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Message-ID: <1454680939-24963-47-git-send-email-wangnan0@huawei.com>
Date: Fri, 5 Feb 2016 14:02:11 +0000
From: Wang Nan <wangnan0@...wei.com>
To: Alexei Starovoitov <ast@...nel.org>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Brendan Gregg <brendan.d.gregg@...il.com>
CC: Adrian Hunter <adrian.hunter@...el.com>,
Cody P Schafer <dev@...yps.com>,
"David S. Miller" <davem@...emloft.net>,
He Kuang <hekuang@...wei.com>,
Jérémie Galarneau
<jeremie.galarneau@...icios.com>, Jiri Olsa <jolsa@...nel.org>,
Kirill Smelkov <kirr@...edi.com>,
Li Zefan <lizefan@...wei.com>,
Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
Namhyung Kim <namhyung@...nel.org>,
Peter Zijlstra <peterz@...radead.org>, <pi3orama@....com>,
Wang Nan <wangnan0@...wei.com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 46/54] perf tools: Enable overwrite settings
This patch allows following config terms and option:
# perf record --overwrite ...
Globally set following events to overwrite;
# perf record --event cycles/overwrite/ ...
# perf record --event cycles/no-overwrite/ ...
Set specific events to be overwrite or no-overwrite.
Signed-off-by: Wang Nan <wangnan0@...wei.com>
Signed-off-by: He Kuang <hekuang@...wei.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Zefan Li <lizefan@...wei.com>
Cc: pi3orama@....com
---
tools/perf/builtin-record.c | 1 +
tools/perf/perf.h | 1 +
tools/perf/util/evsel.c | 4 ++++
tools/perf/util/evsel.h | 2 ++
tools/perf/util/parse-events.c | 14 ++++++++++++++
tools/perf/util/parse-events.h | 4 +++-
tools/perf/util/parse-events.l | 2 ++
7 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 503eee9..f416296 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1271,6 +1271,7 @@ struct option __record_options[] = {
OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit,
&record.opts.no_inherit_set,
"child tasks do not inherit counters"),
+ OPT_BOOLEAN(0, "overwrite", &record.opts.overwrite, "use overwrite mode"),
OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"),
OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]",
"number of mmap data pages and AUX area tracing mmap pages",
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 00c25b1..ea7f6f5 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -58,6 +58,7 @@ struct record_opts {
bool full_auxtrace;
bool auxtrace_snapshot_mode;
bool record_switch_events;
+ bool overwrite;
unsigned int freq;
unsigned int mmap_pages;
unsigned int auxtrace_mmap_pages;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 60529e5..211e27d 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -670,6 +670,9 @@ static void apply_config_terms(struct perf_evsel *evsel,
*/
attr->inherit = term->val.inherit ? 1 : 0;
break;
+ case PERF_EVSEL__CONFIG_TERM_OVERWRITE:
+ evsel->overwrite = term->val.overwrite ? 1 : 0;
+ break;
default:
break;
}
@@ -745,6 +748,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1;
attr->inherit = !opts->no_inherit;
+ evsel->overwrite = opts->overwrite;
perf_evsel__set_sample_bit(evsel, IP);
perf_evsel__set_sample_bit(evsel, TID);
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 03c70e5..aa976f9 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -44,6 +44,7 @@ enum {
PERF_EVSEL__CONFIG_TERM_CALLGRAPH,
PERF_EVSEL__CONFIG_TERM_STACK_USER,
PERF_EVSEL__CONFIG_TERM_INHERIT,
+ PERF_EVSEL__CONFIG_TERM_OVERWRITE,
PERF_EVSEL__CONFIG_TERM_MAX,
};
@@ -57,6 +58,7 @@ struct perf_evsel_config_term {
char *callgraph;
u64 stack_user;
bool inherit;
+ bool overwrite;
} val;
};
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 8e0f401..b809c3b 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -951,6 +951,12 @@ do { \
case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
CHECK_TYPE_VAL(NUM);
break;
+ case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
+ CHECK_TYPE_VAL(NUM);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
+ CHECK_TYPE_VAL(NUM);
+ break;
case PARSE_EVENTS__TERM_TYPE_NAME:
CHECK_TYPE_VAL(STR);
break;
@@ -1004,6 +1010,8 @@ static int config_term_tracepoint(struct perf_event_attr *attr,
case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
case PARSE_EVENTS__TERM_TYPE_INHERIT:
case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
+ case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
+ case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
return config_term_common(attr, term, err);
default:
if (err) {
@@ -1073,6 +1081,12 @@ do { \
case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
break;
+ case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
+ ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
+ break;
+ case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
+ ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
+ break;
default:
break;
}
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index ad1f78f..425750d 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -68,7 +68,9 @@ enum {
PARSE_EVENTS__TERM_TYPE_CALLGRAPH,
PARSE_EVENTS__TERM_TYPE_STACKSIZE,
PARSE_EVENTS__TERM_TYPE_NOINHERIT,
- PARSE_EVENTS__TERM_TYPE_INHERIT
+ PARSE_EVENTS__TERM_TYPE_INHERIT,
+ PARSE_EVENTS__TERM_TYPE_NOOVERWRITE,
+ PARSE_EVENTS__TERM_TYPE_OVERWRITE,
};
struct parse_events_array {
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 27d567f..2ef6f96 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -202,6 +202,8 @@ call-graph { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); }
stack-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); }
inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); }
no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); }
+overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_OVERWRITE); }
+no-overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOOVERWRITE); }
, { return ','; }
"/" { BEGIN(INITIAL); return '/'; }
{name_minus} { return str(yyscanner, PE_NAME); }
--
1.8.3.4
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