By using -flto and -fwhole-program, all functions from the ring implementation
can be treated as static and possibly inlined. Force this to happen through
the GCC flatten attribute.
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
tools/virtio/ringtest/Makefile | 4 ++--
tools/virtio/ringtest/main.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/virtio/ringtest/Makefile b/tools/virtio/ringtest/Makefile
index 877a8a4721b6..c012edbdb13b 100644
--- a/tools/virtio/ringtest/Makefile
+++ b/tools/virtio/ringtest/Makefile
@@ -3,8 +3,8 @@ all:
all: ring virtio_ring_0_9 virtio_ring_poll virtio_ring_inorder ptr_ring noring
CFLAGS += -Wall
-CFLAGS += -pthread -O2 -ggdb
-LDFLAGS += -pthread -O2 -ggdb
+CFLAGS += -pthread -O2 -ggdb -flto -fwhole-program
+LDFLAGS += -pthread -O2 -ggdb -flto -fwhole-program
main.o: main.c main.h
ring.o: ring.c main.h
diff --git a/tools/virtio/ringtest/main.c b/tools/virtio/ringtest/main.c
index 147abb452a6c..bda7f0dad981 100644
--- a/tools/virtio/ringtest/main.c
+++ b/tools/virtio/ringtest/main.c
@@ -96,7 +96,7 @@ void set_affinity(const char *arg)
assert(!ret);
}
-static void run_guest(void)
+static void __attribute__((__flatten__)) run_guest(void)
{
int completed_before;
int completed = 0;
@@ -149,7 +149,7 @@ static void run_guest(void)
}
}
-static void run_host(void)
+static void __attribute__((__flatten__)) run_host(void)
{
int completed_before;
int completed = 0;
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
