Re: [PATCH v4 1/1] Documentation: real-time: Add kernel configuration guide

Steven Rostedt <[email protected]>
Newsgroups dev.linux.lists.linux-rt-devel,org.kernel.vger.linux-doc,org.kernel.vger.linux-kernel
Message-ID <[email protected]>
On Tue, 21 Jul 2026 16:36:06 +0200
Sebastian Andrzej Siewior <[email protected]> wrote:

> > Unfortunately, debugfs is needed to configure the fair deadline server:
> > 
> >     /sys/kernel/debug/sched/fair_server/cpu*/runtime  
> 
> So drop the reference to it. It is not "bad" to have it enabled. It is

I believe that some distros feel that it is bad to enable because there's
no real auditing of its interface. Although, it is now only accessible by
root.

> just an interface to other things. Same as sysfs except that debugfs has
> no stable ABI unlike sysfs.

I found out the hard way that it can most definitely be a stable ABI :-p

-- Steve
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