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Commit 85eacf3f authored by Ganesh Goudar's avatar Ganesh Goudar Committed by David S. Miller
Browse files

cxgb4: reduce resource allocation in kdump kernel 



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

Signed-off-by: default avatarGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9ad09803

drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c

+6 −6
Original line number Diff line number Diff line
@@ -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);