diff options
Diffstat (limited to 'tools/perf/util/machine.c')
| -rw-r--r-- | tools/perf/util/machine.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 55d4977b9913..d96cbfd97ad8 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -94,6 +94,8 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid) machine->comm_exec = false; machine->kernel_start = 0; machine->vmlinux_map = NULL; + /* There is no initial context switch in, so we start at 1. */ + machine->parallelism = 1; machine->root_dir = strdup(root_dir); if (machine->root_dir == NULL) @@ -677,8 +679,11 @@ int machine__process_aux_output_hw_id_event(struct machine *machine __maybe_unus int machine__process_switch_event(struct machine *machine __maybe_unused, union perf_event *event) { + bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT; + if (dump_trace) perf_event__fprintf_switch(event, stdout); + machine->parallelism += out ? -1 : 1; return 0; } @@ -1880,6 +1885,8 @@ int machine__process_exit_event(struct machine *machine, union perf_event *event if (dump_trace) perf_event__fprintf_task(event, stdout); + /* There is no context switch out before exit, so we decrement here. */ + machine->parallelism--; if (thread != NULL) { if (symbol_conf.keep_exited_threads) thread__set_exited(thread, /*exited=*/true); |