On Wed, Feb 08, 2017 at 01:20:26PM -0800, Kees Cook wrote:
> Ooooh, that is intense. And the trampolines (EX_REG_HANDLERs) are all
> just there to catch whatever register gcc decides to stuff the value
> into? *cover face* Sure, okay. :)
Right, they shouldn't be big functions, but barring whole program LTO
there's just no knowing which are unused.
> I wonder how many existing WARN callsites could be repurposed to use this?
At the very least all WARN/BUG instances with trivial @format argument
that are inlined I think. For example, things like:
static inline some_function()
{
/* ... */
WARN(cond, "blah blah blah\n");
/* ... */
}
where the format has no arguments. Here we can out-of-line the printk()
stuff, which, as is the purpose here, shrinks the size of the inline.
