diff mbox series

[net-next,V4,3/3] enic: Use NUMA distances logic when setting affinity hints

Message ID 20220728191203.4055-4-tariqt@nvidia.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series Introduce and use NUMA distance metrics | 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: 8 this patch: 8
netdev/cc_maintainers success CCed 7 of 7 maintainers
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: 8 this patch: 8
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 32 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Tariq Toukan July 28, 2022, 7:12 p.m. UTC 
Use the new CPU spread API to sort cpus preference of remote NUMA nodes
according to their distance.

Cc: Christian Benvenuti <benve@cisco.com>
Cc: Govindarajulu Varadarajan <_govind@gmx.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 drivers/net/ethernet/cisco/enic/enic_main.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index 372fb7b3a282..9de3c3ffa1e3 100644
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -44,6 +44,7 @@ 
 #include <linux/cpu_rmap.h>
 #endif
 #include <linux/crash_dump.h>
+#include <linux/sched/topology.h>
 #include <net/busy_poll.h>
 #include <net/vxlan.h>
 
@@ -114,8 +115,14 @@  static struct enic_intr_mod_range mod_range[ENIC_MAX_LINK_SPEEDS] = {
 static void enic_init_affinity_hint(struct enic *enic)
 {
 	int numa_node = dev_to_node(&enic->pdev->dev);
+	u16 *cpus;
 	int i;
 
+	cpus = kcalloc(enic->intr_count, sizeof(*cpus), GFP_KERNEL);
+	if (!cpus)
+		return;
+
+	sched_cpus_set_spread(numa_node, cpus, enic->intr_count);
 	for (i = 0; i < enic->intr_count; i++) {
 		if (enic_is_err_intr(enic, i) || enic_is_notify_intr(enic, i) ||
 		    (cpumask_available(enic->msix[i].affinity_mask) &&
@@ -123,9 +130,10 @@  static void enic_init_affinity_hint(struct enic *enic)
 			continue;
 		if (zalloc_cpumask_var(&enic->msix[i].affinity_mask,
 				       GFP_KERNEL))
-			cpumask_set_cpu(cpumask_local_spread(i, numa_node),
+			cpumask_set_cpu(cpus[i],
 					enic->msix[i].affinity_mask);
 	}
+	kfree(cpus);
 }
 
 static void enic_free_affinity_hint(struct enic *enic)