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Message-ID: <20250104004314.208259-7-ahmed.zaki@intel.com>
Date: Fri, 3 Jan 2025 17:43:14 -0700
From: Ahmed Zaki <ahmed.zaki@...el.com>
To: netdev@...r.kernel.org
Cc: intel-wired-lan@...ts.osuosl.org,
andrew+netdev@...n.ch,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
davem@...emloft.net,
michael.chan@...adcom.com,
tariqt@...dia.com,
anthony.l.nguyen@...el.com,
przemyslaw.kitszel@...el.com,
jdamato@...tly.com,
shayd@...dia.com,
akpm@...ux-foundation.org,
Ahmed Zaki <ahmed.zaki@...el.com>
Subject: [PATCH net-next v3 6/6] idpf: use napi's irq affinity
Delete the driver CPU affinity info and use the core's napi config
instead.
Signed-off-by: Ahmed Zaki <ahmed.zaki@...el.com>
---
drivers/net/ethernet/intel/idpf/idpf_lib.c | 1 +
drivers/net/ethernet/intel/idpf/idpf_txrx.c | 22 +++++++--------------
drivers/net/ethernet/intel/idpf/idpf_txrx.h | 6 ++----
3 files changed, 10 insertions(+), 19 deletions(-)
diff --git a/drivers/net/ethernet/intel/idpf/idpf_lib.c b/drivers/net/ethernet/intel/idpf/idpf_lib.c
index b4fbb99bfad2..d54be068f53f 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_lib.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_lib.c
@@ -814,6 +814,7 @@ static int idpf_cfg_netdev(struct idpf_vport *vport)
netdev->hw_features |= dflt_features | offloads;
netdev->hw_enc_features |= dflt_features | offloads;
idpf_set_ethtool_ops(netdev);
+ netif_enable_irq_affinity(netdev);
SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
/* carrier off on init to avoid Tx hangs */
diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.c b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
index 2fa9c36e33c9..f6b5b45a061c 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_txrx.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
@@ -3554,8 +3554,6 @@ void idpf_vport_intr_rel(struct idpf_vport *vport)
q_vector->tx = NULL;
kfree(q_vector->rx);
q_vector->rx = NULL;
-
- free_cpumask_var(q_vector->affinity_mask);
}
kfree(vport->q_vectors);
@@ -3582,8 +3580,6 @@ static void idpf_vport_intr_rel_irq(struct idpf_vport *vport)
vidx = vport->q_vector_idxs[vector];
irq_num = adapter->msix_entries[vidx].vector;
- /* clear the affinity_mask in the IRQ descriptor */
- irq_set_affinity_hint(irq_num, NULL);
kfree(free_irq(irq_num, q_vector));
}
}
@@ -3771,8 +3767,6 @@ static int idpf_vport_intr_req_irq(struct idpf_vport *vport)
"Request_irq failed, error: %d\n", err);
goto free_q_irqs;
}
- /* assign the mask for this irq */
- irq_set_affinity_hint(irq_num, q_vector->affinity_mask);
}
return 0;
@@ -4184,7 +4178,8 @@ static int idpf_vport_intr_init_vec_idx(struct idpf_vport *vport)
static void idpf_vport_intr_napi_add_all(struct idpf_vport *vport)
{
int (*napi_poll)(struct napi_struct *napi, int budget);
- u16 v_idx;
+ u16 v_idx, qv_idx;
+ int irq_num;
if (idpf_is_queue_model_split(vport->txq_model))
napi_poll = idpf_vport_splitq_napi_poll;
@@ -4193,12 +4188,12 @@ static void idpf_vport_intr_napi_add_all(struct idpf_vport *vport)
for (v_idx = 0; v_idx < vport->num_q_vectors; v_idx++) {
struct idpf_q_vector *q_vector = &vport->q_vectors[v_idx];
+ qv_idx = vport->q_vector_idxs[v_idx];
+ irq_num = vport->adapter->msix_entries[qv_idx].vector;
- netif_napi_add(vport->netdev, &q_vector->napi, napi_poll);
-
- /* only set affinity_mask if the CPU is online */
- if (cpu_online(v_idx))
- cpumask_set_cpu(v_idx, q_vector->affinity_mask);
+ netif_napi_add_config(vport->netdev, &q_vector->napi,
+ napi_poll, v_idx);
+ netif_napi_set_irq(&q_vector->napi, irq_num);
}
}
@@ -4242,9 +4237,6 @@ int idpf_vport_intr_alloc(struct idpf_vport *vport)
q_vector->rx_intr_mode = IDPF_ITR_DYNAMIC;
q_vector->rx_itr_idx = VIRTCHNL2_ITR_IDX_0;
- if (!zalloc_cpumask_var(&q_vector->affinity_mask, GFP_KERNEL))
- goto error;
-
q_vector->tx = kcalloc(txqs_per_vector, sizeof(*q_vector->tx),
GFP_KERNEL);
if (!q_vector->tx)
diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.h b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
index 0f71a6f5557b..13251f63c7c3 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_txrx.h
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
@@ -401,7 +401,6 @@ struct idpf_intr_reg {
* @rx_intr_mode: Dynamic ITR or not
* @rx_itr_idx: RX ITR index
* @v_idx: Vector index
- * @affinity_mask: CPU affinity mask
*/
struct idpf_q_vector {
__cacheline_group_begin_aligned(read_mostly);
@@ -438,13 +437,12 @@ struct idpf_q_vector {
__cacheline_group_begin_aligned(cold);
u16 v_idx;
- cpumask_var_t affinity_mask;
__cacheline_group_end_aligned(cold);
};
libeth_cacheline_set_assert(struct idpf_q_vector, 120,
24 + sizeof(struct napi_struct) +
2 * sizeof(struct dim),
- 8 + sizeof(cpumask_var_t));
+ 8);
struct idpf_rx_queue_stats {
u64_stats_t packets;
@@ -940,7 +938,7 @@ static inline int idpf_q_vector_to_mem(const struct idpf_q_vector *q_vector)
if (!q_vector)
return NUMA_NO_NODE;
- cpu = cpumask_first(q_vector->affinity_mask);
+ cpu = cpumask_first(&q_vector->napi.config->affinity_mask);
return cpu < nr_cpu_ids ? cpu_to_mem(cpu) : NUMA_NO_NODE;
}
--
2.43.0
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