The perf top uses 'dso,symbol' sort keys by default so it overlooked a problem in task's comm resolving. When the sort key contains 'comm', some task's comm is not shown properly. This is because the perf_top__mmap_read_idx() checks the cpumode value improperly.
The cpumode value of non-sample events are 0 (PERF_RECORD_MISC_CPUMODE_ UNKNOWN) so the events will be ignored by the switch statement. This patch allows it for non-sample events. Signed-off-by: Namhyung Kim <namhy...@kernel.org> --- tools/perf/builtin-top.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 38d4d6cac823..ae4c6420300b 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -857,9 +857,12 @@ static void perf_top__mmap_read_idx(struct perf_top *top, int idx) * TODO: we don't process guest user from host side * except simple counting. */ - /* Fall thru */ - default: goto next_event; + default: + if (event->header.type == PERF_RECORD_SAMPLE) + goto next_event; + machine = &session->machines.host; + break; } -- 2.5.0 -- 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/