From: <gregkh@linuxfoundation.org>
To: sgoutham@cavium.com, aleksey.makarov@cavium.com,
alexander.levin@microsoft.com, cjacob@caviumnetworks.com,
davem@davemloft.net, gregkh@linuxfoundation.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "net: thunderx: Set max queue count taking XDP_TX into account" has been added to the 4.15-stable tree
Date: Fri, 16 Mar 2018 15:16:03 +0100 [thread overview]
Message-ID: <152120976313452@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
net: thunderx: Set max queue count taking XDP_TX into account
to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-thunderx-set-max-queue-count-taking-xdp_tx-into-account.patch
and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From foo@baz Fri Mar 16 15:11:07 CET 2018
From: Sunil Goutham <sgoutham@cavium.com>
Date: Fri, 24 Nov 2017 15:04:03 +0300
Subject: net: thunderx: Set max queue count taking XDP_TX into account
From: Sunil Goutham <sgoutham@cavium.com>
[ Upstream commit 87de083857aa269fb171ef0b39696b2888361c58 ]
on T81 there are only 4 cores, hence setting max queue count to 4
would leave nothing for XDP_TX. This patch fixes this by doubling
max queue count in above scenarios.
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: cjacob <cjacob@caviumnetworks.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/cavium/thunder/nicvf_main.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -1833,6 +1833,11 @@ static int nicvf_probe(struct pci_dev *p
nic->pdev = pdev;
nic->pnicvf = nic;
nic->max_queues = qcount;
+ /* If no of CPUs are too low, there won't be any queues left
+ * for XDP_TX, hence double it.
+ */
+ if (!nic->t88)
+ nic->max_queues *= 2;
/* MAP VF's configuration registers */
nic->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
Patches currently in stable-queue which might be from sgoutham@cavium.com are
queue-4.15/net-thunderx-set-max-queue-count-taking-xdp_tx-into-account.patch
reply other threads:[~2018-03-16 14:17 UTC|newest]
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