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From: Stephen Hemminger <stephen@networkplumber.org>
To: Gagandeep Singh <g.singh@nxp.com>
Cc: dev@dpdk.org, thomas@monjalon.net, anatoly.burakov@intel.com,
	olivier.matz@6wind.com, arybchenko@solarflare.com,
	Nipun Gupta <nipun.gupta@nxp.com>
Subject: Re: [dpdk-dev] [PATCH] eal: change max hugepage sizes to 4
Date: Wed, 7 Aug 2019 08:27:20 -0700
Message-ID: <20190807082720.68f4d3f4@hermes.lan> (raw)
In-Reply-To: <20190807101204.21614-1-g.singh@nxp.com>

On Wed,  7 Aug 2019 15:42:04 +0530
Gagandeep Singh <g.singh@nxp.com> wrote:

> DPDK currently is supporting maximum 3 hugepage,
> sizes whereas system can support more than this e.g.
> 64K, 2M, 32M and 1G.
> 
> Having these four hugepage sizes available to use by DPDK,
> which is valid in case of '--in-memory' EAL option or
> using 4 separate mount points for each hugepage size;
> hugepage_info_init() API reports an error.
> 
> This change increases the maximum supported mount points
> to 4.
> 
> Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
> Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
> ---
> 
> On ARM platform when the translation granule is 4KB,
> there are 4 hugepage sizes supported.
> On kernel 5.2, we can see below directories in
> /sys/kernel/mm/hugepages:
> 
> hugepages-1048576kB
> hugepages-2048kB
> hugepages-32768kB
> hugepages-64kB
> 
>  lib/librte_eal/common/eal_internal_cfg.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/librte_eal/common/eal_internal_cfg.h b/lib/librte_eal/common/eal_internal_cfg.h
> index edff09d07..abb7ec913 100644
> --- a/lib/librte_eal/common/eal_internal_cfg.h
> +++ b/lib/librte_eal/common/eal_internal_cfg.h
> @@ -15,7 +15,7 @@
>  
>  #include "eal_thread.h"
>  
> -#define MAX_HUGEPAGE_SIZES 3  /**< support up to 3 page sizes */
> +#define MAX_HUGEPAGE_SIZES 4  /**< support up to 4 page sizes */

At least this is hidden in internal config. 

  parent reply index

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-07 10:12 Gagandeep Singh
2019-08-07 12:00 ` David Marchand
2019-08-07 12:07   ` Thomas Monjalon
2019-08-07 13:28     ` Hemant Agrawal
2019-08-08  7:31       ` Thomas Monjalon
2019-08-12  9:43         ` Burakov, Anatoly
2019-08-12  9:49           ` David Marchand
2019-08-12 10:01             ` Thomas Monjalon
2019-08-12 10:38             ` Burakov, Anatoly
2019-08-08  7:33       ` David Marchand
2019-08-08  9:00         ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-08-08 10:37         ` [dpdk-dev] " Hemant Agrawal
2019-08-08 12:29           ` Steve Capper
2019-08-08 12:39             ` David Marchand
2019-08-12  9:42       ` Burakov, Anatoly
2019-08-07 15:27 ` Stephen Hemminger [this message]
2019-08-08 12:13 ` [dpdk-dev] [PATCH v2] eal: change max hugepage sizes to 4 for ARM platforms Gagandeep Singh
2019-08-08 12:37   ` [dpdk-dev] [dpdk-stable] " David Marchand
2019-08-08 15:26     ` Thomas Monjalon
2019-08-07 12:47 [dpdk-dev] [PATCH] eal: change max hugepage sizes to 4 Gagandeep Singh
2019-08-07 12:53 Gagandeep Singh
2019-08-07 14:09 ` Honnappa Nagarahalli
2019-08-08  9:00 Gagandeep Singh
2019-08-08  9:22 ` David Marchand

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