From: Jiri Olsa <jolsa@xxxxxxxxxx> commit 722ddfde366fd46205456a9c5ff9b3359dc9a75e upstream. The final sort might get confused when the comparison is done over bigger numbers than int like for -s time. Check the following report for longer workloads: $ perf report -s time -F time,overhead --stdio Fix hist_entry__sort() to properly return int64_t and not possible cut int. Fixes: 043ca389a318 ("perf tools: Use hpp formats to sort final output") Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx> Reviewed-by: Andi Kleen <ak@xxxxxxxxxxxxxxx> Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx> Cc: Michael Petlan <mpetlan@xxxxxxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx # v3.16+ Link: http://lore.kernel.org/lkml/20191104232711.16055-1-jolsa@xxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- tools/perf/util/hist.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -1508,7 +1508,7 @@ int hists__collapse_resort(struct hists return 0; } -static int hist_entry__sort(struct hist_entry *a, struct hist_entry *b) +static int64_t hist_entry__sort(struct hist_entry *a, struct hist_entry *b) { struct hists *hists = a->hists; struct perf_hpp_fmt *fmt;