sfc: Provide hints to irqbalance daemon
Allocate IRQs with the name format <device>[-<type>]-<number> so that
future versions of irqbalanced understand what we're doing.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 2faaa96..bba11490 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -356,6 +356,27 @@
}
+static void efx_set_channel_names(struct efx_nic *efx)
+{
+ struct efx_channel *channel;
+ const char *type = "";
+ int number;
+
+ efx_for_each_channel(channel, efx) {
+ number = channel->channel;
+ if (efx->n_channels > efx->n_rx_queues) {
+ if (channel->channel < efx->n_rx_queues) {
+ type = "-rx";
+ } else {
+ type = "-tx";
+ number -= efx->n_rx_queues;
+ }
+ }
+ snprintf(channel->name, sizeof(channel->name),
+ "%s%s-%d", efx->name, type, number);
+ }
+}
+
/* Channels are shutdown and reinitialised whilst the NIC is running
* to propagate configuration changes (mtu, checksum offload), or
* to clear hardware error conditions
@@ -1002,6 +1023,7 @@
goto fail3;
}
}
+ efx_set_channel_names(efx);
return 0;
@@ -1483,6 +1505,7 @@
strcpy(efx->name, net_dev->name);
efx_mtd_rename(efx);
+ efx_set_channel_names(efx);
}
return NOTIFY_DONE;
@@ -1516,6 +1539,7 @@
return rc;
}
strcpy(efx->name, net_dev->name);
+ efx_set_channel_names(efx);
return 0;
}
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index 2ef876d..e32be4c 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -1574,7 +1574,7 @@
efx_for_each_channel(channel, efx) {
rc = request_irq(channel->irq, falcon_msi_interrupt,
IRQF_PROBE_SHARED, /* Not shared */
- efx->name, channel);
+ channel->name, channel);
if (rc) {
EFX_ERR(efx, "failed to hook IRQ %d\n", channel->irq);
goto fail2;
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 2c5b5fa..abff908 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -327,6 +327,7 @@
*
* @efx: Associated Efx NIC
* @channel: Channel instance number
+ * @name: Name for channel and IRQ
* @used_flags: Channel is used by net driver
* @enabled: Channel enabled indicator
* @irq: IRQ number (MSI and MSI-X only)
@@ -357,6 +358,7 @@
struct efx_channel {
struct efx_nic *efx;
int channel;
+ char name[IFNAMSIZ + 6];
int used_flags;
bool enabled;
int irq;