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Diffstat (limited to 'include/linux/ftrace.h')
-rw-r--r--include/linux/ftrace.h123
1 files changed, 92 insertions, 31 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index fdb2a89ae543..847bb3c48dd0 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -95,6 +95,13 @@ stack_trace_sysctl(struct ctl_table *table, int write,
loff_t *ppos);
#endif
+struct ftrace_func_command {
+ struct list_head list;
+ char *name;
+ int (*func)(char *func, char *cmd,
+ char *params, int enable);
+};
+
#ifdef CONFIG_DYNAMIC_FTRACE
/* asm/ftrace.h must be defined for archs supporting dynamic ftrace */
#include <asm/ftrace.h>
@@ -102,6 +109,30 @@ stack_trace_sysctl(struct ctl_table *table, int write,
int ftrace_arch_code_modify_prepare(void);
int ftrace_arch_code_modify_post_process(void);
+struct seq_file;
+
+struct ftrace_probe_ops {
+ void (*func)(unsigned long ip,
+ unsigned long parent_ip,
+ void **data);
+ int (*callback)(unsigned long ip, void **data);
+ void (*free)(void **data);
+ int (*print)(struct seq_file *m,
+ unsigned long ip,
+ struct ftrace_probe_ops *ops,
+ void *data);
+};
+
+extern int
+register_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
+ void *data);
+extern void
+unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
+ void *data);
+extern void
+unregister_ftrace_function_probe_func(char *glob, struct ftrace_probe_ops *ops);
+extern void unregister_ftrace_function_probe_all(char *glob);
+
enum {
FTRACE_FL_FREE = (1 << 0),
FTRACE_FL_FAILED = (1 << 1),
@@ -122,6 +153,9 @@ struct dyn_ftrace {
int ftrace_force_update(void);
void ftrace_set_filter(unsigned char *buf, int len, int reset);
+int register_ftrace_command(struct ftrace_func_command *cmd);
+int unregister_ftrace_command(struct ftrace_func_command *cmd);
+
/* defined in arch */
extern int ftrace_ip_converted(unsigned long ip);
extern int ftrace_dyn_arch_init(void *data);
@@ -129,6 +163,10 @@ extern int ftrace_update_ftrace_func(ftrace_func_t func);
extern void ftrace_caller(void);
extern void ftrace_call(void);
extern void mcount_call(void);
+
+#ifndef FTRACE_ADDR
+#define FTRACE_ADDR ((unsigned long)ftrace_caller)
+#endif
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
extern void ftrace_graph_caller(void);
extern int ftrace_enable_ftrace_graph_caller(void);
@@ -139,7 +177,7 @@ static inline int ftrace_disable_ftrace_graph_caller(void) { return 0; }
#endif
/**
- * ftrace_make_nop - convert code into top
+ * ftrace_make_nop - convert code into nop
* @mod: module structure if called by module load initialization
* @rec: the mcount call site record
* @addr: the address that the call site should be calling
@@ -201,6 +239,14 @@ extern void ftrace_enable_daemon(void);
# define ftrace_disable_daemon() do { } while (0)
# define ftrace_enable_daemon() do { } while (0)
static inline void ftrace_release(void *start, unsigned long size) { }
+static inline int register_ftrace_command(struct ftrace_func_command *cmd)
+{
+ return -EINVAL;
+}
+static inline int unregister_ftrace_command(char *cmd_name)
+{
+ return -EINVAL;
+}
#endif /* CONFIG_DYNAMIC_FTRACE */
/* totally disable ftrace - can not re-enable after this */
@@ -301,6 +347,9 @@ ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3);
extern int
__ftrace_printk(unsigned long ip, const char *fmt, ...)
__attribute__ ((format (printf, 2, 3)));
+# define ftrace_vprintk(fmt, ap) __ftrace_printk(_THIS_IP_, fmt, ap)
+extern int
+__ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap);
extern void ftrace_dump(void);
#else
static inline void
@@ -316,6 +365,11 @@ ftrace_printk(const char *fmt, ...)
{
return 0;
}
+static inline int
+ftrace_vprintk(const char *fmt, va_list ap)
+{
+ return 0;
+}
static inline void ftrace_dump(void) { }
#endif
@@ -330,36 +384,6 @@ ftrace_init_module(struct module *mod,
unsigned long *start, unsigned long *end) { }
#endif
-enum {
- POWER_NONE = 0,
- POWER_CSTATE = 1,
- POWER_PSTATE = 2,
-};
-
-struct power_trace {
-#ifdef CONFIG_POWER_TRACER
- ktime_t stamp;
- ktime_t end;
- int type;
- int state;
-#endif
-};
-
-#ifdef CONFIG_POWER_TRACER
-extern void trace_power_start(struct power_trace *it, unsigned int type,
- unsigned int state);
-extern void trace_power_mark(struct power_trace *it, unsigned int type,
- unsigned int state);
-extern void trace_power_end(struct power_trace *it);
-#else
-static inline void trace_power_start(struct power_trace *it, unsigned int type,
- unsigned int state) { }
-static inline void trace_power_mark(struct power_trace *it, unsigned int type,
- unsigned int state) { }
-static inline void trace_power_end(struct power_trace *it) { }
-#endif
-
-
/*
* Structure that defines an entry function trace.
*/
@@ -383,6 +407,30 @@ struct ftrace_graph_ret {
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
/*
+ * Stack of return addresses for functions
+ * of a thread.
+ * Used in struct thread_info
+ */
+struct ftrace_ret_stack {
+ unsigned long ret;
+ unsigned long func;
+ unsigned long long calltime;
+};
+
+/*
+ * Primary handler of a function return.
+ * It relays on ftrace_return_to_handler.
+ * Defined in entry_32/64.S
+ */
+extern void return_to_handler(void);
+
+extern int
+ftrace_push_return_trace(unsigned long ret, unsigned long long time,
+ unsigned long func, int *depth);
+extern void
+ftrace_pop_return_trace(struct ftrace_graph_ret *trace, unsigned long *ret);
+
+/*
* Sometimes we don't want to trace a function with the function
* graph tracer but we want them to keep traced by the usual function
* tracer if the function graph tracer is not configured.
@@ -495,4 +543,17 @@ static inline int test_tsk_trace_graph(struct task_struct *tsk)
#endif /* CONFIG_TRACING */
+
+#ifdef CONFIG_HW_BRANCH_TRACER
+
+void trace_hw_branch(u64 from, u64 to);
+void trace_hw_branch_oops(void);
+
+#else /* CONFIG_HW_BRANCH_TRACER */
+
+static inline void trace_hw_branch(u64 from, u64 to) {}
+static inline void trace_hw_branch_oops(void) {}
+
+#endif /* CONFIG_HW_BRANCH_TRACER */
+
#endif /* _LINUX_FTRACE_H */