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From: Pranith Kumar <pranith@gatech.edu>
To: peterz@infradead.org, mingo@kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: regarding use of various cmpxchg* API
Date: Thu, 05 Jun 2014 18:44:37 -0400	[thread overview]
Message-ID: <5390F2D5.909@gatech.edu> (raw)

Hi Peter, Ingo,

I see that in the drivers there are the following types of cmpxchg API:

__cmpxchg64()
atomic_cmpxchg()
atomic64_cmpxchg()
cmpxchg()
atomic_long_cmpxchg()
cmpxchg_local()
local_cmpxchg()(in kernel/events/ring_buffer.c)
this_cpu_cmpxchg()

Since cmpxchg() internally handles the width, do you think it makes sense to replace the above uses of cmpxchg with the document API (cmpxchg, atomic_cmpxchg, cmpxchg_local)?

I am willing to do this and wanted to know if it something you think is worth pursuing.

Regards,
Pranith

             reply	other threads:[~2014-06-05 22:44 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-05 22:44 Pranith Kumar [this message]
2014-06-06  7:29 ` regarding use of various cmpxchg* API Peter Zijlstra
2014-06-06 14:17   ` Pranith Kumar
2014-06-06 14:30     ` Peter Zijlstra

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