Re: [PATCH] bluetooth.h: __ variants of u8 and friends are not neccessary inside kernel

From: Pavel Machek
Date: Wed Oct 05 2016 - 18:13:34 EST


On Wed 2016-10-05 12:15:34, Joe Perches wrote:
> On Wed, 2016-10-05 at 21:11 +0200, Pavel Machek wrote:
> > On Wed 2016-10-05 10:53:16, Joe Perches wrote:
> > > On Wed, 2016-10-05 at 13:14 +0200, Marcel Holtmann wrote:
> > > > Hi Pavel,
> > > >
> > > > > bluetooth.h is not part of user API, so __ variants are not neccessary
> > > > > here.
> > > > >
> > > > > Signed-off-by: Pavel Machek <pavel@xxxxxx>
> > > > >
> > > > > diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
> > >
> > > []
> > > > > struct bt_skb_cb {
> > > > > - __u8 pkt_type;
> > > > > - __u8 force_active;
> > > > > - __u16 expect;
> > > > > - __u8 incoming:1;
> > > > > + u8 pkt_type;
> > > > > + u8 force_active;
> > > > > + u16 expect;
> > > > > + u8 incoming:1;
> > > > > union {
> > > > > struct l2cap_ctrl l2cap;
> > > > > struct hci_ctrl hci;
> > >
> > >
> > > trivia:
> > >
> > > It's generally faster to use bool instead of u8 foo:1;
> >
> > Ok, but I'm not changing that in this patch.
> > (And actually, bool will take a lot more memory, right?)
>
> No worries, and bool is the same size as u8.

Exactly what I'm talking about :-). One byte vs. one bit, right?

Pavel

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