diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2012-02-10 17:05:04 (GMT) |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-02-14 00:55:58 (GMT) |
| commit | 0c095715b388d19d7a0b7e8eaceeceb018f5b3d1 (patch) | |
| tree | 5938972af1770fdd2c26866bebaf44e4e082948c /tools/perf/builtin-top.c | |
| parent | b52956c961be3a04182ae7b776623531601e0fb7 (diff) | |
| download | linux-0c095715b388d19d7a0b7e8eaceeceb018f5b3d1.tar.xz | |
perf top: Don't process samples with no valid machine object
The perf sample processing code relies on a valid machine object. Make
sure that this path is only entered when such a object exists.
A counter for samples where no machine object exits is also introduced
to give the user a message about these samples.
Reported-by: David Ahern <dsahern@gmail.com>
Reported-by: Jason Wang <jasowang@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1328893505-4115-2-git-send-email-joerg.roedel@amd.com
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-top.c')
| -rw-r--r-- | tools/perf/builtin-top.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 94d55cb..5a88c0d 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -677,6 +677,12 @@ static void perf_event__process_sample(struct perf_tool *tool, return; } + if (!machine) { + pr_err("%u unprocessable samples recorded.", + top->session->hists.stats.nr_unprocessable_samples++); + return; + } + if (event->header.misc & PERF_RECORD_MISC_EXACT_IP) top->exact_samples++; |