Commit 21edf40b authored by Wei Liu's avatar Wei Liu Committed by Greg Kroah-Hartman

xen-netback: respect user provided max_queues

[ Upstream commit 4c82ac3c ]

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.
Reported-by: default avatarJohnny Strom <johnny.strom@linuxsolutions.fi>
Signed-off-by: default avatarWei Liu <wei.liu2@citrix.com>
Reviewed-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
Acked-by: default avatarIan Campbell <ian.campbell@citrix.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 534e9016
...@@ -2007,8 +2007,11 @@ static int __init netback_init(void) ...@@ -2007,8 +2007,11 @@ static int __init netback_init(void)
if (!xen_domain()) if (!xen_domain())
return -ENODEV; return -ENODEV;
/* Allow as many queues as there are CPUs, by default */ /* Allow as many queues as there are CPUs if user has not
xenvif_max_queues = num_online_cpus(); * specified a value.
*/
if (xenvif_max_queues == 0)
xenvif_max_queues = num_online_cpus();
if (fatal_skb_slots < XEN_NETBK_LEGACY_SLOTS_MAX) { if (fatal_skb_slots < XEN_NETBK_LEGACY_SLOTS_MAX) {
pr_info("fatal_skb_slots too small (%d), bump it to XEN_NETBK_LEGACY_SLOTS_MAX (%d)\n", pr_info("fatal_skb_slots too small (%d), bump it to XEN_NETBK_LEGACY_SLOTS_MAX (%d)\n",
......
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