[PATCH net-next V4 3/3] enic: Use NUMA distances logic when setting affinity hints
From: Tariq Toukan <tariqt@nvidia.com>
Date: 2022-07-28 19:13:50
Also in:
lkml
Subsystem:
cisco vic ethernet nic driver, networking drivers, the rest · Maintainers:
Satish Kharat, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Use the new CPU spread API to sort cpus preference of remote NUMA nodes according to their distance. Cc: Christian Benvenuti <redacted> Cc: Govindarajulu Varadarajan <redacted> Reviewed-by: Gal Pressman <redacted> 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 --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)
--
2.21.0