Re: [PATCH RFC bpf-next v3 09/16] HID: bpf/dispatch: regroup kfuncs definitions

[Benjamin Tissoires <bentiss@kernel.org>]

On Feb 22 2024, Eduard Zingerman wrote:
> On Wed, 2024-02-21 at 17:25 +0100, Benjamin Tissoires wrote:
> 
> [...]
> 
> > diff --git a/drivers/hid/bpf/hid_bpf_dispatch.c b/drivers/hid/bpf/hid_bpf_dispatch.c
> > index e630caf644e8..52abb27426f4 100644
> > --- a/drivers/hid/bpf/hid_bpf_dispatch.c
> > +++ b/drivers/hid/bpf/hid_bpf_dispatch.c
> > @@ -143,48 +143,6 @@ u8 *call_hid_bpf_rdesc_fixup(struct hid_device *hdev, u8 *rdesc, unsigned int *s
> >  }
> >  EXPORT_SYMBOL_GPL(call_hid_bpf_rdesc_fixup);
> >  
> > -/* Disables missing prototype warnings */
> > -__bpf_kfunc_start_defs();
> 
> Note:
> this patch does not apply on top of current bpf-next [0] because
> __bpf_kfunc_start_defs and __bpf_kfunc are not present in [0].
> 
> [0] commit 58fd62e0aa50 ("bpf: Clarify batch lookup/lookup_and_delete semantics")

Right... this was in Linus' tree as a late 6.8-rcx addition. Depending
on how bpf-next will be rebased/merged, I'll see if I merge this
subseries through the HID tree or the BPF one.

Cheers,
Benjamin

> 
> > -
> > -/**
> > - * hid_bpf_get_data - Get the kernel memory pointer associated with the context @ctx
> > - *
> > - * @ctx: The HID-BPF context
> > - * @offset: The offset within the memory
> > - * @rdwr_buf_size: the const size of the buffer
> > - *
> > - * @returns %NULL on error, an %__u8 memory pointer on success
> > - */
> > -__bpf_kfunc __u8 *
> > -hid_bpf_get_data(struct hid_bpf_ctx *ctx, unsigned int offset, const size_t rdwr_buf_size)
> > -{
> > -	struct hid_bpf_ctx_kern *ctx_kern;
> > -
> > -	if (!ctx)
> > -		return NULL;
> 
> [...]