[PATCH 19/56] perf tools: Add attr_update event unit type
From: Jiri Olsa
Date: Tue Oct 06 2015 - 16:08:15 EST
Adding unit type attr update event, that stores/transfer
events unit name. The unit name is part of the perf stat
output data.
Link: http://lkml.kernel.org/n/tip-5s6ape0vz2sfxgzu16eu8y7r@xxxxxxxxxxxxxx
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
tools/perf/tests/Build | 1 +
tools/perf/tests/attr_update.c | 41 ++++++++++++++++++++++++++++++++++++++
tools/perf/tests/builtin-test.c | 4 ++++
tools/perf/tests/tests.h | 1 +
tools/perf/util/event.h | 8 ++++++++
tools/perf/util/header.c | 44 +++++++++++++++++++++++++++++++++++++++++
tools/perf/util/header.h | 3 +++
7 files changed, 102 insertions(+)
create mode 100644 tools/perf/tests/attr_update.c
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index ea4ef8fdd463..039bba2918b0 100644
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -35,6 +35,7 @@ perf-y += llvm.o
perf-y += topology.o
perf-y += cpumap.o
perf-y += stat.o
+perf-y += attr_update.o
ifeq ($(ARCH),$(filter $(ARCH),x86 arm arm64))
perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
diff --git a/tools/perf/tests/attr_update.c b/tools/perf/tests/attr_update.c
new file mode 100644
index 000000000000..cfdb56cf3a95
--- /dev/null
+++ b/tools/perf/tests/attr_update.c
@@ -0,0 +1,41 @@
+#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 attr_update_event *ev = (struct attr_update_event*) event;
+
+ TEST_ASSERT_VAL("wrong id", ev->id == 123);
+ TEST_ASSERT_VAL("wrong unit", !strcmp(ev->str, "KRAVA"));
+ return 0;
+}
+
+int test__attr_update(void)
+{
+ 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_attr_update_unit(NULL, evsel, process_event_unit));
+
+ return 0;
+}
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 44f30d1997ad..d488e12e72c2 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -187,6 +187,10 @@ static struct test generic_tests[] = {
.func = test__synthesize_stat_round,
},
{
+ .desc = "Test attr update synthesize",
+ .func = test__attr_update,
+ },
+ {
.func = NULL,
},
};
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index 261716924ad9..e4e3cebcb7f3 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -72,6 +72,7 @@ int test__cpu_map_synthesize(void);
int test__synthesize_stat_config(void);
int test__synthesize_stat(void);
int test__synthesize_stat_round(void);
+int test__attr_update(void);
#if defined(__arm__) || defined(__aarch64__)
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 164ff6864ef9..501bb4a40982 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -282,10 +282,18 @@ struct attr_event {
u64 id[];
};
+
+enum {
+ PERF_ATTR_UPDATE__UNIT = 0,
+};
+
struct attr_update_event {
struct perf_event_header header;
u64 type;
u64 id;
+
+ /* Having 'str' for all string updates. */
+ char str[];
};
#define MAX_EVENT_NAME 64
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 437856eec7c4..a3f4bd45d880 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 attr_update_event*
+attr_update_event__alloc(size_t size, u64 type, u64 id)
+{
+ struct attr_update_event *ev;
+
+ size += sizeof(*ev);
+ size = PERF_ALIGN(size, sizeof(u64));
+
+ ev = zalloc(size);
+ if (ev) {
+ ev->header.type = PERF_RECORD_HEADER_ATTR_UPDATE;
+ ev->header.size = (u16)size;
+ ev->type = type;
+ ev->id = id;
+ }
+ return ev;
+}
+
+int
+perf_event__synthesize_attr_update_unit(struct perf_tool *tool,
+ struct perf_evsel *evsel,
+ perf_event__handler_t process)
+{
+ struct attr_update_event *ev;
+ size_t size = strlen(evsel->unit);
+ int err;
+
+ ev = attr_update_event__alloc(size + 1, PERF_ATTR_UPDATE__UNIT, evsel->id[0]);
+ if (ev == NULL)
+ return -ENOMEM;
+
+ strncpy(ev->str, 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_attr_update(struct perf_tool *tool __maybe_unused,
if (evsel == NULL)
return -EINVAL;
+ switch (ev->type) {
+ case PERF_ATTR_UPDATE__UNIT:
+ evsel->unit = strdup(ev->str);
+ default:
+ break;
+ }
+
return 0;
}
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 069298367348..0f00ff55f451 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_attr_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_attr_update(struct perf_tool *tool __maybe_unused,
--
2.4.3
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