Re: [RFC][PATCH] Make MAX_RT_PRIO and MAX_USER_RT_PRIO configurable

From: Ingo Molnar
Date: Wed Jul 27 2005 - 09:43:38 EST

* Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> On Wed, 2005-07-27 at 16:17 +0200, Ingo Molnar wrote:
> > i'd not do this patch, mainly because the '100 priority levels' thing is
> > pretty much an assumption in lots of userspace code.
> I must argue though, any user app that assumes 100 is the max prio is
> already broken. That's why there are system calls to get the actual
> range. Maybe it would be good to change the range to find the apps
> that break. And then fix them.

a fair number of apps assume that there's _at least_ 100 levels of
priorities. The moment you have a custom kernel that offers more than
100 priorities, there will be apps that assume that there are more than
100 priority levels, and will break if there are less.

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