linux-kernel - Re: [RFC PATCH 4/5] kmemtrace: SLUB hooks.

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Message-ID: <84144f020807110145g3467d77md54e3d734ecba2c6@mail.gmail.com>
Date:	Fri, 11 Jul 2008 11:45:59 +0300
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Eduard - Gabriel Munteanu" <eduard.munteanu@...ux360.ro>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	"Christoph Lameter" <cl@...ux-foundation.org>
Subject: Re: [RFC PATCH 4/5] kmemtrace: SLUB hooks.

Hi Eduard-Gabriel,

On Thu, Jul 10, 2008 at 9:06 PM, Eduard - Gabriel Munteanu
<eduard.munteanu@...ux360.ro> wrote:
> This adds hooks for the SLUB allocator, to allow tracing with kmemtrace.
>
> Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@...ux360.ro>

> @@ -205,7 +206,13 @@ void *__kmalloc(size_t size, gfp_t flags);
>
>  static __always_inline void *kmalloc_large(size_t size, gfp_t flags)
>  {
> -       return (void *)__get_free_pages(flags | __GFP_COMP, get_order(size));
> +       unsigned int order = get_order(size);
> +       void *ret = (void *) __get_free_pages(flags, order);
> +
> +       kmemtrace_mark_alloc(KMEMTRACE_KIND_KERNEL, _THIS_IP_, ret,
> +                            size, PAGE_SIZE << order, flags);

Oh, I missed this on the first review. Here we have, like in SLOB,
page allocator pass-through, so wouldn't KIND_PAGES be more
appropriate?
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