Re: linux-next: build warning after merge of the rcu tree

From: Paul E. McKenney
Date: Mon Dec 07 2020 - 13:54:30 EST


On Mon, Dec 07, 2020 at 10:48:51AM -0700, Jonathan Corbet wrote:
> On Mon, 7 Dec 2020 08:47:04 -0800
> "Paul E. McKenney" <paulmck@xxxxxxxxxx> wrote:
>
> > I freely confess that I have absolutely no idea what it doesn't like.
> > It is complaining about this header comment, correct?
> >
> > /**
> > * kmem_last_alloc_stack - Get return address and stack for last allocation
> > * @object: object for which to find last-allocation return address.
> > * @stackp: %NULL or pointer to location to place return-address stack.
> > * @nstackp: maximum number of return addresses that may be stored.
> > *
> > * If the pointer references a slab-allocated object and if sufficient
> > * debugging is enabled, return the return address for the corresponding
> > * allocation. If stackp is non-%NULL in %CONFIG_STACKTRACE kernels running
> > * the slub allocator, also copy the return-address stack into @stackp,
> > * limited by @nstackp. Otherwise, return %NULL or an appropriate error
> > * code using %ERR_PTR().
> > *
> > * Return: return address from last allocation, %NULL or negative error code.
> > */
>
> The problem is the %ERR_PTR(). I'm honestly not quite sure why, Sphinx is
> being a little weird there. But in any case the % notation is supposed to
> mark a constant, which is not the case here. I'd just take the % signs
> out.

Thank you, will do!

Thanx, Paul