lkml.org 
[lkml]   [2007]   [Apr]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][PATCH -mm 2/3] freezer: Introduce freezer_flags
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/

\
 
 \ /
  Last update: 2007-04-23 05:21    [W:1.357 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site