summaryrefslogtreecommitdiffstats
path: root/tools
diff options
context:
space:
mode:
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/evlist.c25
-rw-r--r--tools/perf/util/evsel.c8
2 files changed, 20 insertions, 13 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 08cedb643ea6..ed20f4379956 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -230,18 +230,33 @@ void perf_evlist__set_leader(struct perf_evlist *evlist)
}
}
-void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr)
+void perf_event_attr__set_max_precise_ip(struct perf_event_attr *pattr)
{
- attr->precise_ip = 3;
+ struct perf_event_attr attr = {
+ .type = PERF_TYPE_HARDWARE,
+ .config = PERF_COUNT_HW_CPU_CYCLES,
+ .exclude_kernel = 1,
+ .precise_ip = 3,
+ };
- while (attr->precise_ip != 0) {
- int fd = sys_perf_event_open(attr, 0, -1, -1, 0);
+ event_attr_init(&attr);
+
+ /*
+ * Unnamed union member, not supported as struct member named
+ * initializer in older compilers such as gcc 4.4.7
+ */
+ attr.sample_period = 1;
+
+ while (attr.precise_ip != 0) {
+ int fd = sys_perf_event_open(&attr, 0, -1, -1, 0);
if (fd != -1) {
close(fd);
break;
}
- --attr->precise_ip;
+ --attr.precise_ip;
}
+
+ pattr->precise_ip = attr.precise_ip;
}
int __perf_evlist__add_default(struct perf_evlist *evlist, bool precise)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index dfe2958e6287..3bbf73e979c0 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -294,20 +294,12 @@ struct perf_evsel *perf_evsel__new_cycles(bool precise)
if (!precise)
goto new_event;
- /*
- * Unnamed union member, not supported as struct member named
- * initializer in older compilers such as gcc 4.4.7
- *
- * Just for probing the precise_ip:
- */
- attr.sample_period = 1;
perf_event_attr__set_max_precise_ip(&attr);
/*
* Now let the usual logic to set up the perf_event_attr defaults
* to kick in when we return and before perf_evsel__open() is called.
*/
- attr.sample_period = 0;
new_event:
evsel = perf_evsel__new(&attr);
if (evsel == NULL)