perf tools: Fix time sorting

BugLink: https://bugs.launchpad.net/bugs/1852338
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@kernel.org>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org # v3.16+
Link: http://lore.kernel.org/lkml/20191104232711.16055-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Connor Kuehl <connor.kuehl@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 6bd270a1e93e08d94cbb301bb75ed49541da70f2..7ec174361c54e9bd624f705e955af4b56fa8d59d 100644 (file)
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1618,7 +1618,7 @@ int hists__collapse_resort(struct hists *hists, struct ui_progress *prog)
        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;