linux-kernel - Re: [PATCH] use per cpu data for single cpu ipi calls

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Message-ID: <20090129111330.GB30738@elte.hu>
Date:	Thu, 29 Jan 2009 12:13:30 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-kernel@...r.kernel.org, rusty@...tcorp.com.au,
	npiggin@...e.de, torvalds@...ux-foundation.org, tglx@...utronix.de,
	arjan@...radead.org
Subject: Re: [PATCH] use per cpu data for single cpu ipi calls


* Peter Zijlstra <peterz@...radead.org> wrote:

> > Can generic_smp_call_function_single_interrupt() ever see 
> > CSD_FLAG_ALLOC set now?  If not, that kfree can go away.
> 
> Like said above, removing that kmalloc will hurt people.

the whole promise of generic-IPI seems to dwindle and we'll get back to 
roughly where we started out from.

	Ingo
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