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* [dpdk-dev] [PATCH] eal: change max hugepage sizes to 4
@ 2019-08-07 10:12 Gagandeep Singh
  2019-08-07 12:00 ` David Marchand
                   ` (2 more replies)
  0 siblings, 3 replies; 19+ messages in thread
From: Gagandeep Singh @ 2019-08-07 10:12 UTC (permalink / raw)
  To: dev, thomas
  Cc: anatoly.burakov, olivier.matz, arybchenko, Gagandeep Singh, Nipun Gupta

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 */
 
 /*
  * internal configuration structure for the number, size and
-- 
2.17.1


^ permalink raw reply	[flat|nested] 19+ messages in thread

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Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-08-07 10:12 [dpdk-dev] [PATCH] eal: change max hugepage sizes to 4 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
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

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