linux-kernel - [PATCH 09/19] perf evsel: Allow passing a left alignment when printing a symbol

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Date:	Mon, 11 Apr 2016 22:53:40 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	David Ahern <dsahern@...il.com>, Jiri Olsa <jolsa@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Wang Nan <wangnan0@...wei.com>
Subject: [PATCH 09/19] perf evsel: Allow passing a left alignment when printing a symbol

From: Arnaldo Carvalho de Melo <acme@...hat.com>

For callchains, etc where we want it to align just below the syscall
name, for instance, in 'perf trace'

Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/n/tip-uk9ekchd67651c625ltaur5y@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-script.c | 4 ++--
 tools/perf/util/session.c   | 6 +++++-
 tools/perf/util/session.h   | 2 +-
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index dbf208f0cdc2..60fde9f5025c 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -579,7 +579,7 @@ static void print_sample_bts(struct perf_sample *sample,
 				print_opts &= ~PRINT_IP_OPT_SRCLINE;
 			}
 		}
-		perf_evsel__print_ip(evsel, sample, al, print_opts,
+		perf_evsel__print_ip(evsel, sample, al, 0, print_opts,
 				     scripting_max_stack, stdout);
 	}
 
@@ -788,7 +788,7 @@ static void process_event(struct perf_script *script,
 		else
 			printf("\n");
 
-		perf_evsel__print_ip(evsel, sample, al,
+		perf_evsel__print_ip(evsel, sample, al, 0,
 				     output[attr->type].print_ip_opts,
 				     scripting_max_stack, stdout);
 	}
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index bbac0efbc10c..62b6d4051b99 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1954,7 +1954,7 @@ struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
 }
 
 void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
-			  struct addr_location *al,
+			  struct addr_location *al, int left_alignment,
 			  unsigned int print_opts, unsigned int stack_depth,
 			  FILE *fp)
 {
@@ -1992,6 +1992,8 @@ void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
 			if (node->sym && node->sym->ignore)
 				goto next;
 
+			fprintf(fp, "%-*.*s", left_alignment, left_alignment, " ");
+
 			if (print_ip)
 				fprintf(fp, "%c%16" PRIx64, s, node->ip);
 
@@ -2032,6 +2034,8 @@ next:
 		if (al->sym && al->sym->ignore)
 			return;
 
+		fprintf(fp, "%-*.*s", left_alignment, left_alignment, " ");
+
 		if (print_ip)
 			fprintf(fp, "%16" PRIx64, sample->ip);
 
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 0ee3d9dbc099..a6bc4ddbae3e 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -105,7 +105,7 @@ struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
 					    unsigned int type);
 
 void perf_evsel__print_ip(struct perf_evsel *evsel, struct perf_sample *sample,
-			  struct addr_location *al,
+			  struct addr_location *al, int left_alignment,
 			  unsigned int print_opts, unsigned int stack_depth,
 			  FILE *fp);
 
-- 
2.5.5