As the default guest is designed to handle orphan kernel symboles with --guestkallsysms and --guestmoudles, it has no user space. So we should skip synthesizing threads if machine is default guest.
Signed-off-by: Dongsheng Yang <yangds.f...@cn.fujitsu.com> --- tools/perf/util/event.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 93c6701..598b73e 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -133,6 +133,9 @@ static pid_t perf_event__synthesize_comm(struct perf_tool *tool, goto out; } + if (machine__is_default_guest(machine)) + return 0; + snprintf(filename, sizeof(filename), "%s/proc/%d/task", machine->root_dir, pid); @@ -183,6 +186,9 @@ static int perf_event__synthesize_mmap_events(struct perf_tool *tool, FILE *fp; int rc = 0; + if (machine__is_default_guest(machine)) + return 0; + snprintf(filename, sizeof(filename), "%s/proc/%d/maps", machine->root_dir, pid); @@ -409,6 +415,9 @@ int perf_event__synthesize_threads(struct perf_tool *tool, if (mmap_event == NULL) goto out_free_comm; + if (machine__is_default_guest(machine)) + return 0; + snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir); proc = opendir(proc_path); -- 1.8.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/