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From: Jiri Olsa <jolsa@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
	David Ahern <dsahern@gmail.com>, Ingo Molnar <mingo@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [PATCH 01/11] perf mem: Add --ldlat option
Date: Tue, 14 Jun 2016 20:19:11 +0200
Message-ID: <1465928361-2442-2-git-send-email-jolsa@kernel.org> (raw)
In-Reply-To: <1465928361-2442-1-git-send-email-jolsa@kernel.org>

Adding --ldlat option to specify desired latency
for loads event.

Specify 50 as loads event latency:

  $ perf mem record -e ldlat-loads -v --ldlat 50 true
  calling: record -W -d -e cpu/mem-loads,ldlat=50/P true

Link: http://lkml.kernel.org/n/tip-ec2m0cvivkfs8uhtiv411hfc@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/Documentation/perf-mem.txt |  3 +++
 tools/perf/builtin-mem.c              |  1 +
 tools/perf/util/mem-events.c          | 17 ++++++++++++++++-
 tools/perf/util/mem-events.h          |  1 +
 4 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt
index 1d6092c460dd..73496320fca3 100644
--- a/tools/perf/Documentation/perf-mem.txt
+++ b/tools/perf/Documentation/perf-mem.txt
@@ -56,6 +56,9 @@ OPTIONS
 --all-user::
 	Configure all used events to run in user space.
 
+--ldload::
+	Specify desired latency for loads event.
+
 SEE ALSO
 --------
 linkperf:perf-record[1], linkperf:perf-report[1]
diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 1dc140c5481d..d608a2c9e48c 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -67,6 +67,7 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
 	OPT_CALLBACK('e', "event", &mem, "event",
 		     "event selector. use 'perf mem record -e list' to list available events",
 		     parse_record_events),
+	OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"),
 	OPT_INCR('v', "verbose", &verbose,
 		 "be more verbose (show counter open errors, etc)"),
 	OPT_BOOLEAN('U', "--all-user", &all_user, "collect only user level data"),
diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index 75465f89a413..bbc368e7d1e4 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -10,18 +10,33 @@
 #include "debug.h"
 #include "symbol.h"
 
+unsigned int perf_mem_events__loads_ldlat = 30;
+
 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
 
 struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
-	E("ldlat-loads",	"cpu/mem-loads,ldlat=30/P",	"mem-loads"),
+	E("ldlat-loads",	"cpu/mem-loads,ldlat=%u/P",	"mem-loads"),
 	E("ldlat-stores",	"cpu/mem-stores/P",		"mem-stores"),
 };
 #undef E
 
 #undef E
 
+static char mem_loads_name[100];
+static bool mem_loads_name__init;
+
 char *perf_mem_events__name(int i)
 {
+	if (i == PERF_MEM_EVENTS__LOAD) {
+		if (!mem_loads_name__init) {
+			mem_loads_name__init = true;
+			scnprintf(mem_loads_name, sizeof(mem_loads_name),
+				  perf_mem_events[i].name,
+				  perf_mem_events__loads_ldlat);
+		}
+		return mem_loads_name;
+	}
+
 	return (char *)perf_mem_events[i].name;
 }
 
diff --git a/tools/perf/util/mem-events.h b/tools/perf/util/mem-events.h
index 5d6d93066a6e..7f69bf9d789d 100644
--- a/tools/perf/util/mem-events.h
+++ b/tools/perf/util/mem-events.h
@@ -18,6 +18,7 @@ enum {
 };
 
 extern struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX];
+extern unsigned int perf_mem_events__loads_ldlat;
 
 int perf_mem_events__parse(const char *str);
 int perf_mem_events__init(void);
-- 
2.4.11

  reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-14 18:19 [PATCH 00/11] perf tools: Various fixes Jiri Olsa
2016-06-14 18:19 ` Jiri Olsa [this message]
2016-06-16  8:34   ` [tip:perf/core] perf mem: Add --ldlat option tip-bot for Jiri Olsa
2016-06-14 18:19 ` [PATCH 02/11] perf tools: Fix Data Object sort entry width index Jiri Olsa
2016-06-16  8:34   ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-06-14 18:19 ` [PATCH 03/11] perf tools tui: Separate hierarchy and standard headers output Jiri Olsa
2016-06-16  8:35   ` [tip:perf/core] perf " tip-bot for Jiri Olsa
2016-06-14 18:19 ` [PATCH 04/11] perf tools stdio: Separate " Jiri Olsa
2016-06-16  8:35   ` [tip:perf/core] perf " tip-bot for Jiri Olsa
2016-06-14 18:19 ` [PATCH 05/11] perf tools stdio: Separate hierarchy " Jiri Olsa
2016-06-16  8:36   ` [tip:perf/core] perf " tip-bot for Jiri Olsa
2016-06-14 18:19 ` [PATCH 06/11] perf tools stdio: Separate standard " Jiri Olsa
2016-06-16  8:36   ` [tip:perf/core] perf " tip-bot for Jiri Olsa
2016-06-14 18:19 ` [PATCH 07/11] perf tools stdio: Do not pass hists in hist_entry__fprintf Jiri Olsa
2016-06-16  8:37   ` [tip:perf/core] perf " tip-bot for Jiri Olsa
2016-06-14 18:19 ` [PATCH 08/11] perf tools stdio: Add use_callchain parameter to hists__fprintf Jiri Olsa
2016-06-16  8:37   ` [tip:perf/core] perf " tip-bot for Jiri Olsa
2016-06-14 18:19 ` [PATCH 09/11] perf tools: Replace perf_evsel arg perf_hpp_fmt's header callback Jiri Olsa
2016-06-16  8:38   ` [tip:perf/core] perf hists: " tip-bot for Jiri Olsa
2016-06-14 18:19 ` [PATCH 10/11] perf tools: Replace perf_evsel arg perf_hpp_fmt's width callback Jiri Olsa
2016-06-16  8:38   ` [tip:perf/core] perf hists: " tip-bot for Jiri Olsa
2016-06-14 18:19 ` [PATCH 11/11] perf tools: Rename __hists__add_entry to hists__add_entry Jiri Olsa
2016-06-22  7:41   ` [tip:perf/core] perf hists: " tip-bot for Jiri Olsa

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