[PATCH 1/3] perf, tools, report: Handle samples without time

[Andi Kleen]

From: Andi Kleen <a...@linux.intel.com>

When a sample doesn't have a time stamp (e.g. from --no-time),
show the beginning of the trace for res samples instead of generating
an impossible time range that errors out.

Signed-off-by: Andi Kleen <a...@linux.intel.com>
---
 tools/perf/ui/browsers/res_sample.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/ui/browsers/res_sample.c 
b/tools/perf/ui/browsers/res_sample.c
index c0dd73176d42..c450a3536f10 100644
--- a/tools/perf/ui/browsers/res_sample.c
+++ b/tools/perf/ui/browsers/res_sample.c
@@ -60,7 +60,9 @@ int res_sample_browse(struct res_sample *res_samples, int 
num_res,
                return -1;
        r = &res_samples[choice];
 
-       n = timestamp__scnprintf_nsec(r->time - context_len, trange, sizeof 
trange);
+       n = timestamp__scnprintf_nsec(r->time > context_len ?
+                                     r->time - context_len : r->time,
+                                     trange, sizeof trange);
        trange[n++] = ',';
        timestamp__scnprintf_nsec(r->time + context_len, trange + n, sizeof 
trange - n);
 
-- 
2.20.1