Re: [PATCH bpf-next v6 21/23] samples/bpf: add new hid_mouse example

From: Benjamin Tissoires
Date: Wed Jul 13 2022 - 08:32:35 EST


On Wed, Jul 13, 2022 at 2:16 PM Dominique Martinet
<asmadeus@xxxxxxxxxxxxx> wrote:
>
> Benjamin Tissoires wrote on Tue, Jul 12, 2022 at 04:58:48PM +0200:
> > diff --git a/samples/bpf/hid_mouse.c b/samples/bpf/hid_mouse.c
> > new file mode 100644
> > index 000000000000..f6e5f09026eb
> > --- /dev/null
> > +++ b/samples/bpf/hid_mouse.c
> > @@ -0,0 +1,150 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/* Copyright (c) 2022 Benjamin Tissoires
> > + */
> > +
> > +/* not sure why but this doesn't get preoperly imported */
>
> typo: properly
>
> > +#define __must_check
>
> But more usefully, I don't think it should be needed -- we don't use
> __must_check at all in uapi includes; if this is needed that means some
> of the include here uses the kernel internal includes and that shouldn't
> be needed as they're not normally installed.

Indeed, I must have had the issue in the early days of development.
Removing the line still makes the program compile, so I'll remove it
in v7.

Thanks a lot!

Cheers,
Benjamin

>
> Didn't actually try to see but taking the compilation line that fails
> and running it with -E will probably show where that must_check comes
> from
>
> --
> Dominique Martinet | Asmadeus,
> just passing by
>