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 <[email protected]> --- 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
