From: Jiri Slaby <jirislaby@gmail.com>
To: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>,
LKML <linux-kernel@vger.kernel.org>, Andi Kleen <ak@suse.de>,
Alexey Dobriyan <adobriyan@gmail.com>
Subject: Re: [PATCH] driver: ip27-rtc - convert ioctl to unlocked_ioctl
Date: Mon, 14 Jan 2008 17:27:00 +0100 [thread overview]
Message-ID: <478B8D54.7010400@gmail.com> (raw)
In-Reply-To: <20080114160745.GB6639@cvg>
On 01/14/2008 05:07 PM, Cyrill Gorcunov wrote:
> Yes, process would be stopped, and not *just* stopped but could spend
> all his cpu time-slice in attempt to get spinlock (espec if set time is
> much longer than read), but if we use mutex here the process could just
> sleep instead of trying to get spinlock granted. Am I wrong? Or this is
> not worth to do it?
I would say no. It'll spin only for nanoseconds there.
next prev parent reply other threads:[~2008-01-14 16:27 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-13 20:32 [PATCH] driver: ip27-rtc - convert ioctl to unlocked_ioctl Cyrill Gorcunov
2008-01-13 21:07 ` Alexey Dobriyan
2008-01-13 21:25 ` Cyrill Gorcunov
2008-01-13 21:22 ` Jiri Slaby
2008-01-13 21:29 ` Jiri Slaby
2008-01-13 21:32 ` Cyrill Gorcunov
2008-01-14 6:38 ` Cyrill Gorcunov
2008-01-14 15:14 ` Jiri Slaby
2008-01-14 15:38 ` Cyrill Gorcunov
2008-01-14 15:59 ` Jiri Slaby
2008-01-14 16:07 ` Cyrill Gorcunov
2008-01-14 16:27 ` Jiri Slaby [this message]
2008-01-14 16:28 ` Cyrill Gorcunov
2008-01-13 23:08 ` Andi Kleen
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