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linux-2.6
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tracing/function-return-tracer: clean up task start/exit callbacks 

Impact: cleanup

Eliminate #ifdefs in core code by using empty inline functions.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-11-23 09:18:56 +01:00
parent f201ae2356
commit 82f60f0bc8
4 changed files with 3 additions and 6 deletions
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3
include/linux/ftrace.h
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@ -335,6 +335,9 @@ extern void unregister_ftrace_return(void);
extern void ftrace_retfunc_init_task(struct task_struct *t);
extern void ftrace_retfunc_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) { }
#endif
#endif /* _LINUX_FTRACE_H */

2
kernel/exit.c
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@ -1128,9 +1128,7 @@ NORET_TYPE void do_exit(long code)
preempt_disable();
/* causes final put_task_struct in finish_task_switch(). */
tsk->state = TASK_DEAD;
#ifdef CONFIG_FUNCTION_RET_TRACER
ftrace_retfunc_exit_task(tsk);
#endif
schedule();
BUG();
/* Avoid "noreturn function does return". */

2
kernel/fork.c
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@ -1270,9 +1270,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
total_forks++;
spin_unlock(&current->sighand->siglock);
write_unlock_irq(&tasklist_lock);
#ifdef CONFIG_FUNCTION_RET_TRACER
ftrace_retfunc_init_task(p);
#endif
proc_fork_connector(p);
cgroup_post_fork(p);
return p;

2
kernel/sched.c
View File

@ -5901,9 +5901,7 @@ void __cpuinit init_idle(struct task_struct *idle, int cpu)
* The idle tasks have their own, simple scheduling class:
*/
idle->sched_class = &idle_sched_class;
#ifdef CONFIG_FUNCTION_RET_TRACER
ftrace_retfunc_init_task(idle);
#endif
}
/*