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perf tools: Enable config raw and numeric events

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This patch allows setting config terms for raw and numeric events.
For example:

  # perf stat -e cycles/name=cyc/ ls
  ...
  1821108      cyc
  ...

  # perf stat -e r6530160/name=event/ ls
  ...
  1103195      event
  ...

  # perf record -e cycles -e 4:0x6530160/name=evtx,call-graph=fp/ -a sleep 1
  ...
  # perf report --stdio
  ...
  # Samples: 124  of event 'cycles'
  46.61%     0.00%  swapper        [kernel.vmlinux]            [k] cpu_startup_entry
  41.26%     0.00%  swapper        [kernel.vmlinux]            [k] start_secondary
  ...
  # Samples: 91  of event 'evtx'
  ...
  93.76%     0.00%  swapper      [kernel.vmlinux]            [k] cpu_startup_entry
          |
          ---cpu_startup_entry
             |
             |--66.63%--call_cpuidle
             |          cpuidle_enter
             |          |
  ...

3 test cases are introduced to test config terms for symbol, raw and
numeric events.

Committer note:

Further testing shows that we can retrieve the event name using 'perf
evlist -v' and looking at the 'config' perf_event_attr field, i.e.:

  # perf record -e cycles -e 4:0x6530160/name=evtx,call-graph=fp/ -a sleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 1.724 MB perf.data (2076 samples) ]
  # perf evlist
  cycles
  evtx
  # perf evlist -v
  cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CPU|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1
evtx: type: 4, size: 112, config: 0x6530160, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|CALLCHAIN|CPU|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
  #

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jeremie Galarneau <jeremie.galarneau@efficios.com>
Cc: Kirill Smelkov <kirr@nexedi.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1455882283-79592-13-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Wang Nan
2016-02-19 11:44:00 +00:00
committed by Arnaldo Carvalho de Melo
parent 1d55e8ef34
commit 10bf358a1b
3 changed files with 48 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
tools/perf/tests/parse-events.c
View File

@@ -1271,6 +1271,31 @@ static int test__checkevent_precise_max_modifier(struct perf_evlist *evlist)
return 0;
}
static int test__checkevent_config_symbol(struct perf_evlist *evlist)
{
struct perf_evsel *evsel = perf_evlist__first(evlist);
TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "insn") == 0);
return 0;
}
static int test__checkevent_config_raw(struct perf_evlist *evlist)
{
struct perf_evsel *evsel = perf_evlist__first(evlist);
TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "rawpmu") == 0);
return 0;
}
static int test__checkevent_config_num(struct perf_evlist *evlist)
{
struct perf_evsel *evsel = perf_evlist__first(evlist);
TEST_ASSERT_VAL("wrong name setting", strcmp(evsel->name, "numpmu") == 0);
return 0;
}
static int count_tracepoints(void)
{
struct dirent *events_ent;
@@ -1579,6 +1604,21 @@ static struct evlist_test test__events[] = {
.check = test__checkevent_precise_max_modifier,
.id = 47,
},
{
.name = "instructions/name=insn/",
.check = test__checkevent_config_symbol,
.id = 48,
},
{
.name = "r1234/name=rawpmu/",
.check = test__checkevent_config_raw,
.id = 49,
},
{
.name = "4:0x6530160/name=numpmu/",
.check = test__checkevent_config_num,
.id = 50,
},
};
static struct evlist_test test__events_pmu[] = {

3
tools/perf/util/parse-events.c
View File

@@ -1043,7 +1043,8 @@ int parse_events_add_numeric(struct parse_events_evlist *data,
return -ENOMEM;
}
return add_event(list, &data->idx, &attr, NULL, &config_terms);
return add_event(list, &data->idx, &attr,
get_config_name(head_config), &config_terms);
}
int parse_events_add_pmu(struct parse_events_evlist *data,

10
tools/perf/util/parse-events.y
View File

@@ -407,24 +407,26 @@ PE_NAME ':' PE_NAME
}
event_legacy_numeric:
PE_VALUE ':' PE_VALUE
PE_VALUE ':' PE_VALUE opt_event_config
{
struct parse_events_evlist *data = _data;
struct list_head *list;
ALLOC_LIST(list);
ABORT_ON(parse_events_add_numeric(data, list, (u32)$1, $3, NULL));
ABORT_ON(parse_events_add_numeric(data, list, (u32)$1, $3, $4));
parse_events_terms__delete($4);
$$ = list;
}
event_legacy_raw:
PE_RAW
PE_RAW opt_event_config
{
struct parse_events_evlist *data = _data;
struct list_head *list;
ALLOC_LIST(list);
ABORT_ON(parse_events_add_numeric(data, list, PERF_TYPE_RAW, $1, NULL));
ABORT_ON(parse_events_add_numeric(data, list, PERF_TYPE_RAW, $1, $2));
parse_events_terms__delete($2);
$$ = list;
}