summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/net/ethernet/tile/tilegx.c65
1 files changed, 33 insertions, 32 deletions
diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c
index e9eba2b..17bcf33 100644
--- a/drivers/net/ethernet/tile/tilegx.c
+++ b/drivers/net/ethernet/tile/tilegx.c
@@ -650,37 +650,13 @@ static enum hrtimer_restart tile_net_handle_egress_timer(struct hrtimer *t)
return HRTIMER_NORESTART;
}
-/* Helper function for "tile_net_update()".
- * "dev" (i.e. arg) is the device being brought up or down,
- * or NULL if all devices are now down.
- */
-static void tile_net_update_cpu(void *arg)
+/* Helper function for "tile_net_update()". */
+static void manage_ingress_irq(void *enable)
{
- struct tile_net_info *info = &__get_cpu_var(per_cpu_info);
- struct net_device *dev = arg;
-
- if (!info->has_iqueue)
- return;
-
- if (dev != NULL) {
- if (!info->napi_added) {
- netif_napi_add(dev, &info->napi,
- tile_net_poll, TILE_NET_WEIGHT);
- info->napi_added = true;
- }
- if (!info->napi_enabled) {
- napi_enable(&info->napi);
- info->napi_enabled = true;
- }
+ if (enable)
enable_percpu_irq(ingress_irq, 0);
- } else {
+ else
disable_percpu_irq(ingress_irq);
- if (info->napi_enabled) {
- napi_disable(&info->napi);
- info->napi_enabled = false;
- }
- /* FIXME: Drain the iqueue. */
- }
}
/* Helper function for tile_net_open() and tile_net_stop().
@@ -717,10 +693,35 @@ static int tile_net_update(struct net_device *dev)
return -EIO;
}
- /* Update all cpus, sequentially (to protect "netif_napi_add()"). */
- for_each_online_cpu(cpu)
- smp_call_function_single(cpu, tile_net_update_cpu,
- (saw_channel ? dev : NULL), 1);
+ /* Update all cpus, sequentially (to protect "netif_napi_add()").
+ * We use on_each_cpu to handle the IPI mask or unmask.
+ */
+ if (!saw_channel)
+ on_each_cpu(manage_ingress_irq, (void *)0, 1);
+ for_each_online_cpu(cpu) {
+ struct tile_net_info *info = &per_cpu(per_cpu_info, cpu);
+ if (!info->has_iqueue)
+ continue;
+ if (saw_channel) {
+ if (!info->napi_added) {
+ netif_napi_add(dev, &info->napi,
+ tile_net_poll, TILE_NET_WEIGHT);
+ info->napi_added = true;
+ }
+ if (!info->napi_enabled) {
+ napi_enable(&info->napi);
+ info->napi_enabled = true;
+ }
+ } else {
+ if (info->napi_enabled) {
+ napi_disable(&info->napi);
+ info->napi_enabled = false;
+ }
+ /* FIXME: Drain the iqueue. */
+ }
+ }
+ if (saw_channel)
+ on_each_cpu(manage_ingress_irq, (void *)1, 1);
/* HACK: Allow packets to flow in the simulator. */
if (saw_channel)
OpenPOWER on IntegriCloud