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Message-Id: <1494949662-8339-1-git-send-email-ganeshgr@chelsio.com> Date: Tue, 16 May 2017 21:17:42 +0530 From: Ganesh Goudar <ganeshgr@...lsio.com> To: netdev@...r.kernel.org, davem@...emloft.net Cc: nirranjan@...lsio.com, indranil@...lsio.com, Ganesh Goudar <ganeshgr@...lsio.com> Subject: [PATCH net-next] 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: Ganesh Goudar <ganeshgr@...lsio.com> --- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index 38a5c67..4249ffb 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -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); -- 2.1.0
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