Messages in this thread | | | Date | Mon, 7 Feb 2011 18:52:00 -0800 | From | Frank Rowand <> | Subject | Re: [PATCH] PM: Hide CONFIG_PM from users |
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On 02/07/11 04:22, Mark Brown wrote: > It is very rare to find a current system which is both sufficiently > resource constrained to want to compile out power management support > and sufficiently power insensitive to be able to tolerate doing so. > Since having the configuration option requires non-zero effort to > maintain, with ifdefery in most drivers, but it is used with vanishing > rarity it is simpler to just remove the option.
Proof by assertion that it is used with vanishing rarity.
> Begin doing so by hiding it from users - this should attract complaints > from any active users. The option is left disabled for the IA64 Ski > simulator which is a partial simulator for IA64 systems mostly missing > device support. This is a very limited use case which is unlikely to > ever want to enable most drivers.
That is not a good method of getting feedback from users.
1) It immediately removes the ability to have CONFIG_PM undefined, without first giving active users a chance to provide feedback.
2) The removal of that ability is not obvious ("make oldconfig" does not say anything about CONFIG_PM). It is easy to overlook a config change that happens silently.
3) The active users may not move to a newer version of the kernel that contains this change until after it has been decided that there are no users of the config option since no one complained in a timely manner.
Would it be appropriate to use Documentation/feature-removal-schedule.txt if this truly will be removed?
-Frank
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