[XEN PATCH v2 2/5] xen: export get_free_port

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>

get_free_port will soon be used to allocate the xenstore event channel
for dom0less domains.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
CC: Julien Grall <julien@xxxxxxx>
CC: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
CC: Bertrand Marquis <bertrand.marquis@xxxxxxx>
CC: Jan Beulich <jbeulich@xxxxxxxx>
CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/common/event_channel.c | 2 +-
 xen/include/xen/event.h    | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/xen/common/event_channel.c b/xen/common/event_channel.c
index da88ad141a..5b0bcaaad4 100644
--- a/xen/common/event_channel.c
+++ b/xen/common/event_channel.c
@@ -232,7 +232,7 @@ int evtchn_allocate_port(struct domain *d, evtchn_port_t 
port)
     return 0;
 }
 
-static int get_free_port(struct domain *d)
+int get_free_port(struct domain *d)
 {
     int            port;
 
diff --git a/xen/include/xen/event.h b/xen/include/xen/event.h
index 21c95e14fd..0b35d9d4d2 100644
--- a/xen/include/xen/event.h
+++ b/xen/include/xen/event.h
@@ -71,6 +71,9 @@ void evtchn_free(struct domain *d, struct evtchn *chn);
 /* Allocate a specific event channel port. */
 int evtchn_allocate_port(struct domain *d, unsigned int port);
 
+/* Get fix free event channel port */
+int get_free_port(struct domain *d);
+
 /* Unmask a local event-channel port. */
 int evtchn_unmask(unsigned int port);
 
-- 
2.25.1