linux-kernel - Re: [PATCH RFC] sched: deferred set priority (dprio)

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Message-ID: <20140730130238.GE13965@amd.pavel.ucw.cz>
Date:	Wed, 30 Jul 2014 15:02:38 +0200
From:	Pavel Machek <pavel@....cz>
To:	Sergey Oboguev <oboguev.public@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC] sched: deferred set priority (dprio)

Hi!

> One of the intended purposes of this facility (but its not sole purpose) is to
> render a lightweight mechanism for priority protection of lock-holding critical
> sections that would be an adequate match for lightweight locking primitives
> such as futex, with both featuring a fast path completing within the
> userspace.

Do we get a manpage describing the interface...?

Would it make sense to make set_priority a "vsyscall" so it is fast
enough, and delayed_set_priority does not need to be exposed to
userspace?
									Pavel

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