Messages in this thread Patch in this message | | | From | David Ahern <> | Subject | [PATCH 8/9] perf kvm: debug for missing vmexit/vmentry event | Date | Fri, 2 Aug 2013 14:05:46 -0600 |
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Expected to have missing events for each vcpu when perf is started. After that should not have missing events.
Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Ingo Molnar <mingo@kernel.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Cc: Runzhen Wang <runzhen@linux.vnet.ibm.com> --- tools/perf/builtin-kvm.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 28afc05d..41dd25a 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -568,11 +568,22 @@ static bool handle_kvm_event(struct perf_kvm_stat *kvm, (kvm->trace_vcpu != vcpu_record->vcpu_id)) return true; - if (kvm->events_ops->is_begin_event(evsel, sample, &key)) + if (kvm->events_ops->is_begin_event(evsel, sample, &key)) { + if (vcpu_record->start_time) { + pr_debug("consecutive begin events (%s) for pid %d, vcpu %d\n", + evsel->name, sample->pid, vcpu_record->vcpu_id); + } return handle_begin_event(kvm, vcpu_record, &key, sample->time); + } + - if (kvm->events_ops->is_end_event(evsel, sample, &key)) + if (kvm->events_ops->is_end_event(evsel, sample, &key)) { + if (vcpu_record->start_time == 0) { + pr_debug("consecutive end events (%s) for pid %d, vcpu %d\n", + evsel->name, sample->pid, vcpu_record->vcpu_id); + } return handle_end_event(kvm, vcpu_record, &key, sample); + } return true; } -- 1.7.10.1
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