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ftrace: Have function tracing start in early boot up

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Register the function tracer right after the tracing buffers are initialized
in early boot up. This will allow function tracing to begin early if it is
enabled via the kernel command line.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (VMware) 2017-03-03 13:48:42 -05:00
parent 9afecfbb95
commit dbeafd0d61
3 changed files with 6 additions and 2 deletions
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3
kernel/trace/trace_functions.c
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@ -687,9 +687,8 @@ static inline int init_func_cmd_traceon(void)
}
#endif /* CONFIG_DYNAMIC_FTRACE */
static __init int init_function_trace(void)
__init int init_function_trace(void)
{
init_func_cmd_traceon();
return register_tracer(&function_trace);
}
core_initcall(init_function_trace);