From: Oliver Neukum <oneukum@suse.com>
To: Guenter Roeck <linux@roeck-us.net>
Cc: Alexey Klimov <klimov.linux@gmail.com>,
yury.norov@gmail.com, wim@iguana.be,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
linux-watchdog@vger.kernel.org
Subject: Re: [PATCH v2] watchdog: add driver for StreamLabs USB watchdog device
Date: Tue, 19 Apr 2016 09:46:28 +0200 [thread overview]
Message-ID: <1461051988.15527.6.camel@suse.com> (raw)
In-Reply-To: <20160418163918.GE29343@roeck-us.net>
On Mon, 2016-04-18 at 09:39 -0700, Guenter Roeck wrote:
> > Possibly. We have never gone that route. The obvious problems is
> that
> > I am not sure our alignment is known before boot.
> >
> Seems scary. I always thought that the alignment associated with
> ____cacheline_aligned would be the maximum possible for a given
> build/architecture. If not, what is the value of having
> ____cacheline_aligned in the first place ?
I thought it was for performance to prevent cache bouncing.
I honestly don't know. You'd have to ask a specific question
on LKML.
Sorry
Oliver
next prev parent reply other threads:[~2016-04-19 7:49 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-18 2:53 [PATCH v2] watchdog: add driver for StreamLabs USB watchdog device Alexey Klimov
2016-04-18 8:32 ` Oliver Neukum
2016-04-18 13:57 ` Guenter Roeck
2016-04-18 14:08 ` Oliver Neukum
2016-04-18 16:39 ` Guenter Roeck
2016-04-19 7:46 ` Oliver Neukum [this message]
2016-04-18 17:01 ` Guenter Roeck
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