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Commit c239c25a authored by Dongsheng Yang's avatar Dongsheng Yang Committed by Arnaldo Carvalho de Melo
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perf tools: Do not synthesize the treads of default guest. 



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: default avatarDongsheng Yang <yangds.fnst@cn.fujitsu.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Link: http://lkml.kernel.org/r/e9ddb5dac6f963169657218b12ceb3c2030f54e8.1387572416.git.yangds.fnst@cn.fujitsu.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent f5db57c4

tools/perf/util/event.c

+9 −0
Original line number Original line Diff line number Diff line
@@ -133,6 +133,9 @@ static pid_t perf_event__synthesize_comm(struct perf_tool *tool, 
		goto out;

		goto out;

	}

	}





	if (machine__is_default_guest(machine))

		return 0;



	snprintf(filename, sizeof(filename), "%s/proc/%d/task",

	snprintf(filename, sizeof(filename), "%s/proc/%d/task",

		 machine->root_dir, pid);

		 machine->root_dir, pid);
@@ -183,6 +186,9 @@ static int perf_event__synthesize_mmap_events(struct perf_tool *tool, 
	FILE *fp;

	FILE *fp;

	int rc = 0;

	int rc = 0;





	if (machine__is_default_guest(machine))

		return 0;



	snprintf(filename, sizeof(filename), "%s/proc/%d/maps",

	snprintf(filename, sizeof(filename), "%s/proc/%d/maps",

		 machine->root_dir, pid);

		 machine->root_dir, pid);
@@ -409,6 +415,9 @@ int perf_event__synthesize_threads(struct perf_tool *tool, 
	if (mmap_event == NULL)

	if (mmap_event == NULL)

		goto out_free_comm;

		goto out_free_comm;





	if (machine__is_default_guest(machine))

		return 0;



	snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);

	snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);

	proc = opendir(proc_path);

	proc = opendir(proc_path);