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Message-ID: <1475706531.1941.4.camel@perches.com>
Date: Wed, 05 Oct 2016 15:28:51 -0700
From: Joe Perches <joe@...ches.com>
To: Pavel Machek <pavel@....cz>
Cc: Marcel Holtmann <marcel@...tmann.org>,
"Gustavo F. Padovan" <gustavo@...ovan.org>,
Johan Hedberg <johan.hedberg@...il.com>,
"David S. Miller" <davem@...emloft.net>,
linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] bluetooth.h: __ variants of u8 and friends are not
neccessary inside kernel
On Thu, 2016-10-06 at 00:13 +0200, Pavel Machek wrote:
> 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:
[]
> > > > 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?
Memory isn't bit addressable.
So it's the same byte, it just doesn't use a read/modify/write
operation to update a value.
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