[PATCH 19/43] perf tools: Add event_update event unit type
From: Arnaldo Carvalho de Melo
Date: Thu Dec 17 2015 - 14:53:47 EST
From: Jiri Olsa <jolsa@xxxxxxxxxx>
Adding unit type 'event update' event, that stores/transfer events unit
name. The unit name is part of the perf stat output data.
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Tested-by: Kan Liang <kan.liang@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1445784728-21732-22-git-send-email-jolsa@xxxxxxxxxx
[ Rename __alloc() to __new() for consistency ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/tests/Build | 1 +
tools/perf/tests/builtin-test.c | 4 ++++
tools/perf/tests/event_update.c | 42 +++++++++++++++++++++++++++++++++++++++
tools/perf/tests/tests.h | 1 +
tools/perf/util/event.h | 4 ++++
tools/perf/util/header.c | 44 +++++++++++++++++++++++++++++++++++++++++
tools/perf/util/header.h | 3 +++
7 files changed, 99 insertions(+)
create mode 100644 tools/perf/tests/event_update.c
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index fc0293150f93..614899b88b37 100644
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -36,6 +36,7 @@ perf-y += bpf.o
perf-y += topology.o
perf-y += cpumap.o
perf-y += stat.o
+perf-y += event_update.o
$(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c tests/Build
$(call rule_mkdir)
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 6a3519814492..f2b1dcac45d3 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -200,6 +200,10 @@ static struct test generic_tests[] = {
.func = test__synthesize_stat_round,
},
{
+ .desc = "Test attr update synthesize",
+ .func = test__event_update,
+ },
+ {
.func = NULL,
},
};
diff --git a/tools/perf/tests/event_update.c b/tools/perf/tests/event_update.c
new file mode 100644
index 000000000000..9cdf4c934977
--- /dev/null
+++ b/tools/perf/tests/event_update.c
@@ -0,0 +1,42 @@
+#include <linux/compiler.h>
+#include "evlist.h"
+#include "evsel.h"
+#include "machine.h"
+#include "tests.h"
+#include "debug.h"
+
+static int process_event_unit(struct perf_tool *tool __maybe_unused,
+ union perf_event *event,
+ struct perf_sample *sample __maybe_unused,
+ struct machine *machine __maybe_unused)
+{
+ struct event_update_event *ev = (struct event_update_event *) event;
+
+ TEST_ASSERT_VAL("wrong id", ev->id == 123);
+ TEST_ASSERT_VAL("wrong id", ev->type == PERF_EVENT_UPDATE__UNIT);
+ TEST_ASSERT_VAL("wrong unit", !strcmp(ev->data, "KRAVA"));
+ return 0;
+}
+
+int test__event_update(int subtest __maybe_unused)
+{
+ struct perf_evlist *evlist;
+ struct perf_evsel *evsel;
+
+ evlist = perf_evlist__new_default();
+ TEST_ASSERT_VAL("failed to get evlist", evlist);
+
+ evsel = perf_evlist__first(evlist);
+
+ TEST_ASSERT_VAL("failed to allos ids",
+ !perf_evsel__alloc_id(evsel, 1, 1));
+
+ perf_evlist__id_add(evlist, evsel, 0, 0, 123);
+
+ evsel->unit = strdup("KRAVA");
+
+ TEST_ASSERT_VAL("failed to synthesize attr update unit",
+ !perf_event__synthesize_event_update_unit(NULL, evsel, process_event_unit));
+
+ return 0;
+}
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index a82ab9c4c0ca..82b2b5e6ba7c 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -84,6 +84,7 @@ int test__cpu_map_synthesize(int subtest);
int test__synthesize_stat_config(int subtest);
int test__synthesize_stat(int subtest);
int test__synthesize_stat_round(int subtest);
+int test__event_update(int subtest);
#if defined(__arm__) || defined(__aarch64__)
#ifdef HAVE_DWARF_UNWIND_SUPPORT
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 6966a4b7c0f0..64c4cdf5aada 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -308,6 +308,10 @@ struct attr_event {
u64 id[];
};
+enum {
+ PERF_EVENT_UPDATE__UNIT = 0,
+};
+
struct event_update_event {
struct perf_event_header header;
u64 type;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 6b4e00220a5a..5759ebfde666 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2686,6 +2686,43 @@ int perf_event__synthesize_attr(struct perf_tool *tool,
return err;
}
+static struct event_update_event *
+event_update_event__new(size_t size, u64 type, u64 id)
+{
+ struct event_update_event *ev;
+
+ size += sizeof(*ev);
+ size = PERF_ALIGN(size, sizeof(u64));
+
+ ev = zalloc(size);
+ if (ev) {
+ ev->header.type = PERF_RECORD_EVENT_UPDATE;
+ ev->header.size = (u16)size;
+ ev->type = type;
+ ev->id = id;
+ }
+ return ev;
+}
+
+int
+perf_event__synthesize_event_update_unit(struct perf_tool *tool,
+ struct perf_evsel *evsel,
+ perf_event__handler_t process)
+{
+ struct event_update_event *ev;
+ size_t size = strlen(evsel->unit);
+ int err;
+
+ ev = event_update_event__new(size + 1, PERF_EVENT_UPDATE__UNIT, evsel->id[0]);
+ if (ev == NULL)
+ return -ENOMEM;
+
+ strncpy(ev->data, evsel->unit, size);
+ err = process(tool, (union perf_event *)ev, NULL, NULL);
+ free(ev);
+ return err;
+}
+
int perf_event__synthesize_attrs(struct perf_tool *tool,
struct perf_session *session,
perf_event__handler_t process)
@@ -2762,6 +2799,13 @@ int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
if (evsel == NULL)
return -EINVAL;
+ switch (ev->type) {
+ case PERF_EVENT_UPDATE__UNIT:
+ evsel->unit = strdup(ev->data);
+ default:
+ break;
+ }
+
return 0;
}
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 1e843c67a4ff..6aa2b9242fc1 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -105,6 +105,9 @@ int perf_event__synthesize_attr(struct perf_tool *tool,
int perf_event__synthesize_attrs(struct perf_tool *tool,
struct perf_session *session,
perf_event__handler_t process);
+int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
+ struct perf_evsel *evsel,
+ perf_event__handler_t process);
int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
struct perf_evlist **pevlist);
int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
--
2.1.0
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