation.
> + */
> +int
> +rte_mempool_get_page_size(struct rte_mempool *mp, size_t *pg_sz);
> +
>   #ifdef __cplusplus
>   }
>   #endif
> 


  reply index

Thread overview: 103+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-27 10:49 [PATCH] kni: add IOVA va support for kni Kiran Kumar
2018-09-27 10:58 ` Burakov, Anatoly
2018-10-02 17:05 ` Ferruh Yigit
2019-04-01 17:30   ` Jerin Jacob Kollanukkaran
2019-04-01 18:20     ` Ferruh Yigit
2019-04-01  9:51 ` [PATCH v2] " Kiran Kumar Kokkilagadda
2019-04-03 16:29   ` Ferruh Yigit
2019-04-04  5:03     ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2019-04-04 11:20       ` Ferruh Yigit
2019-04-04 13:29         ` Burakov, Anatoly
2019-04-04  9:57     ` Burakov, Anatoly
2019-04-04 11:21       ` Ferruh Yigit
2019-04-16  4:55   ` [dpdk-dev] [PATCH v3] " kirankumark
2019-04-19 10:38     ` Thomas Monjalon
2019-04-22  4:39     ` [dpdk-dev] [PATCH v4] " kirankumark
2019-04-22  6:15       ` [dpdk-dev] [PATCH v5] " kirankumark
2019-04-26  9:11         ` Burakov, Anatoly
2019-06-25  3:56         ` [dpdk-dev] [PATCH v6 0/4] add IOVA = VA support in KNI vattunuru
2019-06-25  3:56           ` [dpdk-dev] [PATCH v6 1/4] lib/mempool: skip populating mempool objs that falls on page boundaries vattunuru
2019-06-25  3:56           ` [dpdk-dev] [PATCH v6 2/4] lib/kni: add PCI related information vattunuru
2019-06-25 17:41             ` Stephen Hemminger
2019-06-26  3:48               ` [dpdk-dev] [EXT] " Vamsi Krishna Attunuru
2019-06-26 14:58                 ` Stephen Hemminger
2019-06-27  9:43                   ` Vamsi Krishna Attunuru
2019-07-11 16:22             ` [dpdk-dev] " Ferruh Yigit
2019-07-12 11:02               ` [dpdk-dev] [EXT] " Vamsi Krishna Attunuru
2019-07-12 11:11                 ` Ferruh Yigit
2019-06-25  3:56           ` [dpdk-dev] [PATCH v6 3/4] example/kni: add IOVA support for kni application vattunuru
2019-07-11 16:23             ` Ferruh Yigit
2019-06-25  3:57           ` [dpdk-dev] [PATCH v6 4/4] kernel/linux/kni: add IOVA support in kni module vattunuru
2019-07-11 16:30             ` Ferruh Yigit
2019-07-12 10:38               ` [dpdk-dev] [EXT] " Vamsi Krishna Attunuru
2019-07-12 11:10                 ` Ferruh Yigit
2019-07-12 12:27                   ` Vamsi Krishna Attunuru
2019-07-12 16:29                   ` Vamsi Krishna Attunuru
2019-07-15 11:26                     ` Ferruh Yigit
2019-07-15 13:06                       ` Vamsi Krishna Attunuru
2019-07-11 16:43             ` [dpdk-dev] " Stephen Hemminger
2019-06-25 10:00           ` [dpdk-dev] [PATCH v6 0/4] add IOVA = VA support in KNI Burakov, Anatoly
2019-06-25 11:15             ` Jerin Jacob Kollanukkaran
2019-06-25 11:30               ` Burakov, Anatoly
2019-06-25 13:38                 ` Burakov, Anatoly
2019-06-27  9:34                   ` Jerin Jacob Kollanukkaran
2019-07-01 13:51                     ` Vamsi Krishna Attunuru
2019-07-04  6:42                       ` Vamsi Krishna Attunuru
2019-07-04  9:48                         ` Jerin Jacob Kollanukkaran
2019-07-11 16:21                           ` Ferruh Yigit
2019-07-17  9:04           ` [dpdk-dev] [PATCH v7 0/4] kni: add IOVA=VA support vattunuru
2019-07-17  9:04             ` [dpdk-dev] [PATCH v7 1/4] mempool: modify mempool populate() to skip objects from page boundaries vattunuru
2019-07-17 13:36               ` Andrew Rybchenko
2019-07-17 13:47                 ` Olivier Matz
2019-07-17 17:31                 ` Vamsi Krishna Attunuru
2019-07-18  9:28                   ` Andrew Rybchenko
2019-07-18 14:16                     ` Vamsi Krishna Attunuru
2019-07-19 13:38                       ` [dpdk-dev] [RFC 0/4] mempool: avoid objects allocations across pages Olivier Matz
2019-07-19 13:38                         ` [dpdk-dev] [RFC 1/4] mempool: clarify default populate function Olivier Matz
2019-07-19 15:42                           ` Andrew Rybchenko
2019-07-19 13:38                         ` [dpdk-dev] [RFC 2/4] mempool: unalign size when calculating required mem amount Olivier Matz
2019-08-07 15:21                           ` [dpdk-dev] ***Spam*** " Andrew Rybchenko
