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tracing/function-return-tracer: change the name into function-graph-tracer

Browse source 
Impact: cleanup

This patch changes the name of the "return function tracer" into
function-graph-tracer which is a more suitable name for a tracing
which makes one able to retrieve the ordered call stack during
the code flow.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frederic Weisbecker 2008-11-25 21:07:04 +01:00 • committed by Ingo Molnar
commit fb52607afc
17 changed files with 173 additions and 72 deletions
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24
include/linux/ftrace.h
View file

@ -115,8 +115,8 @@ 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);
#ifdef CONFIG_FUNCTION_RET_TRACER
extern void ftrace_return_caller(void);
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
extern void ftrace_graph_caller(void);
#endif
/**
@ -315,7 +315,7 @@ ftrace_init_module(struct module *mod,
/*
* Structure that defines a return function trace.
*/
struct ftrace_retfunc {
struct ftrace_graph_ret {
unsigned long ret; /* Return address */
unsigned long func; /* Current function */
unsigned long long calltime;
@ -324,22 +324,22 @@ struct ftrace_retfunc {
unsigned long overrun;
};
#ifdef CONFIG_FUNCTION_RET_TRACER
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
#define FTRACE_RETFUNC_DEPTH 50
#define FTRACE_RETSTACK_ALLOC_SIZE 32
/* Type of a callback handler of tracing return function */
typedef void (*trace_function_return_t)(struct ftrace_retfunc *);
typedef void (*trace_function_graph_t)(struct ftrace_graph_ret *);
extern int register_ftrace_return(trace_function_return_t func);
extern int register_ftrace_graph(trace_function_graph_t func);
/* The current handler in use */
extern trace_function_return_t ftrace_function_return;
extern void unregister_ftrace_return(void);
extern trace_function_graph_t ftrace_graph_function;
extern void unregister_ftrace_graph(void);
extern void ftrace_retfunc_init_task(struct task_struct *t);
extern void ftrace_retfunc_exit_task(struct task_struct *t);
extern void ftrace_graph_init_task(struct task_struct *t);
extern void ftrace_graph_exit_task(struct task_struct *t);
#else
static inline void ftrace_retfunc_init_task(struct task_struct *t) { }
static inline void ftrace_retfunc_exit_task(struct task_struct *t) { }
static inline void ftrace_graph_init_task(struct task_struct *t) { }
static inline void ftrace_graph_exit_task(struct task_struct *t) { }
#endif
#endif /* _LINUX_FTRACE_H */

2
include/linux/ftrace_irq.h
View file

@ -2,7 +2,7 @@
#define _LINUX_FTRACE_IRQ_H
#if defined(CONFIG_DYNAMIC_FTRACE) || defined(CONFIG_FUNCTION_RET_TRACER)
#if defined(CONFIG_DYNAMIC_FTRACE) || defined(CONFIG_FUNCTION_GRAPH_TRACER)
extern void ftrace_nmi_enter(void);
extern void ftrace_nmi_exit(void);
#else

2
include/linux/sched.h
View file

@ -1365,7 +1365,7 @@ struct task_struct {
unsigned long default_timer_slack_ns;
struct list_head *scm_work_list;
#ifdef CONFIG_FUNCTION_RET_TRACER
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
/* Index of current stored adress in ret_stack */
int curr_ret_stack;
/* Stack of return addresses for return function tracing */