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Subject[PATCH 76/85] perf time-utils: Prevent percentage time range overlap
Date
From: Adrian Hunter <adrian.hunter@intel.com>

Prevent percentage time range overlap. This is only a 1 nanosecond
change but makes the results more logical e.g. a sample cannot be in
both the first 10% and the second 20%.

Note, there is a later patch that adds a test for time-utils.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190604130017.31207-15-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/time-utils.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/time-utils.c b/tools/perf/util/time-utils.c
index 69441faab3d0..3e87c21c293c 100644
--- a/tools/perf/util/time-utils.c
+++ b/tools/perf/util/time-utils.c
@@ -148,6 +148,9 @@ static int set_percent_time(struct perf_time_interval *ptime, double start_pcnt,
ptime->start = start + round(start_pcnt * total);
ptime->end = start + round(end_pcnt * total);

+ if (ptime->end > ptime->start && ptime->end != end)
+ ptime->end -= 1;
+
return 0;
}

--
2.20.1
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