linux-kernel - [tip:perf/core] perf ui/stdio: Always reset output width for hierarchy

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Date:   Tue, 20 Sep 2016 14:40:44 -0700
From:   tip-bot for Namhyung Kim <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     andi@...stfloor.org, mingo@...nel.org, acme@...hat.com,
        namhyung@...nel.org, a.p.zijlstra@...llo.nl, hpa@...or.com,
        linux-kernel@...r.kernel.org, jolsa@...nel.org, tglx@...utronix.de
Subject: [tip:perf/core] perf ui/stdio: Always reset output width for
 hierarchy

Commit-ID:  9a6ad25b5a2026ba1399abc879ec623957867e79
Gitweb:     http://git.kernel.org/tip/9a6ad25b5a2026ba1399abc879ec623957867e79
Author:     Namhyung Kim <namhyung@...nel.org>
AuthorDate: Tue, 13 Sep 2016 16:45:49 +0900
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 13 Sep 2016 16:41:21 -0300

perf ui/stdio: Always reset output width for hierarchy

When the --hierarchy option is used, each entry has its own hpp_list to
show the result.  But it is not updating the width of each column for
perf-top.  The perf-report command has no problem since it resets it
during header display.

  $ sudo perf top --hierarchy --stdio

   PerfTop:     160 irqs/sec  kernel:38.8%  exact: 100.0%
                                     [4000Hz cycles:pp],  (all, 12 CPUs)
  ----------------------------------------------------------------------

   52.32%     perf
      24.74%     [.] __symbols__insert
      5.62%     [.] rb_next
      5.14%     [.] dso__load_sym

Move the code into hists__fprintf() so that it can be called always.
Also it'd be better to put similar code together.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Andi Kleen <andi@...stfloor.org>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Fixes: 1b2dbbf41a0f ("perf hists: Use own hpp_list for hierarchy mode")
Link: http://lkml.kernel.org/r/20160913074552.13284-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/ui/stdio/hist.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 9b65f4a..18b4fd9 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -628,14 +628,6 @@ hists__fprintf_hierarchy_headers(struct hists *hists,
 				 struct perf_hpp *hpp,
 				 FILE *fp)
 {
-	struct perf_hpp_list_node *fmt_node;
-	struct perf_hpp_fmt *fmt;
-
-	list_for_each_entry(fmt_node, &hists->hpp_formats, list) {
-		perf_hpp_list__for_each_format(&fmt_node->hpp, fmt)
-			perf_hpp__reset_width(fmt, hists);
-	}
-
 	return print_hierarchy_header(hists, hpp, symbol_conf.field_sep, fp);
 }
 
@@ -733,6 +725,7 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
 		      bool use_callchain)
 {
 	struct perf_hpp_fmt *fmt;
+	struct perf_hpp_list_node *node;
 	struct rb_node *nd;
 	size_t ret = 0;
 	const char *sep = symbol_conf.field_sep;
@@ -745,6 +738,11 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
 
 	hists__for_each_format(hists, fmt)
 		perf_hpp__reset_width(fmt, hists);
+	/* hierarchy entries have their own hpp list */
+	list_for_each_entry(node, &hists->hpp_formats, list) {
+		perf_hpp_list__for_each_format(&node->hpp, fmt)
+			perf_hpp__reset_width(fmt, hists);
+	}
 
 	if (symbol_conf.col_width_list_str)
 		perf_hpp__set_user_width(symbol_conf.col_width_list_str);