linux-kernel - [PATCH 8/8] perf tools: Enlarge pid sort entry size

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Date:	Mon, 20 Jun 2016 23:58:19 +0200
From:	Jiri Olsa <jolsa@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH 8/8] perf tools: Enlarge pid sort entry size

The pid sort entry currently aligns pids with 5 digits,
which is not enough for current 4 million pids limit.

This leads to unaligned ':' header-data output when
we display 7 digits pid:

  # Children      Self  Symbol                    Pid:Command
  # ........  ........  ......................  .....................
  #
       0.12%     0.12%  [.] 0x0000000000147e0f  2052894:krava
  ...

Adding 2 more digit to properly align the pid limit:

  # Children      Self  Symbol                      Pid:Command
  # ........  ........  ......................  .......................
  #
       0.12%     0.12%  [.] 0x0000000000147e0f  2052894:krava

Link: http://lkml.kernel.org/n/tip-85bawguk56i4te6a4u8i6s37@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/util/hist.c | 2 +-
 tools/perf/util/sort.c | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index d2647b1d82c0..d9826cce6801 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -79,7 +79,7 @@ void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
 
 	len = thread__comm_len(h->thread);
 	if (hists__new_col_len(hists, HISTC_COMM, len))
-		hists__set_col_len(hists, HISTC_THREAD, len + 6);
+		hists__set_col_len(hists, HISTC_THREAD, len + 8);
 
 	if (h->ms.map) {
 		len = dso__name_len(h->ms.map->dso);
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 896d34ebcc1e..a764139af485 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -79,8 +79,8 @@ static int hist_entry__thread_snprintf(struct hist_entry *he, char *bf,
 {
 	const char *comm = thread__comm_str(he->thread);
 
-	width = max(7U, width) - 6;
-	return repsep_snprintf(bf, size, "%5d:%-*.*s", he->thread->tid,
+	width = max(7U, width) - 8;
+	return repsep_snprintf(bf, size, "%7d:%-*.*s", he->thread->tid,
 			       width, width, comm ?: "");
 }
 
@@ -95,7 +95,7 @@ static int hist_entry__thread_filter(struct hist_entry *he, int type, const void
 }
 
 struct sort_entry sort_thread = {
-	.se_header	= "  Pid:Command",
+	.se_header	= "    Pid:Command",
 	.se_cmp		= sort__thread_cmp,
 	.se_snprintf	= hist_entry__thread_snprintf,
 	.se_filter	= hist_entry__thread_filter,
-- 
2.4.11