linux-kernel - Re: [PATCH tip/core/rcu 1/4] rcu: rename "quiet" functions

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Message-ID: <20091202232056.GA5479@feather>
Date:	Wed, 2 Dec 2009 15:20:57 -0800
From:	Josh Triplett <josh@...htriplett.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com,
	dipankar@...ibm.com, akpm@...ux-foundation.org,
	mathieu.desnoyers@...ymtl.ca, dvhltc@...ibm.com, niv@...ibm.com,
	tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
	Valdis.Kletnieks@...edu, dhowells@...hat.com
Subject: Re: [PATCH tip/core/rcu 1/4] rcu: rename "quiet" functions

On Wed, Dec 02, 2009 at 12:10:13PM -0800, Paul E. McKenney wrote:
> The number of "quiet" functions has grown recently, and the names are
> no longer very descriptive.  The point of all of these functions is to
> do some portion of the task of reporting a quiescent state, so rename
> them accordingly:
> 
> o	cpu_quiet() becomes rcu_report_qs_rdp(), which reports a
> 	quiescent state to the per-CPU rcu_data structure.  If this
> 	turns out to be a new quiescent state for this grace period,
> 	then rcu_report_qs_rnp() will be invoked to propagate the
> 	quiescent state up the rcu_node hierarchy.
> 
> o	cpu_quiet_msk() becomes rcu_report_qs_rnp(), which reports
> 	a quiescent state for a given CPU (or possibly a set of CPUs)
> 	up the rcu_node hierarchy.
> 
> o	cpu_quiet_msk_finish() becomes rcu_report_qs_rsp(), which
> 	reports a full set of quiescent states to the global rcu_state
> 	structure.
> 
> o	task_quiet() becomes rcu_report_unblock_qs_rnp(), which reports
> 	a quiescent state due to a task exiting an RCU read-side critical
> 	section that had previously blocked in that same critical section.
> 	As indicated by the new name, this type of quiescent state is
> 	reported up the rcu_node hierarchy (using rcu_report_qs_rnp()
> 	to do so).
> 
> Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>

*Huge* improvement in terminology.

Acked-by: Josh Triplett <josh@...htriplett.org>
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