machines__find
struct machine *machine = machines__find(machines, HOST_KERNEL_ID);
machine = machines__find(machines, machine_pid);
struct machine *machine = machines__find(machines, sample->machine_pid);
struct machine *machine = machines__find(machines, pid);
struct machine *machine = machines__find(machines, pid);
struct machine *host_machine = machines__find(machines, HOST_KERNEL_ID);
host_machine = machines__find(machines, HOST_KERNEL_ID);
struct machine *machines__find(struct machines *machines, pid_t pid);
return machines__find(&session->machines, pid);