On Thu, 25 Aug 2011 17:00:01 -0700
Joe Perches [off-list ref] wrote:

On Thu, 2011-08-25 at 16:50 -0700, Andrew Morton wrote:

quoted

On Thu, 25 Aug 2011 13:26:19 -0700
Joe Perches [off-list ref] wrote:

quoted

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.

[]

quoted

quoted

-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

So?

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