Commit 7b16eb91 authored by Michael Chan's avatar Michael Chan Committed by Greg Kroah-Hartman

bnxt_en: Reduce memory usage when running in kdump kernel.

[ Upstream commit d629522e ]

Skip RDMA context memory allocations, reduce to 1 ring, and disable
TPA when running in the kdump kernel.  Without this patch, the driver
fails to initialize with memory allocation errors when running in a
typical kdump kernel.

Fixes: cf6daed0 ("bnxt_en: Increase context memory allocations on 57500 chips for RDMA.")
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 45e8cd22
......@@ -6342,7 +6342,7 @@ static int bnxt_alloc_ctx_mem(struct bnxt *bp)
if (!ctx || (ctx->flags & BNXT_CTX_FLAG_INITED))
return 0;
if (bp->flags & BNXT_FLAG_ROCE_CAP) {
if ((bp->flags & BNXT_FLAG_ROCE_CAP) && !is_kdump_kernel()) {
pg_lvl = 2;
extra_qps = 65536;
extra_srqs = 8192;
......@@ -10340,7 +10340,7 @@ static int bnxt_set_dflt_rings(struct bnxt *bp, bool sh)
if (sh)
bp->flags |= BNXT_FLAG_SHARED_RINGS;
dflt_rings = netif_get_num_default_rss_queues();
dflt_rings = is_kdump_kernel() ? 1 : netif_get_num_default_rss_queues();
/* Reduce default rings on multi-port cards so that total default
* rings do not exceed CPU count.
*/
......
......@@ -20,6 +20,7 @@
#include <linux/interrupt.h>
#include <linux/rhashtable.h>
#include <linux/crash_dump.h>
#include <net/devlink.h>
#include <net/dst_metadata.h>
#include <net/xdp.h>
......@@ -1367,7 +1368,8 @@ struct bnxt {
#define BNXT_CHIP_TYPE_NITRO_A0(bp) ((bp)->flags & BNXT_FLAG_CHIP_NITRO_A0)
#define BNXT_RX_PAGE_MODE(bp) ((bp)->flags & BNXT_FLAG_RX_PAGE_MODE)
#define BNXT_SUPPORTS_TPA(bp) (!BNXT_CHIP_TYPE_NITRO_A0(bp) && \
!(bp->flags & BNXT_FLAG_CHIP_P5))
!(bp->flags & BNXT_FLAG_CHIP_P5) && \
!is_kdump_kernel())
/* Chip class phase 5 */
#define BNXT_CHIP_P5(bp) \
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment