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Message-ID: <1401753224.3645.190.camel@edumazet-glaptop2.roam.corp.google.com>
Subject: Re: [PATCH v2] introduce atomic_pointer to fix a race condition in
 cancelable mcs spinlocks
From: Eric Dumazet <eric.dumazet@gmail.com>
To: paulmck@linux.vnet.ibm.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Peter Zijlstra <peterz@infradead.org>,
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Date: Mon, 02 Jun 2014 16:53:44 -0700
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On Mon, 2014-06-02 at 16:17 -0700, Paul E. McKenney wrote:

> But given that I already have preemption disabled and given that
> __srcu_read_lock() is not to be used by irq handlers, I should be able to
> use __this_cpu_inc(), correct?  Just to avoid unnecessary irq disabling
> on non-x86 platforms...

Absolutely, __this_cpu_inc() is OK here.


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