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| author | Wei Liu <wei.liu2@citrix.com> | 2015-09-10 13:18:57 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-09-10 20:11:48 +0300 |
| commit | 4c82ac3c37363e8c4ded6a5fe1ec5fa756b34df3 (patch) | |
| tree | 04627a9acfd0dfb8f56d69bdb9d24e976d82cbc1 | |
| parent | 420203204eada39cfe0e8eb65e609da7b209cf33 (diff) | |
| download | linux-4c82ac3c37363e8c4ded6a5fe1ec5fa756b34df3.tar.xz | |
xen-netback: 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.
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>
| -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 b588b1a08cd4..abc1381264fc 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -2114,8 +2114,11 @@ 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", |