linux-kernel - Re: [PATCH 8/10] mips: convert to generic helpers for IPI function calls

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Date:	Thu, 29 May 2008 15:20:54 +0100
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org,
	npiggin@...e.de, linux-arch@...r.kernel.org, jeremy@...p.org,
	mingo@...e.hu, paulmck@...ux.vnet.ibm.com
Subject: Re: [PATCH 8/10] mips: convert to generic helpers for IPI function
	calls

On Thu, May 29, 2008 at 10:58:22AM +0200, Jens Axboe wrote:

> This converts mips to use the new helpers for smp_call_function() and
> friends, and adds support for smp_call_function_single(). Not tested,
> but it compiles.
> 
> mips shares the same IPI for smp_call_function() and
> smp_call_function_single(), since not all hardware has enough available
> IPIs available to support seperate setups.

FYI, the comment isn't quite accurate.  The machanisms for IPIs on MIPS
are platform-specific.  The change which I recently objected to was
specific to a code model called VSMP.

  Raf
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