all: speed up tests

Mark tests as parallel where makes sense.
Speed up sys.TransitivelyEnabledCalls.

Execution time is now:

ok  	github.com/google/syzkaller/config		0.172s
ok  	github.com/google/syzkaller/cover		0.060s
ok  	github.com/google/syzkaller/csource		3.081s
ok  	github.com/google/syzkaller/db			0.395s
ok  	github.com/google/syzkaller/executor		0.060s
ok  	github.com/google/syzkaller/fileutil		0.106s
ok  	github.com/google/syzkaller/host		1.530s
ok  	github.com/google/syzkaller/ifuzz		0.491s
ok  	github.com/google/syzkaller/ipc			1.374s
ok  	github.com/google/syzkaller/log			0.014s
ok  	github.com/google/syzkaller/prog		2.604s
ok  	github.com/google/syzkaller/report		0.045s
ok  	github.com/google/syzkaller/symbolizer		0.062s
ok  	github.com/google/syzkaller/sys			0.365s
ok  	github.com/google/syzkaller/syz-dash		0.014s
ok  	github.com/google/syzkaller/syz-hub/state	0.427s
ok  	github.com/google/syzkaller/vm			0.052s

However, main time is still taken by rebuilding sys package.

Fixes #182

1 files changed, 4 insertions, 2 deletions

diff --git a/ipc/ipc_test.go b/ipc/ipc_test.go
index f1aef472a..726da8485 100644
--- a/ipc/ipc_test.go
+++ b/ipc/ipc_test.go
@@ -38,6 +38,7 @@ func buildProgram(t *testing.T, src string) string {
 }
 
 func initTest(t *testing.T) (rand.Source, int) {
+	t.Parallel()
 	iters := 100
 	if testing.Short() {
 		iters = 10
@@ -76,11 +77,12 @@ func TestEmptyProg(t *testing.T) {
 }
 
 func TestExecute(t *testing.T) {
+	rs, iters := initTest(t)
+	flags := []uint64{0, FlagThreaded, FlagThreaded | FlagCollide}
+
 	bin := buildExecutor(t)
 	defer os.Remove(bin)
 
-	rs, iters := initTest(t)
-	flags := []uint64{0, FlagThreaded, FlagThreaded | FlagCollide}
 	for _, flag := range flags {
 		t.Logf("testing flags 0x%x\n", flag)
 		cfg := Config{