Re: [PATCH] mm: Neaten warn_alloc_failed

[Joe Perches]

On Thu, 2011-08-25 at 16:50 -0700, Andrew Morton wrote:
> On Thu, 25 Aug 2011 13:26:19 -0700
> Joe Perches <joe@xxxxxxxxxxx> wrote:
> > Add __attribute__((format (printf...) to the function
> > to validate format and arguments.  Use vsprintf extension
> > %pV to avoid any possible message interleaving. Coalesce
> > format string.  Convert printks/pr_warning to pr_warn.
[]
> > -extern void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...);
> > +extern __attribute__((format (printf, 3, 4)))
> > +void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...);
> > diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> looky:

Looky what?

There are _far_ more uses of __attribute__((format...)
than __printf(...)

I generally go with what's more commonly used,
especially when it's 206 to 8, and 1 of the
8 is the #define itself.

$ grep -rP --include=*.[ch] "__attribute__.*format" * | wc -l
206
$ grep -rP --include=*.[ch]  -w "__printf" * | wc -l
8


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