1 files changed, 23 insertions, 0 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 6e735d4771f..7d5cc37b8fc 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -15,6 +15,10 @@
 #include <linux/trace_seq.h>
 #include <linux/ftrace_event.h>
 
+#ifdef CONFIG_KSYM_TRACER
+#include <asm/hw_breakpoint.h>
+#endif
+
 enum trace_type {
         __TRACE_FIRST_TYPE = 0,
 
@@ -40,6 +44,7 @@ enum trace_type {
         TRACE_KMEM_FREE,
         TRACE_POWER,
         TRACE_BLK,
+        TRACE_KSYM,
 
         __TRACE_LAST_TYPE,
 };
@@ -207,6 +212,21 @@ struct syscall_trace_exit {
         unsigned long           ret;
 };
 
+#define KSYM_SELFTEST_ENTRY "ksym_selftest_dummy"
+extern int process_new_ksym_entry(char *ksymname, int op, unsigned long addr);
+
+struct trace_ksym {
+        struct trace_entry      ent;
+        struct hw_breakpoint    *ksym_hbp;
+        unsigned long           ksym_addr;
+        unsigned long           ip;
+#ifdef CONFIG_PROFILE_KSYM_TRACER
+        unsigned long           counter;
+#endif
+        struct hlist_node       ksym_hlist;
+        char                    ksym_name[KSYM_NAME_LEN];
+        char                    p_name[TASK_COMM_LEN];
+};
 
 /*
  * trace_flag_type is an enumeration that holds different
@@ -323,6 +343,7 @@ extern void __ftrace_bad_type(void);
                           TRACE_SYSCALL_ENTER);                         \
                 IF_ASSIGN(var, ent, struct syscall_trace_exit,          \
                           TRACE_SYSCALL_EXIT);                          \
+                IF_ASSIGN(var, ent, struct trace_ksym, TRACE_KSYM);     \
                 __ftrace_bad_type();                                    \
         } while (0)
 
@@ -540,6 +561,8 @@ extern int trace_selftest_startup_branch(struct tracer *trace,
                                          struct trace_array *tr);
 extern int trace_selftest_startup_hw_branches(struct tracer *trace,
                                               struct trace_array *tr);
+extern int trace_selftest_startup_ksym(struct tracer *trace,
+                                         struct trace_array *tr);
 #endif /* CONFIG_FTRACE_STARTUP_TEST */
 
 extern void *head_page(struct trace_array_cpu *data);