Messages in this thread | | | Date | Mon, 23 Apr 2007 08:48:04 +0530 | From | "Satyam Sharma" <> | Subject | Re: [RFC][PATCH -mm 2/3] freezer: Introduce freezer_flags |
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On 4/23/07, Paul Jackson <pj@sgi.com> wrote: > One more question - why would I want to do this?
Check out the FAQ in Documentation/power/swsusp.txt.
> Is this like something that would be useful on a laptop, to suspend > activity and reduce battery drain, while preserving the current state > of ones sessions and avoiding having to logout or shutdown?
Yes, the original purpose for the inclusion of the freezer code was to support suspend-resume (mainly for laptops, but suspend-resume could be useful in other circumstances too, see the FAQ).
> Is it useful for quietting a system down before doing hot plug or > unplug of key components, such as processors and memory?
Yes, the freezer is (proposed to be, at least) moving on from being merely a suspend-resume-only thing to other usage scenarios, such as kprobes and hotlpug. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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