• Li Zefan's avatar
    tracing/events: Move TRACE_SYSTEM outside of include guard · d0b6e04a
    Li Zefan authored
    If TRACE_INCLDUE_FILE is defined, <trace/events/TRACE_INCLUDE_FILE.h>
    will be included and compiled, otherwise it will be
    <trace/events/TRACE_SYSTEM.h>
    
    So TRACE_SYSTEM should be defined outside of #if proctection,
    just like TRACE_INCLUDE_FILE.
    
    Imaging this scenario:
    
     #include <trace/events/foo.h>
        -> TRACE_SYSTEM == foo
     ...
     #include <trace/events/bar.h>
        -> TRACE_SYSTEM == bar
     ...
     #define CREATE_TRACE_POINTS
     #include <trace/events/foo.h>
        -> TRACE_SYSTEM == bar !!!
    
    and then bar.h will be included and compiled.
    Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
    Cc: Steven Rostedt <rostedt@goodmis.org>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    LKML-Reference: <4A5A9CF1.2010007@cn.fujitsu.com>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    d0b6e04a
ext4.h 17.2 KB