fuzzer: parallel execution mode

Config now have procs parameter that controls number
of parallel executor's running in each VM.

2 files changed, 3 insertions, 2 deletions

diff --git a/vm/qemu/qemu.go b/vm/qemu/qemu.go
index be62c343e..49d19d4c9 100644
--- a/vm/qemu/qemu.go
+++ b/vm/qemu/qemu.go
@@ -272,8 +272,8 @@ func (inst *Instance) Run() {
 	inst.CreateSSHCommand("echo -n 0 > /proc/sys/debug/exception-trace").Wait(10 * time.Second)
 
 	// Run the binary.
-	cmd := inst.CreateSSHCommand(fmt.Sprintf("/syzkaller_fuzzer -name %v -executor /syzkaller_executor -manager %v:%v %v",
-		inst.name, hostAddr, inst.cfg.ManagerPort, inst.callsFlag))
+	cmd := inst.CreateSSHCommand(fmt.Sprintf("/syzkaller_fuzzer -name %v -executor /syzkaller_executor -manager %v:%v -procs %v %v",
+		inst.name, hostAddr, inst.cfg.ManagerPort, inst.cfg.Procs, inst.callsFlag))
 
 	deadline := start.Add(time.Hour)
 	lastOutput := time.Now()
diff --git a/vm/vm.go b/vm/vm.go
index e6430ec47..bd18bccb1 100644
--- a/vm/vm.go
+++ b/vm/vm.go
@@ -19,6 +19,7 @@ type Config struct {
 	EnabledSyscalls string
 	Suppressions    []*regexp.Regexp
 	NoCover         bool
+	Procs           int
 }
 
 type ctorFunc func(cfg *Config, index int) (Instance, error)