From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@kernel.org>,
David Ahern <dsahern@gmail.com>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 08/19] perf mem: Add --ldlat option
Date: Wed, 15 Jun 2016 15:13:17 -0300 [thread overview]
Message-ID: <1466014408-12086-9-git-send-email-acme@kernel.org> (raw)
In-Reply-To: <1466014408-12086-1-git-send-email-acme@kernel.org>
From: Jiri Olsa <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
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1465928361-2442-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
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);
--
2.5.5
next prev parent reply other threads:[~2016-06-15 18:17 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-15 18:13 [GIT PULL 00/19] perf/core improvements and fixes Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 01/19] perf config: Handle NULL at perf_config_set__delete() Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 02/19] perf tools: Fix rm_rf() to handle non-regular files correctly Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 03/19] perf probe: Fix to add NULL check for strndup Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 04/19] perf buildid: Rename and export build_id_cache__cachedir() Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 05/19] perf probe: Add perf_probe_event__copy() Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 06/19] perf probe: Uncomment and export synthesize_perf_probe_point() Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 07/19] perf unwind: Fix compile error for static cross build Arnaldo Carvalho de Melo
2016-06-15 18:13 ` Arnaldo Carvalho de Melo [this message]
2016-06-15 18:13 ` [PATCH 09/19] perf tools: Fix Data Object sort entry width index Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 10/19] perf tui: Separate hierarchy and standard headers output Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 11/19] perf stdio: Separate " Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 12/19] perf stdio: Separate hierarchy " Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 13/19] perf stdio: Separate standard " Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 14/19] perf stdio: Do not pass hists in hist_entry__fprintf Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 15/19] perf stdio: Add use_callchain parameter to hists__fprintf Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 16/19] perf hists: Replace perf_evsel arg perf_hpp_fmt's header callback Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 17/19] perf hists: Replace perf_evsel arg perf_hpp_fmt's width callback Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 18/19] perf probe: Introduce perf_cache interfaces Arnaldo Carvalho de Melo
2016-06-15 18:13 ` [PATCH 19/19] perf probe: Add --cache option to cache the probe definitions Arnaldo Carvalho de Melo
2016-06-16 6:29 ` [GIT PULL 00/19] perf/core improvements and fixes Jiri Olsa
2016-06-16 19:54 ` Arnaldo Carvalho de Melo
2016-06-16 8:29 ` Ingo Molnar
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