linux-kernel - Re: [PATCH tip/core/rcu 01/14] rcu: Protect rcu_boost() lockless accesses with ACCESS

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Date:	Fri, 09 Jan 2015 16:27:01 -0800
From:	Davidlohr Bueso <dave@...olabs.net>
To:	Christian Borntraeger <borntraeger@...ibm.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, mingo@...nel.org,
	laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, tglx@...utronix.de, rostedt@...dmis.org,
	dhowells@...hat.com, edumazet@...gle.com, dvhart@...ux.intel.com,
	fweisbec@...il.com, oleg@...hat.com,
	Pranith Kumar <bobby.prani@...il.com>
Subject: Re: [PATCH tip/core/rcu 01/14] rcu: Protect rcu_boost() lockless
 accesses with ACCESS_ONCE()

On Fri, 2015-01-09 at 22:58 +0100, Christian Borntraeger wrote:
> When we talk about changing the parameters it might make sense to also think about some comments from George Spelvin and consider a rename to WRITE_ONCE or STORE_ONCE (READ_ONCE --> LOAD_ONCE). Unfortunately there doesnt seem to be a variant that is fool proof (in the sense of Rustys guideline that a good interface cannot be used wrong). So any proposal in that regard would be very welcome.

I think any of those two names are a lot better than what we have now.
I'm a bit inclined towards LOAD/STORE though. That, and reordering the
arguments for stores would make it pretty fool proof imo.

Thanks,
Davidlohr

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