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-rw-r--r--kernel/trace/trace.h30
1 files changed, 27 insertions, 3 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 39fd77330aab..6ade1c55cc3a 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -263,7 +263,10 @@ struct trace_array {
struct ftrace_ops *ops;
struct trace_pid_list __rcu *function_pids;
#ifdef CONFIG_DYNAMIC_FTRACE
+ /* All of these are protected by the ftrace_lock */
struct list_head func_probes;
+ struct list_head mod_trace;
+ struct list_head mod_notrace;
#endif
/* function tracing enabled */
int function_enabled;
@@ -637,6 +640,9 @@ void set_graph_array(struct trace_array *tr);
void tracing_start_cmdline_record(void);
void tracing_stop_cmdline_record(void);
+void tracing_start_tgid_record(void);
+void tracing_stop_tgid_record(void);
+
int register_tracer(struct tracer *type);
int is_tracing_stopped(void);
@@ -697,6 +703,7 @@ static inline void __trace_stack(struct trace_array *tr, unsigned long flags,
extern u64 ftrace_now(int cpu);
extern void trace_find_cmdline(int pid, char comm[]);
+extern int trace_find_tgid(int pid);
extern void trace_event_follow_fork(struct trace_array *tr, bool enable);
#ifdef CONFIG_DYNAMIC_FTRACE
@@ -761,10 +768,24 @@ enum print_line_t print_trace_line(struct trace_iterator *iter);
extern char trace_find_mark(unsigned long long duration);
+struct ftrace_hash;
+
+struct ftrace_mod_load {
+ struct list_head list;
+ char *func;
+ char *module;
+ int enable;
+};
+
+enum {
+ FTRACE_HASH_FL_MOD = (1 << 0),
+};
+
struct ftrace_hash {
unsigned long size_bits;
struct hlist_head *buckets;
unsigned long count;
+ unsigned long flags;
struct rcu_head rcu;
};
@@ -773,7 +794,7 @@ ftrace_lookup_ip(struct ftrace_hash *hash, unsigned long ip);
static __always_inline bool ftrace_hash_empty(struct ftrace_hash *hash)
{
- return !hash || !hash->count;
+ return !hash || !(hash->count || (hash->flags & FTRACE_HASH_FL_MOD));
}
/* Standard output formatting function used for function return traces */
@@ -1107,6 +1128,7 @@ extern int trace_get_user(struct trace_parser *parser, const char __user *ubuf,
C(CONTEXT_INFO, "context-info"), /* Print pid/cpu/time */ \
C(LATENCY_FMT, "latency-format"), \
C(RECORD_CMD, "record-cmd"), \
+ C(RECORD_TGID, "record-tgid"), \
C(OVERWRITE, "overwrite"), \
C(STOP_ON_FREE, "disable_on_free"), \
C(IRQ_INFO, "irq-info"), \
@@ -1423,6 +1445,8 @@ struct ftrace_event_field *
trace_find_event_field(struct trace_event_call *call, char *name);
extern void trace_event_enable_cmd_record(bool enable);
+extern void trace_event_enable_tgid_record(bool enable);
+
extern int event_trace_add_tracer(struct dentry *parent, struct trace_array *tr);
extern int event_trace_del_tracer(struct trace_array *tr);
@@ -1773,10 +1797,10 @@ static inline const char *get_syscall_name(int syscall)
#ifdef CONFIG_EVENT_TRACING
void trace_event_init(void);
-void trace_event_enum_update(struct trace_enum_map **map, int len);
+void trace_event_eval_update(struct trace_eval_map **map, int len);
#else
static inline void __init trace_event_init(void) { }
-static inline void trace_event_enum_update(struct trace_enum_map **map, int len) { }
+static inline void trace_event_eval_update(struct trace_eval_map **map, int len) { }
#endif
extern struct trace_iterator *tracepoint_print_iter;