perf_env__set_cmdline
err = perf_env__set_cmdline(&host_env, argc, argv);
status = perf_env__set_cmdline(&host_env, argc, argv);
err = perf_env__set_cmdline(&trace->host_env, argc, argv);
int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[]);