Commit 3008119a authored by Gaosheng Cui's avatar Gaosheng Cui Committed by Steven Rostedt (Google)
Browse files

ftrace: Remove obsoleted code from ftrace and task_struct 

The trace of "struct task_struct" was no longer used since
commit 345ddcc8 ("ftrace: Have set_ftrace_pid use the
bitmap like events do"), and the functions about flags for
current->trace is useless, so remove them.

Link: https://lkml.kernel.org/r/20220923090012.505990-1-cuigaosheng1@huawei.com



Signed-off-by: default avatarGaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent c0a581d7

include/linux/ftrace.h

+0 −41
Original line number Diff line number Diff line
@@ -1122,47 +1122,6 @@ static inline void unpause_graph_tracing(void) { } 
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */



#ifdef CONFIG_TRACING



/* flags for current->trace */

enum {

	TSK_TRACE_FL_TRACE_BIT	= 0,

	TSK_TRACE_FL_GRAPH_BIT	= 1,

};

enum {

	TSK_TRACE_FL_TRACE	= 1 << TSK_TRACE_FL_TRACE_BIT,

	TSK_TRACE_FL_GRAPH	= 1 << TSK_TRACE_FL_GRAPH_BIT,

};



static inline void set_tsk_trace_trace(struct task_struct *tsk)

{

	set_bit(TSK_TRACE_FL_TRACE_BIT, &tsk->trace);

}



static inline void clear_tsk_trace_trace(struct task_struct *tsk)

{

	clear_bit(TSK_TRACE_FL_TRACE_BIT, &tsk->trace);

}



static inline int test_tsk_trace_trace(struct task_struct *tsk)

{

	return tsk->trace & TSK_TRACE_FL_TRACE;

}



static inline void set_tsk_trace_graph(struct task_struct *tsk)

{

	set_bit(TSK_TRACE_FL_GRAPH_BIT, &tsk->trace);

}



static inline void clear_tsk_trace_graph(struct task_struct *tsk)

{

	clear_bit(TSK_TRACE_FL_GRAPH_BIT, &tsk->trace);

}



static inline int test_tsk_trace_graph(struct task_struct *tsk)

{

	return tsk->trace & TSK_TRACE_FL_GRAPH;

}



enum ftrace_dump_mode;



extern enum ftrace_dump_mode ftrace_dump_on_oops;

include/linux/sched.h

+0 −3
Original line number Diff line number Diff line
@@ -1381,9 +1381,6 @@ struct task_struct { 
#endif



#ifdef CONFIG_TRACING

	/* State flags for use by tracers: */

	unsigned long			trace;



	/* Bitmask and counter of trace recursion: */

	unsigned long			trace_recursion;

#endif /* CONFIG_TRACING */