tools lib api: Unexport 'tracing_path' variable

One should use tracing_path_mount() instead, so more things get done
lazily instead of at every 'perf' tool call startup.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-fci4yll35idd9yuslp67vqc2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2 files changed, 2 insertions, 3 deletions

diff --git a/tools/lib/api/fs/tracing_path.c b/tools/lib/api/fs/tracing_path.c
index 4f8ec7d476b8..6f5fe942eff4 100644
--- a/tools/lib/api/fs/tracing_path.c
+++ b/tools/lib/api/fs/tracing_path.c
@@ -14,7 +14,7 @@
 #include "tracing_path.h"
 
 static char tracing_mnt[PATH_MAX]  = "/sys/kernel/debug";
-char tracing_path[PATH_MAX]        = "/sys/kernel/debug/tracing";
+static char tracing_path[PATH_MAX]        = "/sys/kernel/debug/tracing";
 char tracing_events_path[PATH_MAX] = "/sys/kernel/debug/tracing/events";
 
 
@@ -75,7 +75,7 @@ char *get_tracing_file(const char *name)
 {
         char *file;
 
-        if (asprintf(&file, "%s/%s", tracing_path, name) < 0)
+        if (asprintf(&file, "%s/%s", tracing_path_mount(), name) < 0)
                 return NULL;
 
         return file;
diff --git a/tools/lib/api/fs/tracing_path.h b/tools/lib/api/fs/tracing_path.h
index 0066f06cc381..1b65decedfc0 100644
--- a/tools/lib/api/fs/tracing_path.h
+++ b/tools/lib/api/fs/tracing_path.h
@@ -4,7 +4,6 @@
 
 #include <linux/types.h>
 
-extern char tracing_path[];
 extern char tracing_events_path[];
 
 void tracing_path_set(const char *mountpoint);