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xen-netfront: respect user provided max_queues 

Originally that parameter was always reset to num_online_cpus during
module initialisation, which renders it useless.

The fix is to only set max_queues to num_online_cpus when user has not
provided a value.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Tested-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wei Liu 2015-09-10 11:18:58 +01:00 committed by David S. Miller
parent 4c82ac3c37
commit 32a844056f
1 changed files with 5 additions and 2 deletions
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7
drivers/net/xen-netfront.c
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@ -2132,8 +2132,11 @@ static int __init netif_init(void)
pr_info("Initialising Xen virtual ethernet driver\n");
/* Allow as many queues as there are CPUs, by default */
xennet_max_queues = num_online_cpus();
/* Allow as many queues as there are CPUs if user has not
* specified a value.
*/
if (xennet_max_queues == 0)
xennet_max_queues = num_online_cpus();
return xenbus_register_frontend(&netfront_driver);
}