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

If the user specified --ns, the column to print the sort time stamp
wasn't wide enough to actually print the full nanoseconds.

Widen the time key column width when --ns is specified.

Before:

  % perf record -a sleep 1
  % perf report --sort time,overhead,symbol --stdio --ns
  ...
       2.39%  187851.10000  [k] smp_call_function_single   -      -
       1.53%  187851.10000  [k] intel_idle                 -      -
       0.59%  187851.10000  [.] __wcscmp_ifunc             -      -
       0.33%  187851.10000  [.] 0000000000000000           -      -
       0.28%  187851.10000  [k] cpuidle_enter_state        -      -

After:

  % perf report --sort time,overhead,symbol --stdio --ns
  ...
       2.39%  187851.100000000  [k] smp_call_function_single   -      -
       1.53%  187851.100000000  [k] intel_idle                 -      -
       0.59%  187851.100000000  [.] __wcscmp_ifunc             -      -
       0.33%  187851.100000000  [.] 0000000000000000           -      -
       0.28%  187851.100000000  [k] cpuidle_enter_state        -      -

Signed-off-by: Andi Kleen <a...@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <a...@redhat.com>
Cc: Jiri Olsa <jo...@kernel.org>
Link: http://lkml.kernel.org/r/20190823210338.12360-2-a...@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
 tools/perf/util/hist.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 8efbf58dc3d0..33702675073c 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -193,7 +193,10 @@ void hists__calc_col_len(struct hists *hists, struct 
hist_entry *h)
        hists__new_col_len(hists, HISTC_MEM_LVL, 21 + 3);
        hists__new_col_len(hists, HISTC_LOCAL_WEIGHT, 12);
        hists__new_col_len(hists, HISTC_GLOBAL_WEIGHT, 12);
-       hists__new_col_len(hists, HISTC_TIME, 12);
+       if (symbol_conf.nanosecs)
+               hists__new_col_len(hists, HISTC_TIME, 16);
+       else
+               hists__new_col_len(hists, HISTC_TIME, 12);
 
        if (h->srcline) {
                len = MAX(strlen(h->srcline), strlen(sort_srcline.se_header));
-- 
2.21.0

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