From: Dongsheng Yang <yangds.f...@cn.fujitsu.com> As the default guest is designed to handle orphan kernel symboles with --guestkallsysms and --guestmodules, 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> Cc: David Ahern <dsah...@gmail.com> Cc: Ingo Molnar <mi...@kernel.org> Cc: Jiri Olsa <jo...@redhat.com> Cc: Namhyung Kim <namhyung....@lge.com> Link: http://lkml.kernel.org/r/e9ddb5dac6f963169657218b12ceb3c2030f54e8.1387572416.git.yangds.f...@cn.fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.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 2905771a1f49..45a76c69a9ed 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); -- 1.8.1.4 -- 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/
