On Wed, 2008-02-20 at 08:36 -0800, Joe Perches wrote:
> On Wed, 2008-02-20 at 16:35 +0100, Patrick McHardy wrote:
> > Alternatively change the dprintk macro to behave similar like
> > pr_debug() and mark things like svc_print_addr() __pure, which
> > has the advantage that is still performs format checking even
> > if debugging is disabled.
> 
> I think it's better to change the dprintk style macros
> to what Philip Craig suggested.
> 
> http://marc.info/?l=linux-wireless&m=120338413108120&w=2
> 
> This makes clear to the compiler that the called function is not
> going to be used so it can be optimized away, keeps any argument
> verification in place, and doesn't require __pure attributes on
> arbitrary functions that may be called during the dprintk
> 
> #ifdef DEBUG
> #define some_print_wrapper(fmt, arg...) \
>         do { if (0) printk(KERN_DEBUG fmt, ##arg); } while (0)
> #else
> #define some_print_wrapper(fmt, arg...) \
>       printk(KERN_DEBUG fmt, ##arg)
> #endif

Have you actually read include/linux/sunrpc/debug.h?

Trond

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