linux-kernel - Re: [PATCH 02/15] tracing: Use NUMA allocation for per-cpu ring buffer pages

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Message-ID: <20110613100918.GB30962@elte.hu>
Date:	Mon, 13 Jun 2011 12:09:18 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Vaibhav Nagarnaik <vnagarnaik@...gle.com>,
	Ingo Molnar <mingo@...hat.com>,
	Michael Rubin <mrubin@...gle.com>,
	David Sharp <dhsharp@...gle.com>
Subject: Re: [PATCH 02/15] tracing: Use NUMA allocation for per-cpu ring
 buffer pages


* Steven Rostedt <rostedt@...dmis.org> wrote:

>  	for (i = 0; i < nr_pages; i++) {
> +		struct page *page;
>  		bpage = kzalloc_node(ALIGN(sizeof(*bpage), cache_line_size()),

missing separation between local variable definitions and the first C 
statement.

Same mistake repeats elsewhere in the patch as well.

> +			page = alloc_pages_node(cpu_to_node(cpu), GFP_KERNEL,
> +						0);

that linebreak is pointless.

> +		info->spare = ring_buffer_alloc_read_page(info->tr->buffer,
> +								info->cpu);

ditto.

Thanks,

	Ingo
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