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tracing: Remove unused function ftrace_off_permanent()

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In the past, ftrace_off_permanent() was called if something
strange was detected. But the ftrace_bug() now handles all the
anomolies that can happen with ftrace (function tracing), and there
are no uses of ftrace_off_permanent(). Get rid of it.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2013-11-06 12:19:37 -05:00 • committed by Steven Rostedt
parent d6d3523caa
commit 042b10d83d
2 changed files with 0 additions and 17 deletions
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2
include/linux/kernel.h
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@ -501,7 +501,6 @@ void tracing_snapshot_alloc(void);
extern void tracing_start(void); extern void tracing_start(void);
extern void tracing_stop(void); extern void tracing_stop(void);
extern void ftrace_off_permanent(void);
static inline __printf(1, 2) static inline __printf(1, 2)
void ____trace_printk_check_format(const char *fmt, ...) void ____trace_printk_check_format(const char *fmt, ...)
@ -639,7 +638,6 @@ extern void ftrace_dump(enum ftrace_dump_mode oops_dump_mode);
#else #else
static inline void tracing_start(void) { } static inline void tracing_start(void) { }
static inline void tracing_stop(void) { } static inline void tracing_stop(void) { }
static inline void ftrace_off_permanent(void) { }
static inline void trace_dump_stack(int skip) { } static inline void trace_dump_stack(int skip) { }
static inline void tracing_on(void) { } static inline void tracing_on(void) { }

15
kernel/trace/trace.c
View file

@ -1283,21 +1283,6 @@ int is_tracing_stopped(void)
return global_trace.stop_count; return global_trace.stop_count;
} }
/**
* ftrace_off_permanent - disable all ftrace code permanently
*
* This should only be called when a serious anomally has
* been detected. This will turn off the function tracing,
* ring buffers, and other tracing utilites. It takes no
* locks and can be called from any context.
*/
void ftrace_off_permanent(void)
{
tracing_disabled = 1;
ftrace_stop();
tracing_off_permanent();
}
/** /**
* tracing_start - quick start of the tracer * tracing_start - quick start of the tracer
* *