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-rw-r--r--tools/perf/util/util.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 805d1f52c5b4..59d868add275 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -17,6 +17,8 @@ bool test_attr__enabled;
bool perf_host = true;
bool perf_guest = false;
+char tracing_events_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing/events";
+
void event_attr_init(struct perf_event_attr *attr)
{
if (!perf_host)
@@ -242,3 +244,28 @@ void get_term_dimensions(struct winsize *ws)
ws->ws_row = 25;
ws->ws_col = 80;
}
+
+static void set_tracing_events_path(const char *mountpoint)
+{
+ snprintf(tracing_events_path, sizeof(tracing_events_path), "%s/%s",
+ mountpoint, "tracing/events");
+}
+
+const char *perf_debugfs_mount(const char *mountpoint)
+{
+ const char *mnt;
+
+ mnt = debugfs_mount(mountpoint);
+ if (!mnt)
+ return NULL;
+
+ set_tracing_events_path(mnt);
+
+ return mnt;
+}
+
+void perf_debugfs_set_path(const char *mntpt)
+{
+ snprintf(debugfs_mountpoint, strlen(debugfs_mountpoint), "%s", mntpt);
+ set_tracing_events_path(mntpt);
+}