2019-07-19 13:38                         ` [dpdk-dev] [RFC 3/4] mempool: introduce function to get mempool page size Olivier Matz
2019-08-07 15:21                           ` Andrew Rybchenko [this message]
2019-07-19 13:38                         ` [dpdk-dev] [RFC 4/4] mempool: prevent objects from being across pages Olivier Matz
2019-07-19 14:03                           ` Burakov, Anatoly
2019-07-19 14:11                           ` Burakov, Anatoly
2019-08-07 15:21                           ` Andrew Rybchenko
2019-07-23  5:37                         ` [dpdk-dev] [RFC 0/4] mempool: avoid objects allocations " Vamsi Krishna Attunuru
2019-08-07 15:21                         ` [dpdk-dev] ***Spam*** " Andrew Rybchenko
2019-07-17  9:04             ` [dpdk-dev] [PATCH v7 2/4] kni: add IOVA = VA support in KNI lib vattunuru
2019-07-17  9:04             ` [dpdk-dev] [PATCH v7 3/4] kni: add IOVA=VA support in KNI module vattunuru
2019-07-17  9:04             ` [dpdk-dev] [PATCH v7 4/4] kni: modify IOVA mode checks to support VA vattunuru
2019-07-23  5:38             ` [dpdk-dev] [PATCH v8 0/5] kni: add IOVA=VA support vattunuru
2019-07-23  5:38               ` [dpdk-dev] [PATCH v8 1/5] mempool: populate mempool with page sized chunks of memory vattunuru
2019-07-23 11:08                 ` Andrew Rybchenko
2019-07-23 12:28                   ` Vamsi Krishna Attunuru
2019-07-23 19:33                     ` Andrew Rybchenko
2019-07-24  7:09                       ` Vamsi Krishna Attunuru
2019-07-24  7:27                         ` Andrew Rybchenko
2019-07-29  6:25                           ` Vamsi Krishna Attunuru
2019-07-23  5:38               ` [dpdk-dev] [PATCH v8 2/5] add IOVA -VA support in KNI lib vattunuru
2019-07-23 10:54                 ` Andrew Rybchenko
2019-07-23  5:38               ` [dpdk-dev] [PATCH v8 3/5] kni: add app specific mempool create & free routine vattunuru
2019-07-23 10:50                 ` Andrew Rybchenko
2019-07-23 11:01                   ` Vamsi Krishna Attunuru
2019-07-23  5:38               ` [dpdk-dev] [PATCH v8 4/5] kni: add IOVA=VA support in KNI module vattunuru
2019-07-23  5:38               ` [dpdk-dev] [PATCH v8 5/5] kni: modify IOVA mode checks to support VA vattunuru
2019-07-24  7:14               ` [dpdk-dev] [PATCH v8 0/5] kni: add IOVA=VA support Vamsi Krishna Attunuru
2019-07-29 12:13               ` [dpdk-dev] [PATCH v9 " vattunuru
2019-07-29 12:13                 ` [dpdk-dev] [PATCH v9 1/5] mempool: populate mempool with the page sized chunks of memory vattunuru
2019-07-29 12:41                   ` Andrew Rybchenko
2019-07-29 13:33                     ` [dpdk-dev] [EXT] " Vamsi Krishna Attunuru
2019-08-16  6:12                   ` [dpdk-dev] [PATCH v10 0/5] kni: add IOVA=VA support vattunuru
2019-08-16  6:12                     ` [dpdk-dev] [PATCH v10 1/5] mempool: populate mempool with the page sized chunks vattunuru
2019-08-16  6:12                     ` [dpdk-dev] [PATCH v10 2/5] kni: add IOVA=VA support in KNI lib vattunuru
2019-08-16  6:12                     ` [dpdk-dev] [PATCH v10 3/5] kni: add app specific mempool create and free routines vattunuru
2019-08-16  6:12                     ` [dpdk-dev] [PATCH v10 4/5] kni: add IOVA=VA support in KNI module vattunuru
2019-08-16  6:12                     ` [dpdk-dev] [PATCH v10 5/5] kni: modify IOVA mode checks to support VA vattunuru
2019-07-29 12:13                 ` [dpdk-dev] [PATCH v9 2/5] kni: add IOVA=VA support in KNI lib vattunuru
2019-07-29 12:24                   ` Igor Ryzhov
2019-07-29 13:22                     ` [dpdk-dev] [EXT] " Vamsi Krishna Attunuru
2019-07-29 12:13                 ` [dpdk-dev] [PATCH v9 3/5] kni: add app specific mempool create & free routine vattunuru
2019-07-29 12:13                 ` [dpdk-dev] [PATCH v9 4/5] kni: add IOVA=VA support in KNI module vattunuru
2019-07-29 12:13                 ` [dpdk-dev] [PATCH v9 5/5] kni: modify IOVA mode checks to support VA vattunuru
2019-04-23  8:56       ` [dpdk-dev] [PATCH v4] kni: add IOVA va support for kni Burakov, Anatoly

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