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| author | Hariprasad Shenai <hariprasad@chelsio.com> | 2016-06-08 18:09:08 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-06-08 11:13:58 -0700 |
| commit | 40e4e713ebb279eb569584836d7cc6b799ed7f7f (patch) | |
| tree | c771486aef77ee0c1127b9083bdde96d04ac0cd8 /net/core | |
| parent | df0437e147b3e562410d9705af4f0620654b07bb (diff) | |
| download | linux-40e4e713ebb279eb569584836d7cc6b799ed7f7f.tar.bz2 | |
net: Reduce queue allocation to one in kdump kernel
When in kdump kernel, reduce memory usage by only using a single Queue
Set for multiqueue devices. So make netif_get_num_default_rss_queues()
return one, when in kdump kernel.
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/dev.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index e0bcc39f4a7d..c43c9d2a88cf 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -139,6 +139,7 @@ #include <linux/hrtimer.h> #include <linux/netfilter_ingress.h> #include <linux/sctp.h> +#include <linux/crash_dump.h> #include "net-sysfs.h" @@ -2249,7 +2250,8 @@ EXPORT_SYMBOL(netif_set_real_num_rx_queues); */ int netif_get_num_default_rss_queues(void) { - return min_t(int, DEFAULT_MAX_NUM_RSS_QUEUES, num_online_cpus()); + return is_kdump_kernel() ? + 1 : min_t(int, DEFAULT_MAX_NUM_RSS_QUEUES, num_online_cpus()); } EXPORT_SYMBOL(netif_get_num_default_rss_queues); |