From: Steven Rostedt <rostedt@goodmis.org>
To: Alex Shi <alex.shi@linaro.org>
Cc: peterz@infradead.org, mingo@redhat.com, corbet@lwn.net,
linux-kernel@vger.kernel.org (open list:LOCKING PRIMITIVES),
linux-doc@vger.kernel.org (open list:DOCUMENTATION),
Sebastian Siewior <bigeasy@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 1/3] rtmutex: comments update
Date: Thu, 13 Apr 2017 12:00:46 -0400 [thread overview]
Message-ID: <20170413120046.11153c1e@gandalf.local.home> (raw)
In-Reply-To: <1492092174-31734-2-git-send-email-alex.shi@linaro.org>
On Thu, 13 Apr 2017 22:02:52 +0800
Alex Shi <alex.shi@linaro.org> wrote:
> The rt-mutex documents didn't gotten meaningful update from its first
> version. Even after owner's pending bit was removed in commit 8161239a8bcc
> ("rtmutex: Simplify PI algorithm and make highest prio task get lock")
> and priority list 'plist' changed to rbtree. So the documents are far
> late of real code.
BTW, there is still technically a "Pending Owner", it's just not called
that anymore. The pending owner happens to be the top_waiter of a lock
that has no owner and has been woken up to grab the lock. This change
simplified the code. The document should reflect this point.
-- Steve
next prev parent reply other threads:[~2017-04-13 16:00 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-13 14:02 [RFC PATCH 0/3] rtmutex comments update and trival fix Alex Shi
2017-04-13 14:02 ` [PATCH 1/3] rtmutex: comments update Alex Shi
2017-04-13 15:54 ` Steven Rostedt
2017-04-14 8:52 ` Alex Shi
2017-04-14 18:43 ` Steven Rostedt
2017-04-18 8:38 ` Alex Shi
2017-04-13 16:00 ` Steven Rostedt [this message]
2017-04-13 14:02 ` [PATCH 2/3] rtmutex: deboost priority conditionally when rt-mutex unlock Alex Shi
2017-04-13 14:23 ` Sebastian Siewior
2017-04-13 14:39 ` Peter Zijlstra
2017-04-13 16:09 ` Steven Rostedt
2017-04-13 16:21 ` Peter Zijlstra
2017-04-13 16:40 ` Steven Rostedt
2017-04-13 16:51 ` Peter Zijlstra
2017-04-13 14:02 ` [PATCH 3/3] rtmutex: remove unnecessary adjust prio Alex Shi
2017-04-13 16:15 ` Steven Rostedt
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