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-rw-r--r--kernel/trace/trace.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 7bc56762ca35..37824d98ae71 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4123,6 +4123,30 @@ static const char readme_msg[] =
"\t\t\t traces\n"
#endif
#endif /* CONFIG_STACK_TRACER */
+#ifdef CONFIG_KPROBE_EVENT
+ " kprobe_events\t\t- Add/remove/show the kernel dynamic events\n"
+ "\t\t\t Write into this file to define/undefine new trace events.\n"
+#endif
+#ifdef CONFIG_UPROBE_EVENT
+ " uprobe_events\t\t- Add/remove/show the userspace dynamic events\n"
+ "\t\t\t Write into this file to define/undefine new trace events.\n"
+#endif
+#if defined(CONFIG_KPROBE_EVENT) || defined(CONFIG_UPROBE_EVENT)
+ "\t accepts: event-definitions (one definition per line)\n"
+ "\t Format: p|r[:[<group>/]<event>] <place> [<args>]\n"
+ "\t -:[<group>/]<event>\n"
+#ifdef CONFIG_KPROBE_EVENT
+ "\t place: [<module>:]<symbol>[+<offset>]|<memaddr>\n"
+#endif
+#ifdef CONFIG_UPROBE_EVENT
+ "\t place: <path>:<offset>\n"
+#endif
+ "\t args: <name>=fetcharg[:type]\n"
+ "\t fetcharg: %<register>, @<address>, @<symbol>[+|-<offset>],\n"
+ "\t $stack<index>, $stack, $retval, $comm\n"
+ "\t type: s8/16/32/64, u8/16/32/64, x8/16/32/64, string,\n"
+ "\t b<bit-width>@<bit-offset>/<container-size>\n"
+#endif
" events/\t\t- Directory containing all trace event subsystems:\n"
" enable\t\t- Write 0/1 to enable/disable tracing of all events\n"
" events/<system>/\t- Directory containing all trace events for <system>:\n"