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vdpa/snet: use likely/unlikely macros in hot functions

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- kick callback: most likely that the VQ is ready.
- interrupt handlers: most likely that the callback is not NULL.

Signed-off-by: Alvaro Karsz <alvaro.karsz@solid-run.com>
Message-Id: <20230409120242.3460074-1-alvaro.karsz@solid-run.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Alvaro Karsz 2023-04-09 15:02:42 +03:00 committed by Michael S. Tsirkin
parent 51b6e6c1c8
commit 5b250fac7c
1 changed files with 3 additions and 3 deletions
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6
drivers/vdpa/solidrun/snet_main.c
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@ -39,7 +39,7 @@ static irqreturn_t snet_cfg_irq_hndlr(int irq, void *data)
{
struct snet *snet = data;
/* Call callback if any */
if (snet->cb.callback)
if (likely(snet->cb.callback))
return snet->cb.callback(snet->cb.private);
return IRQ_HANDLED;
@ -49,7 +49,7 @@ static irqreturn_t snet_vq_irq_hndlr(int irq, void *data)
{
struct snet_vq *vq = data;
/* Call callback if any */
if (vq->cb.callback)
if (likely(vq->cb.callback))
return vq->cb.callback(vq->cb.private);
return IRQ_HANDLED;
@ -106,7 +106,7 @@ static void snet_kick_vq(struct vdpa_device *vdev, u16 idx)
{
struct snet *snet = vdpa_to_snet(vdev);
/* not ready - ignore */
if (!snet->vqs[idx]->ready)
if (unlikely(!snet->vqs[idx]->ready))
return;
iowrite32(SNET_KICK_VAL, snet->vqs[idx]->kick_ptr);