diff options
| author |   Dongsheng Yang <yangds.fnst@cn.fujitsu.com> | 2013-12-20 15:53:00 -0500 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-12-23 16:49:51 -0300 |
| commit | c239c25a82808ad2cbc795b69e621c4c24f154d6 (patch) | |
| tree | 11ed53250b4467fd2aa8d72317144e76437ff439 | |
| parent | perf tools: Use machine->pid for tgid if machine is guest. (diff) | |
| download | linux-dev-c239c25a82808ad2cbc795b69e621c4c24f154d6.tar.xz linux-dev-c239c25a82808ad2cbc795b69e621c4c24f154d6.zip | |
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: Dongsheng 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: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/event.c | 9 |
1 files changed, 9 insertions, 0 deletions
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); |