Commit 40e4e713 authored by Hariprasad Shenai's avatar Hariprasad Shenai Committed by David S. Miller

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: default avatarHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent df0437e1
...@@ -139,6 +139,7 @@ ...@@ -139,6 +139,7 @@
#include <linux/hrtimer.h> #include <linux/hrtimer.h>
#include <linux/netfilter_ingress.h> #include <linux/netfilter_ingress.h>
#include <linux/sctp.h> #include <linux/sctp.h>
#include <linux/crash_dump.h>
#include "net-sysfs.h" #include "net-sysfs.h"
...@@ -2249,7 +2250,8 @@ EXPORT_SYMBOL(netif_set_real_num_rx_queues); ...@@ -2249,7 +2250,8 @@ EXPORT_SYMBOL(netif_set_real_num_rx_queues);
*/ */
int netif_get_num_default_rss_queues(void) 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); EXPORT_SYMBOL(netif_get_num_default_rss_queues);
......
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