diff options
author | Wei Liu <wei.liu2@citrix.com> | 2015-09-10 11:18:57 +0100 |
---|---|---|
committer | Sasha Levin <sasha.levin@oracle.com> | 2016-02-15 15:42:45 -0500 |
commit | 1ed33008e58c325a3e9159134ee2af96f88f12cd (patch) | |
tree | bba065354ae8f62d609b1b39f2b10de867a441d0 | |
parent | 3c02ca42ebdb6d1764e187c196fe89463a3a3f13 (diff) |
xen-netback: respect user provided max_queues
[ Upstream commit 4c82ac3c37363e8c4ded6a5fe1ec5fa756b34df3 ]
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: Johnny Strom <johnny.strom@linuxsolutions.fi>
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
-rw-r--r-- | drivers/net/xen-netback/netback.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index c39aace4f642..63f94134dfce 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -2185,8 +2185,11 @@ static int __init netback_init(void) if (!xen_domain()) return -ENODEV; - /* Allow as many queues as there are CPUs, by default */ - xenvif_max_queues = num_online_cpus(); + /* Allow as many queues as there are CPUs if user has not + * specified a value. + */ + if (xenvif_max_queues == 0) + xenvif_max_queues = num_online_cpus(); 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", |