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APM: delete APM in Linux-2.6.40

Message ID alpine.LFD.2.02.1103240336590.4529@x980 (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Len Brown March 24, 2011, 7:39 a.m. UTC
None

Comments

Yuhong Bao April 2, 2011, 9:40 p.m. UTC | #1
> +Why: Microsoft deleted APM from Windows as of Vista in in 2006.

To be more precise, support for all hardware that do not support ACPI.
Also required for Vista and later is a 586 processor with TSC, such as Intel Pentium or later
 
Yuhong Bao
Len Brown April 4, 2011, 8:18 p.m. UTC | #2
> I still have working thinkpad 560X, my brother occassionaly uses it...

There is no doubt that there are still people running Linux
on old APM laptops.

The question, however, is if they're running (or will run)
the latest upstream kernel.  Further, are they available
to test APM patches to the latest upstream kernel.

> I do not think we should remove APM support like this. It does not
> seem to be huge maintainance burden...

Last week we decided not to delete APM yet.
The jury is still out on APM's idle hooks.

cheers,
Len Brown, Intel Open Source Technology Center
diff mbox

Patch

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index b3f35e5..2a03c46 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -619,3 +619,11 @@  Why:	The original implementation of memsw feature enabled by
 Who:	Michal Hocko <mhocko@suse.cz>
 
 ----------------------------
+
+What:	CONFIG_APM
+When:	2.6.40
+Why:	Microsoft deleted APM from Windows as of Vista in in 2006.
+	It now seems more than safe that the latest Linux Kernel be APM-free.
+	The vintage laptops supporting APM are now difficult to find,
+	making it problatic to maintain this code.
+Who:	Len Brown <len.brown@intel.com>