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cxgb4: reduce resource allocation in kdump kernel

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When is_kdump_kernel() is true, reduce memory footprint of
cxgb4 by using a single "Queue Set".

Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ganesh Goudar 2017-05-16 21:17:42 +05:30 committed by David S. Miller
parent 9ad098037d
commit 85eacf3f42
1 changed files with 6 additions and 6 deletions
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12
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
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@ -891,7 +891,7 @@ static u16 cxgb_select_queue(struct net_device *dev, struct sk_buff *skb,
* The skb's priority is determined via the VLAN Tag Priority Code
* Point field.
*/
if (cxgb4_dcb_enabled(dev)) {
if (cxgb4_dcb_enabled(dev) && !is_kdump_kernel()) {
u16 vlan_tci;
int err;
@ -4007,10 +4007,7 @@ static void cfg_queues(struct adapter *adap)
/* Reduce memory usage in kdump environment, disable all offload.
*/
if (is_kdump_kernel()) {
adap->params.offload = 0;
adap->params.crypto = 0;
} else if (is_uld(adap) && t4_uld_mem_alloc(adap)) {
if (is_kdump_kernel() || (is_uld(adap) && t4_uld_mem_alloc(adap))) {
adap->params.offload = 0;
adap->params.crypto = 0;
}
@ -4031,7 +4028,7 @@ static void cfg_queues(struct adapter *adap)
struct port_info *pi = adap2pinfo(adap, i);
pi->first_qset = qidx;
pi->nqsets = 8;
pi->nqsets = is_kdump_kernel() ? 1 : 8;
qidx += pi->nqsets;
}
#else /* !CONFIG_CHELSIO_T4_DCB */
@ -4044,6 +4041,9 @@ static void cfg_queues(struct adapter *adap)
if (q10g > netif_get_num_default_rss_queues())
q10g = netif_get_num_default_rss_queues();
if (is_kdump_kernel())
q10g = 1;
for_each_port(adap, i) {
struct port_info *pi = adap2pinfo(adap, i);