1 files changed, 18 insertions, 14 deletions

diff --git a/tools/lib/api/fs/tracing_path.c b/tools/lib/api/fs/tracing_path.c
index 251b7c342a87..3e606b9c443e 100644
--- a/tools/lib/api/fs/tracing_path.c
+++ b/tools/lib/api/fs/tracing_path.c
@@ -86,9 +86,13 @@ void put_tracing_file(char *file)
         free(file);
 }
 
-static int strerror_open(int err, char *buf, size_t size, const char *filename)
+int tracing_path__strerror_open_tp(int err, char *buf, size_t size,
+                                   const char *sys, const char *name)
 {
         char sbuf[128];
+        char filename[PATH_MAX];
+
+        snprintf(filename, PATH_MAX, "%s/%s", sys, name ?: "*");
 
         switch (err) {
         case ENOENT:
@@ -99,10 +103,19 @@ static int strerror_open(int err, char *buf, size_t size, const char *filename)
                  * - jirka
                  */
                 if (debugfs__configured() || tracefs__configured()) {
-                        snprintf(buf, size,
-                                 "Error:\tFile %s/%s not found.\n"
-                                 "Hint:\tPerhaps this kernel misses some CONFIG_ setting to enable this feature?.\n",
-                                 tracing_events_path, filename);
+                        /* sdt markers */
+                        if (!strncmp(filename, "sdt_", 4)) {
+                                snprintf(buf, size,
+                                        "Error:\tFile %s/%s not found.\n"
+                                        "Hint:\tSDT event cannot be directly recorded on.\n"
+                                        "\tPlease first use 'perf probe %s:%s' before recording it.\n",
+                                        tracing_events_path, filename, sys, name);
+                        } else {
+                                snprintf(buf, size,
+                                         "Error:\tFile %s/%s not found.\n"
+                                         "Hint:\tPerhaps this kernel misses some CONFIG_ setting to enable this feature?.\n",
+                                         tracing_events_path, filename);
+                        }
                         break;
                 }
                 snprintf(buf, size, "%s",
@@ -125,12 +138,3 @@ static int strerror_open(int err, char *buf, size_t size, const char *filename)
 
         return 0;
 }
-
-int tracing_path__strerror_open_tp(int err, char *buf, size_t size, const char *sys, const char *name)
-{
-        char path[PATH_MAX];
-
-        snprintf(path, PATH_MAX, "%s/%s", sys, name ?: "*");
-
-        return strerror_open(err, buf, size, path);
-}