perf evlist: Don't die if sample_{id_all|type} is invalid
Fixes two more cases where the python binding would not load:
. Not finding die(), which it shouldn't anyway, not good to just stop the
world because some particular perf.data file is invalid, just propagate
the error to the caller.
. Not finding perf_sample_size: fix it by moving it from event.c to evsel,
where it belongs, as most cases are moving to operate on an evsel object.o
One of the fixed problems:
[root@emilia ~]# python
>>> import perf
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: perf_sample_size
>>>
[root@emilia ~]#
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-1hkj7b2cvgbfnoizsekjb6c9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index b671862..2da9162 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -474,7 +474,7 @@
unsigned int nr_events[nsyscalls],
expected_nr_events[nsyscalls], i, j;
struct perf_evsel *evsels[nsyscalls], *evsel;
- int sample_size = perf_sample_size(attr.sample_type);
+ int sample_size = __perf_evsel__sample_size(attr.sample_type);
for (i = 0; i < nsyscalls; ++i) {
char name[64];
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 0fe9adf..3c1b8a6 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -35,22 +35,6 @@
return perf_event__names[id];
}
-int perf_sample_size(u64 sample_type)
-{
- u64 mask = sample_type & PERF_SAMPLE_MASK;
- int size = 0;
- int i;
-
- for (i = 0; i < 64; i++) {
- if (mask & (1ULL << i))
- size++;
- }
-
- size *= sizeof(u64);
-
- return size;
-}
-
static struct perf_sample synth_sample = {
.pid = -1,
.tid = -1,
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index c083328..1d7f664 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -82,8 +82,6 @@
struct ip_callchain *callchain;
};
-int perf_sample_size(u64 sample_type);
-
#define BUILD_ID_SIZE 20
struct build_id_event {
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 04c8a60..b021ea9 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -455,33 +455,46 @@
return 0;
}
-u64 perf_evlist__sample_type(struct perf_evlist *evlist)
+bool perf_evlist__valid_sample_type(const struct perf_evlist *evlist)
{
- struct perf_evsel *pos;
- u64 type = 0;
+ struct perf_evsel *pos, *first;
- list_for_each_entry(pos, &evlist->entries, node) {
- if (!type)
- type = pos->attr.sample_type;
- else if (type != pos->attr.sample_type)
- die("non matching sample_type");
+ pos = first = list_entry(evlist->entries.next, struct perf_evsel, node);
+
+ list_for_each_entry_continue(pos, &evlist->entries, node) {
+ if (first->attr.sample_type != pos->attr.sample_type)
+ return false;
}
- return type;
+ return true;
+}
+
+u64 perf_evlist__sample_type(const struct perf_evlist *evlist)
+{
+ struct perf_evsel *first;
+
+ first = list_entry(evlist->entries.next, struct perf_evsel, node);
+ return first->attr.sample_type;
+}
+
+bool perf_evlist__valid_sample_id_all(const struct perf_evlist *evlist)
+{
+ struct perf_evsel *pos, *first;
+
+ pos = first = list_entry(evlist->entries.next, struct perf_evsel, node);
+
+ list_for_each_entry_continue(pos, &evlist->entries, node) {
+ if (first->attr.sample_id_all != pos->attr.sample_id_all)
+ return false;
+ }
+
+ return true;
}
bool perf_evlist__sample_id_all(const struct perf_evlist *evlist)
{
- bool value = false, first = true;
- struct perf_evsel *pos;
+ struct perf_evsel *first;
- list_for_each_entry(pos, &evlist->entries, node) {
- if (first) {
- value = pos->attr.sample_id_all;
- first = false;
- } else if (value != pos->attr.sample_id_all)
- die("non matching sample_id_all");
- }
-
- return value;
+ first = list_entry(evlist->entries.next, struct perf_evsel, node);
+ return first->attr.sample_id_all;
}
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 0a1ef1f..b2b8623 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -66,7 +66,9 @@
void perf_evlist__delete_maps(struct perf_evlist *evlist);
int perf_evlist__set_filters(struct perf_evlist *evlist);
-u64 perf_evlist__sample_type(struct perf_evlist *evlist);
-bool perf_evlist__sample_id_all(const struct perf_evlist *evlist);
+u64 perf_evlist__sample_type(const struct perf_evlist *evlist);
+bool perf_evlist__sample_id_all(const const struct perf_evlist *evlist);
+bool perf_evlist__valid_sample_type(const struct perf_evlist *evlist);
+bool perf_evlist__valid_sample_id_all(const struct perf_evlist *evlist);
#endif /* __PERF_EVLIST_H */
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index cca29ed..0239eb8 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -15,6 +15,22 @@
#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
+int __perf_evsel__sample_size(u64 sample_type)
+{
+ u64 mask = sample_type & PERF_SAMPLE_MASK;
+ int size = 0;
+ int i;
+
+ for (i = 0; i < 64; i++) {
+ if (mask & (1ULL << i))
+ size++;
+ }
+
+ size *= sizeof(u64);
+
+ return size;
+}
+
void perf_evsel__init(struct perf_evsel *evsel,
struct perf_event_attr *attr, int idx)
{
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index f79bb2c..7e9366e 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -149,4 +149,11 @@
return __perf_evsel__read(evsel, ncpus, nthreads, true);
}
+int __perf_evsel__sample_size(u64 sample_type);
+
+static inline int perf_evsel__sample_size(struct perf_evsel *evsel)
+{
+ return __perf_evsel__sample_size(evsel->attr.sample_type);
+}
+
#endif /* __PERF_EVSEL_H */
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 2dd1698..24063b4 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -692,7 +692,7 @@
first = list_entry(evlist->entries.next, struct perf_evsel, node);
err = perf_event__parse_sample(event, first->attr.sample_type,
- perf_sample_size(first->attr.sample_type),
+ perf_evsel__sample_size(first),
sample_id_all, &pevent->sample);
if (err)
return PyErr_Format(PyExc_OSError,
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 64500fc..f5a8fbd 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -58,6 +58,16 @@
goto out_close;
}
+ if (!perf_evlist__valid_sample_type(self->evlist)) {
+ pr_err("non matching sample_type");
+ goto out_close;
+ }
+
+ if (!perf_evlist__valid_sample_id_all(self->evlist)) {
+ pr_err("non matching sample_id_all");
+ goto out_close;
+ }
+
self->size = input_stat.st_size;
return 0;
@@ -97,7 +107,7 @@
void perf_session__update_sample_type(struct perf_session *self)
{
self->sample_type = perf_evlist__sample_type(self->evlist);
- self->sample_size = perf_sample_size(self->sample_type);
+ self->sample_size = __perf_evsel__sample_size(self->sample_type);
self->sample_id_all = perf_evlist__sample_id_all(self->evlist);
perf_session__id_header_size(self);
}