diff options
| author |   Shannon Nelson <snelson@pensando.io> | 2021-07-27 10:43:25 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-07-27 20:15:21 +0100 |
| commit | c0b03e8399505a5aafe3a38e287213f523d890af (patch) | |
| tree | bf4936617c3adfd183ad5de88ec17d4d0b55fb78 /drivers/net/ethernet/pensando/ionic/ionic_lif.c | |
| parent | Merge branch 'ndo_ioctl-rework' (diff) | |
| download | linux-dev-c0b03e8399505a5aafe3a38e287213f523d890af.tar.xz linux-dev-c0b03e8399505a5aafe3a38e287213f523d890af.zip | |
ionic: minimize resources when under kdump
When running in a small kdump kernel, we can play nice and
minimize our resource use to help make sure that kdump is
successful in its mission.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/pensando/ionic/ionic_lif.c')
| -rw-r--r-- | drivers/net/ethernet/pensando/ionic/ionic_lif.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c index 537c2907b91e..453994e57d86 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -11,6 +11,7 @@ #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/cpumask.h> +#include <linux/crash_dump.h> #include "ionic.h" #include "ionic_bus.h" @@ -2834,8 +2835,14 @@ int ionic_lif_alloc(struct ionic *ionic) lif->ionic = ionic; lif->index = 0; - lif->ntxq_descs = IONIC_DEF_TXRX_DESC; - lif->nrxq_descs = IONIC_DEF_TXRX_DESC; + + if (is_kdump_kernel()) { + lif->ntxq_descs = IONIC_MIN_TXRX_DESC; + lif->nrxq_descs = IONIC_MIN_TXRX_DESC; + } else { + lif->ntxq_descs = IONIC_DEF_TXRX_DESC; + lif->nrxq_descs = IONIC_DEF_TXRX_DESC; + } /* Convert the default coalesce value to actual hw resolution */ lif->rx_coalesce_usecs = IONIC_ITR_COAL_USEC_DEFAULT; @@ -3519,6 +3526,7 @@ int ionic_lif_size(struct ionic *ionic) unsigned int min_intrs; int err; + /* retrieve basic values from FW */ lc = &ident->lif.eth.config; dev_nintrs = le32_to_cpu(ident->dev.nintrs); neqs_per_lif = le32_to_cpu(ident->lif.rdma.eq_qtype.qid_count); @@ -3526,6 +3534,15 @@ int ionic_lif_size(struct ionic *ionic) ntxqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_TXQ]); nrxqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_RXQ]); + /* limit values to play nice with kdump */ + if (is_kdump_kernel()) { + dev_nintrs = 2; + neqs_per_lif = 0; + nnqs_per_lif = 0; + ntxqs_per_lif = 1; + nrxqs_per_lif = 1; + } + /* reserve last queue id for hardware timestamping */ if (lc->features & cpu_to_le64(IONIC_ETH_HW_TIMESTAMP)) { if (ntxqs_per_lif <= 1 || nrxqs_per_lif <= 1) { |