[dpdk-dev,v3] examples/vhost: reduce number of hugepages needed

  Add #ifndef MAX_QUEUES to change MAX_QUEUES at compile time if needed.
Change MAX_QUEUES from 512 to 128 to reduce the number of hugepages
required by the vhost-switch program.

To change MAX_QUEUES add '-D MAX_QUEUES=512' to the EXTRA_CFLAGS variable,
before building the application.

Changes in v3:
Added #ifndef MAX_QUEUES line before #define MAX_QUEUES 128

Changes in v2:
remove comment added before #define MAX_QUEUES in v1 patch.

Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
---
 examples/vhost/main.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
  

> -----Original Message-----
> From: Iremonger, Bernard
> Sent: Thursday, December 10, 2015 3:49 PM
> To: dev@dpdk.org
> Cc: Xie, Huawei; yuanhan.liu@linux.intel.com; Ananyev, Konstantin; Iremonger, Bernard
> Subject: [PATCH v3] examples/vhost: reduce number of hugepages needed
> 
> Add #ifndef MAX_QUEUES to change MAX_QUEUES at compile time if needed.
> Change MAX_QUEUES from 512 to 128 to reduce the number of hugepages
> required by the vhost-switch program.
> 
> To change MAX_QUEUES add '-D MAX_QUEUES=512' to the EXTRA_CFLAGS variable,
> before building the application.
> 
> Changes in v3:
> Added #ifndef MAX_QUEUES line before #define MAX_QUEUES 128
> 
> Changes in v2:
> remove comment added before #define MAX_QUEUES in v1 patch.
> 
> Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
> ---
>  examples/vhost/main.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/examples/vhost/main.c b/examples/vhost/main.c
> index b30f1bd..2dcdacb 100644
> --- a/examples/vhost/main.c
> +++ b/examples/vhost/main.c
> @@ -1,7 +1,7 @@
>  /*-
>   *   BSD LICENSE
>   *
> - *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> + *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
>   *   All rights reserved.
>   *
>   *   Redistribution and use in source and binary forms, with or without
> @@ -53,7 +53,9 @@
> 
>  #include "main.h"
> 
> -#define MAX_QUEUES 512
> +#ifndef MAX_QUEUES
> +#define MAX_QUEUES 128
> +#endif
> 
>  /* the maximum number of external ports supported */
>  #define MAX_SUP_PORTS 1
> --

Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

> 2.6.3
  

> > Add #ifndef MAX_QUEUES to change MAX_QUEUES at compile time if needed.
> > Change MAX_QUEUES from 512 to 128 to reduce the number of hugepages
> > required by the vhost-switch program.
> > 
> > To change MAX_QUEUES add '-D MAX_QUEUES=512' to the EXTRA_CFLAGS variable,
> > before building the application.
> > 
> > Changes in v3:
> > Added #ifndef MAX_QUEUES line before #define MAX_QUEUES 128
> > 
> > Changes in v2:
> > remove comment added before #define MAX_QUEUES in v1 patch.
> > 
> > Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
> 
> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

Applied, thanks