diff mbox series

[net-next,3/3] ibmvnic: Update XPS assignments during affinity binding

Message ID 20221110213218.28662-4-nnac123@linux.ibm.com (mailing list archive)
State Accepted
Commit df8f66d02df7b44516635edbc8c17b1311cfa0d8
Delegated to: Netdev Maintainers
Headers show
Series ibmvnic: Introduce affinity hint support | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 9 maintainers not CCed: npiggin@gmail.com pabeni@redhat.com davem@davemloft.net danymadden@us.ibm.com christophe.leroy@csgroup.eu edumazet@google.com kuba@kernel.org linuxppc-dev@lists.ozlabs.org mpe@ellerman.id.au
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 16 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Nick Child Nov. 10, 2022, 9:32 p.m. UTC 
Transmit Packet Steering (XPS) maps cpu numbers to transmit
queues. By running the same connection on the same set of cpu's,
contention for the queue and cache miss rate can be minimized.
When assigning a cpu mask for a tranmit queues irq number, assign
the same cpu mask as the set of cpu's that XPS should use for that
queue.

Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: Dany Madden <drt@linux.ibm.com>
Signed-off-by: Nick Child <nnac123@linux.ibm.com>
Reviewed-by: Rick Lindsley <ricklind@linux.ibm.com>
Reviewed-by: Haren Myneni <haren@linux.ibm.com>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 2fc0d50dbb86..e19a6bb3f444 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -279,6 +279,16 @@  static void ibmvnic_set_affinity(struct ibmvnic_adapter *adapter)
 						stride);
 		if (rc)
 			goto out;
+
+		if (!queue)
+			continue;
+
+		rc = __netif_set_xps_queue(adapter->netdev,
+					   cpumask_bits(queue->affinity_mask),
+					   i, XPS_CPUS);
+		if (rc)
+			netdev_warn(adapter->netdev, "%s: Set XPS on queue %d failed, rc = %d.\n",
+				    __func__, i, rc);
 	}
 
 	for (i = 0; i < num_rxqs; i++) {