[tip:perf/core] perf tools: Fix column width setting on 'trace' sort key

[tip-bot for Namhyung Kim]

Commit-ID:  0c0af78d472f96efe04daaaccede7522b2394b76
Gitweb:     http://git.kernel.org/tip/0c0af78d472f96efe04daaaccede7522b2394b76
Author:     Namhyung Kim <namhyung@xxxxxxxxxx>
AuthorDate: Sun, 21 Feb 2016 23:22:38 +0900
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 22 Feb 2016 12:06:53 -0300

perf tools: Fix column width setting on 'trace' sort key

It missed to update column length of the 'trace' sort key in the
hists__calc_col_len() so it might truncate the output.  It calculated
the column length in the ->cmp() callback originally but it doesn't
guarantee it's called always.

Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1456064558-13086-5-git-send-email-namhyung@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/hist.c | 3 +++
 tools/perf/util/sort.c | 3 ---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 827c6cb..017eb5c 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -179,6 +179,9 @@ void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
 	if (h->transaction)
 		hists__new_col_len(hists, HISTC_TRANSACTION,
 				   hist_entry__transaction_len());
+
+	if (h->trace_output)
+		hists__new_col_len(hists, HISTC_TRACE, strlen(h->trace_output));
 }
 
 void hists__output_recalc_col_len(struct hists *hists, int max_rows)
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index a7d73e5..6d0f858 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -483,9 +483,6 @@ sort__trace_cmp(struct hist_entry *left, struct hist_entry *right)
 	if (right->trace_output == NULL)
 		right->trace_output = get_trace_output(right);
 
-	hists__new_col_len(left->hists, HISTC_TRACE, strlen(left->trace_output));
-	hists__new_col_len(right->hists, HISTC_TRACE, strlen(right->trace_output));
-
 	return strcmp(right->trace_output, left->trace_output);
 }