linux-kernel - Re: [PATCH tip/core/rcu 31/55] rcu: Make rcu_implicit_dynticks

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Message-ID: <20111017014350.GD19421@leaf>
Date:	Sun, 16 Oct 2011 18:43:50 -0700
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, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu,
	dhowells@...hat.com, eric.dumazet@...il.com, darren@...art.com,
	patches@...aro.org
Subject: Re: [PATCH tip/core/rcu 31/55] rcu: Make rcu_implicit_dynticks_qs()
 locals be correct size

On Tue, Sep 06, 2011 at 11:00:25AM -0700, Paul E. McKenney wrote:
> When the ->dynticks field in the rcu_dynticks structure changed to an
> atomic_t, its size on 64-bit systems changed from 64 bits to 32 bits.
> The local variables in rcu_implicit_dynticks_qs() need to change as
> well, hence this commit.

If an atomic_t always holds 32-bits, which it appears to, then shouldn't
this use u32 rather than unsigned int?

- Josh Triplett
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