From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Pavel Machek <pavel@suse.cz>
Cc: Linux-pm mailing list <linux-pm@lists.osdl.org>,
Nigel Cunningham <ncunningham@linuxmail.org>
Subject: Re: swsusp3: system suspend/resume from userspace
Date: Wed, 21 Sep 2005 20:32:30 +1000 [thread overview]
Message-ID: <1127298751.4386.114.camel@gaston> (raw)
In-Reply-To: <20050921101811.GC25297@atrey.karlin.mff.cuni.cz>
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> I still do my "userspace freezing", except that it does not freeze the
> process doing that. (Thats no change from previous design,
> BTW). System snapshot works single CPU and with interrupts disabled;
> so it indeed should be atomic. That should mean there are no
> interesting races, as long as userspace app is not doing anything
> stupid.
Which include things like taking page faults etc... are you mlock'ing it
all ? I really don't see the point though. It's not like we actually
need a 3rd version of swsusp, and there are plenty of other more
important things to work on !
> Userland application is currently simple port of kernel swsusp.c into
> userspace, so it should not do anything stupid...
>
> Pavel
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next prev parent reply other threads:[~2005-09-21 10:32 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-01 18:49 swsusp3: system suspend/resume from userspace Brown, Len
2005-09-01 20:17 ` Pavel Machek
2005-09-01 21:13 ` Nigel Cunningham
2005-09-20 23:41 ` Benjamin Herrenschmidt
2005-09-21 10:18 ` Pavel Machek
2005-09-21 10:32 ` Benjamin Herrenschmidt [this message]
2005-09-21 12:45 ` Pavel Machek
2005-09-21 12:53 ` Greg KH
-- strict thread matches above, loose matches on Subject: below --
2005-09-01 11:05 Pavel Machek
2005-09-01 11:55 ` Nigel Cunningham
2005-09-01 15:11 ` Pavel Machek
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