linux-kernel - [PATCH 02/15] perf mem: Introduce perf_mem_events_

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Message-Id: <1456303616-26926-3-git-send-email-jolsa@kernel.org>
Date:	Wed, 24 Feb 2016 09:46:43 +0100
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>,
	Stephane Eranian <eranian@...gle.com>,
	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 02/15] perf mem: Introduce perf_mem_events__name function

Wrap perf_mem_events[].name into perf_mem_events__name
function so we could alter the events name if needed.

This will be handy when changing latency settings for
loads event in following patch.

Link: http://lkml.kernel.org/n/tip-76wibzfbjamxfu7vapizsszj@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/builtin-mem.c     | 6 +++---
 tools/perf/util/mem-events.c | 5 +++++
 tools/perf/util/mem-events.h | 1 +
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index f1fa7b8d1f69..88aeac9aa1da 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -43,7 +43,7 @@ static int parse_record_events(const struct option *opt,
 		fprintf(stderr, "%-13s%-*s%s\n",
 			e->tag,
 			verbose ? 25 : 0,
-			verbose ? e->name : "",
+			verbose ? perf_mem_events__name(j) : "",
 			e->supported ? ": available" : "");
 	}
 	exit(0);
@@ -95,12 +95,12 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
 
 		if (!perf_mem_events[j].supported) {
 			pr_err("failed: event '%s' not supported\n",
-			       perf_mem_events[j].name);
+			       perf_mem_events__name(j));
 			return -1;
 		}
 
 		rec_argv[i++] = "-e";
-		rec_argv[i++] = perf_mem_events[j].name;
+		rec_argv[i++] = perf_mem_events__name(j);
 	};
 
 	for (j = 0; j < argc; j++, i++)
diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index e21853fe1312..0f62e930de13 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -19,6 +19,11 @@ struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
 
 #undef E
 
+char *perf_mem_events__name(int i)
+{
+	return (char *) perf_mem_events[i].name;
+}
+
 int perf_mem_events__parse(const char *str)
 {
 	char *tok, *saveptr = NULL;
diff --git a/tools/perf/util/mem-events.h b/tools/perf/util/mem-events.h
index 75c1660bda62..2a91b959de62 100644
--- a/tools/perf/util/mem-events.h
+++ b/tools/perf/util/mem-events.h
@@ -22,4 +22,5 @@ extern struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX];
 int perf_mem_events__parse(const char *str);
 int perf_mem_events__init(void);
 
+char *perf_mem_events__name(int i);
 #endif /* __PERF_MEM_EVENTS_H */
-- 
2.4.3