swsusp: Documentation update

From: Pavel Machek
Date: Thu Sep 09 2004 - 08:51:57 EST


Hi!

This updates documentation in -mm: we no longer have mess in swsusp
:-). Please apply,
Pavel


--- clean-mm/Documentation/power/swsusp.txt 2004-08-24 09:01:50.000000000 +0200
+++ linux-mm/Documentation/power/swsusp.txt 2004-09-07 21:15:17.000000000 +0200
@@ -20,26 +20,6 @@
You need to append resume=/dev/your_swap_partition to kernel command
line. Then you suspend by echo 4 > /proc/acpi/sleep.

-Pavel's unreliable guide to swsusp mess
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-There are currently two versions of swap suspend in the kernel, the old
-"Pavel's" version in kernel/power/swsusp.c and the new "Patrick's"
-version in kernel/power/pmdisk.c. They provide the same functionality;
-the old version looks ugly but was tested, while the new version looks
-nicer but did not receive so much testing. echo 4 > /proc/acpi/sleep
-calls the old version, echo disk > /sys/power/state calls the new one.
-
-[In the future, when the new version is stable enough, two things can
-happen:
-
-* the new version is moved into swsusp.c, and swsusp is renamed to swap
- suspend (Pavel prefers this)
-
-* pmdisk is kept as is and swsusp.c is removed from the kernel]
-
-
-
Article about goals and implementation of Software Suspend for Linux
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Author: G?ábor Kuti
@@ -75,10 +55,6 @@
About the code

Things to implement
-- SMP support. I've done an SMP support but since I don't have access to a kind
- of this one I cannot test it. Please SMP people test it. .. Tested it,
- doesn't work. Had no time to figure out why. There is some mess with
- interrupts AFAIK..
- We should only make a copy of data related to kernel segment, since any
process data won't be changed.
- Should make more sanity checks. Or are these enough?
@@ -90,11 +66,6 @@
- We should not free pages at the beginning so aggressively, most of them
go there anyway..

-Drivers that need support
-- pc_keyb -- perhaps we can wait for vojtech's input patches
-- do IDE cdroms need some kind of support?
-- IDE CD-RW -- how to deal with that?
-
Sleep states summary (thanx, Ducrot)
====================================

@@ -109,7 +80,8 @@
echo 4b > /proc/acpi/sleep # for suspend to disk via s4bios


-FAQ:
+Frequently Asked Questions
+==========================

Q: well, suspending a server is IMHO a really stupid thing,
but... (Diego Zuccato):

--
When do you have heart between your knees?
-
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