Re: [PATCH] rtlwifi: Create _rtl_dbg_trace function to reduce RT_TRACE code size

[Joe Perches]

On Mon, 2016-06-27 at 19:53 -0500, Larry Finger wrote:
> On 06/25/2016 05:46 PM, Joe Perches wrote:
> > 
> > This debugging macro can expand to a lot of code.
> > Make it a function to reduce code size.
> > 
> > (x86-64 defconfig w/ all rtlwifi drivers and allyesconfig)
> > $ size drivers/net/wireless/realtek/rtlwifi/built-in.o*
> >     text       data     bss     dec     hex filename
> >   900083     200499    1907 1102489  10d299 
> > drivers/net/wireless/realtek/rtlwifi/built-in.o.defconfig.new
> > 1113597      200499    1907 1316003  1414a3 
> > drivers/net/wireless/realtek/rtlwifi/built-in.o.defconfig.old
> > 1746879      453503    8512 2208894  21b47e 
> > drivers/net/wireless/realtek/rtlwifi/built-in.o.new
> > 2051965      503311    8512 2563788  271ecc 
> > drivers/net/wireless/realtek/rtlwifi/built-in.o.old
> > 
> > Signed-off-by: Joe Perches <j...@perches.com>
> I acked this before; however there is a bug that breaks the build if 
> CONFIG_RTLWIFI_DEBUG is not defined. The rest of the code calls 
> _rtl_dbg_trace(), but that symbol is never defined. The problem can be fixed 
> in 
> debug.c or debug.h.

Confused a bit.  What breaks again?

debug.h:

#ifdef CONFIG_RTLWIFI_DEBUG
[]
__printf(5, 6)
void _rtl_dbg_trace(struct rtl_priv *rtlpriv, int comp, int level,
                    const char *modname, const char *fmt, ...);

#define RT_TRACE(rtlpriv, comp, level, fmt, ...)                        \
        _rtl_dbg_trace(rtlpriv, comp, level,                            \
                       KBUILD_MODNAME, fmt, ##__VA_ARGS__)
[]
#else
[]
__printf(4, 5)
static inline void RT_TRACE(struct rtl_priv *rtlpriv,
                            int comp, int level,
                            const char *fmt, ...)
{
}
[]
#endif