• Jim Cromie's avatar
    dynamic_debug: init with early_initcall, not arch_initcall · 3ec5652a
    Jim Cromie authored
    1- Call dynamic_debug_init() from early_initcall, not arch_initcall.
    2- Call dynamic_debug_init_debugfs() from fs_initcall, not module_init.
    
    RFC: This works for me on a 64 bit desktop and a i586 SBC, but is
    untested on other arches.  I presume there is or was a reason
    original code used arch_initcall, maybe the constraints have changed.
    
    This makes facility available as soon as possible.
    
    2nd change has a downside when dynamic_debug.verbose=1; all the
    vpr_info()s called in the proc-fs code are activated, causing
    voluminous output from dmesg.  TBD: Im unsure of this explanation, but
    the output is there.  This could be fixed by changing those callsites
    to v2pr_info(if verbose > 1).
    
    1st change is still not early enough to enable pr_debugs in
    kernel/params, so parsing of boot-args isnt logged.  The reparse of
    those args is however visible after params.dyndbg="+p" is processed.
    Signed-off-by: default avatarJim Cromie <jim.cromie@gmail.com>
    Acked-by: default avatarJason Baron <jbaron@redhat.com>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    3ec5652a
dynamic_debug.c 24.9 KB