qemu: generate signals on tap I/O

Currently tap does not generate signals on I/O; this causes
network latency to be dependent on the timer tick (1ms without
dyntick, guest dependent with dyntick).  By generating a signal
on I/O, we can inform the guest immediately that a packet has
arrived.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5688 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 1 insertions, 1 deletions

diff --git a/vl.c b/vl.c
index 7bcffd334a..24c9c32c12 100644
--- a/vl.c
+++ b/vl.c
@@ -1403,7 +1403,7 @@ static int fcntl_setfl(int fd, int flag)
 
 #define RTC_FREQ 1024
 
-static void enable_sigio_timer(int fd)
+void enable_sigio_timer(int fd)
 {
     struct sigaction act;