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Diffstat (limited to 'tools/virtio/ringtest/ring.c')
-rw-r--r--tools/virtio/ringtest/ring.c24
1 files changed, 15 insertions, 9 deletions
diff --git a/tools/virtio/ringtest/ring.c b/tools/virtio/ringtest/ring.c
index 747c5dd47be8..2b9859beea65 100644
--- a/tools/virtio/ringtest/ring.c
+++ b/tools/virtio/ringtest/ring.c
@@ -188,16 +188,18 @@ bool enable_call()
void kick_available(void)
{
+ bool need;
+
/* Flush in previous flags write */
/* Barrier C (for pairing) */
smp_mb();
- if (!need_event(event->kick_index,
- guest.avail_idx,
- guest.kicked_avail_idx))
- return;
+ need = need_event(event->kick_index,
+ guest.avail_idx,
+ guest.kicked_avail_idx);
guest.kicked_avail_idx = guest.avail_idx;
- kick();
+ if (need)
+ kick();
}
/* host side */
@@ -253,14 +255,18 @@ bool use_buf(unsigned *lenp, void **bufp)
void call_used(void)
{
+ bool need;
+
/* Flush in previous flags write */
/* Barrier D (for pairing) */
smp_mb();
- if (!need_event(event->call_index,
+
+ need = need_event(event->call_index,
host.used_idx,
- host.called_used_idx))
- return;
+ host.called_used_idx);
host.called_used_idx = host.used_idx;
- call();
+
+ if (need)
+ call();
}