diff options
Diffstat (limited to 'tools/perf/builtin-top.c')
| -rw-r--r-- | tools/perf/builtin-top.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index bc31b93cc1d8..477a8699f0b5 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -958,14 +958,16 @@ static int __cmd_top(struct perf_top *top) if (perf_session__register_idle_thread(top->session) < 0) goto out_delete; - perf_set_multithreaded(); + if (top->nr_threads_synthesize > 1) + perf_set_multithreaded(); machine__synthesize_threads(&top->session->machines.host, &opts->target, top->evlist->threads, false, opts->proc_map_timeout, - (unsigned int)sysconf(_SC_NPROCESSORS_ONLN)); + top->nr_threads_synthesize); - perf_set_singlethreaded(); + if (top->nr_threads_synthesize > 1) + perf_set_singlethreaded(); if (perf_hpp_list.socket) { ret = perf_env__read_cpu_topology_map(&perf_env); @@ -1118,6 +1120,7 @@ int cmd_top(int argc, const char **argv) }, .max_stack = sysctl_perf_event_max_stack, .sym_pcnt_filter = 5, + .nr_threads_synthesize = UINT_MAX, }; struct record_opts *opts = &top.record_opts; struct target *target = &opts->target; @@ -1227,6 +1230,8 @@ int cmd_top(int argc, const char **argv) OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy, "Show entries in a hierarchy"), OPT_BOOLEAN(0, "force", &symbol_conf.force, "don't complain, do it"), + OPT_UINTEGER(0, "num-thread-synthesize", &top.nr_threads_synthesize, + "number of thread to run event synthesize"), OPT_END() }; const char * const top_usage[] = { |