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Subject[PATCH v2 5/9] perf, tools: Do guest-only counting in perf-kvm by default
Date
From: Joerg Roedel <joerg.roedel@amd.com>

Make use of exclude_guest and exlude_host in perf-kvm to do
only guest-only counting by default.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
tools/perf/builtin-kvm.c | 3 ++-
tools/perf/util/event.c | 8 ++++++++
tools/perf/util/event.h | 2 ++
tools/perf/util/evlist.c | 5 ++++-
tools/perf/util/parse-events.c | 1 +
5 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 032324a..9b05afa 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -107,7 +107,8 @@ static int __cmd_buildid_list(int argc, const char **argv)

int cmd_kvm(int argc, const char **argv, const char *prefix __used)
{
- perf_host = perf_guest = 0;
+ perf_host = 0;
+ perf_guest = 1;

argc = parse_options(argc, argv, kvm_options, kvm_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 437f8ca..31a6d7f 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -44,6 +44,14 @@ static struct perf_sample synth_sample = {
.period = 1,
};

+void event_attr_init(struct perf_event_attr *attr)
+{
+ if (!perf_host)
+ attr->exclude_host = 1;
+ if (!perf_guest)
+ attr->exclude_guest = 1;
+}
+
static pid_t perf_event__synthesize_comm(union perf_event *event, pid_t pid,
int full, perf_event__handler_t process,
struct perf_session *session)
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 357a85b..e5f101e 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -150,6 +150,8 @@ typedef int (*perf_event__handler_t)(union perf_event *event,
struct perf_sample *sample,
struct perf_session *session);

+void event_attr_init(struct perf_event_attr *attr);
+
int perf_event__synthesize_thread_map(struct thread_map *threads,
perf_event__handler_t process,
struct perf_session *session);
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 72e9f48..4773fbe 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -82,8 +82,11 @@ int perf_evlist__add_default(struct perf_evlist *evlist)
.type = PERF_TYPE_HARDWARE,
.config = PERF_COUNT_HW_CPU_CYCLES,
};
- struct perf_evsel *evsel = perf_evsel__new(&attr, 0);
+ struct perf_evsel *evsel;
+
+ event_attr_init(&attr);

+ evsel = perf_evsel__new(&attr, 0);
if (evsel == NULL)
goto error;

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 3b00775..620ba98 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -848,6 +848,7 @@ int parse_events(struct perf_evlist *evlist , const char *str, int unset __used)
for (;;) {
ostr = str;
memset(&attr, 0, sizeof(attr));
+ event_attr_init(&attr);
ret = parse_event_symbols(evlist, &str, &attr);
if (ret == EVT_FAILED)
return -1;
--
1.7.5.3


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