• Frederic Weisbecker's avatar
    ftrace: perform an initialization for ftrace to enable it · 0b6e4d56
    Frederic Weisbecker authored
    Impact: corrects a bug which made the non-dyn function tracer not functional
    
    With latest git, the non-dynamic function tracer didn't get any trace.
    
    The problem was the fact that ftrace_enabled wasn't initialized to 1
    because ftrace hasn't any init function when DYNAMIC_FTRACE is disabled.
    
    So when a tracer tries to register an ftrace_ops struct,
    __register_ftrace_function failed to set the hook.
    
    This patch corrects it by setting an init function to initialize
    ftrace during the boot.
    Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    0b6e4d56
ftrace.c 30.6 KB