linux-kernel - Re: [PATCH 2/3] generic-ipi: remove kmalloc()

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Message-Id: <200902181601.06738.rusty@rustcorp.com.au>
Date:	Wed, 18 Feb 2009 16:01:06 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>,
	Jens Axboe <jens.axboe@...cle.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Oleg Nesterov <oleg@...hat.com>
Subject: Re: [PATCH 2/3] generic-ipi: remove kmalloc()

On Wednesday 18 February 2009 08:29:06 Peter Zijlstra wrote:
> Remove the use of kmalloc() from the smp_call_function_*() calls.

This patch is actually quite nice.  Not sure it's correct, but it's neat :)

One minor quibble:

> +			data = &per_cpu(csd_data, me);

"data = &__get_cpu_var(csd_data);" is slightly preferred.  A few less cycles.

Thanks,
Rusty.
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