From: Timur Tabi <timur@freescale.com>
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
Andi Kleen <andi@firstfloor.org>, Mel Gorman <mel@csn.ul.ie>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Nazarewicz <mina86@mina86.com>,
David Rientjes <rientjes@google.com>
Subject: Re: [PATCH 2/3] make new alloc_pages_exact()
Date: Wed, 27 Apr 2011 16:30:24 -0500 [thread overview]
Message-ID: <4DB88AF0.1050501@freescale.com> (raw)
In-Reply-To: <20110414200140.CDE09A20@kernel>
Dave Hansen wrote:
>
> What I really wanted in the end was a highmem-capable
> alloc_pages_exact(), so here it is. This function can be used to
> allocate unmapped (like highmem) non-power-of-two-sized areas of
> memory. This is in constast to get_free_pages_exact() which can only
> allocate from lowmem.
Is there an easy way to verify that alloc_pages_exact(5MB) really does allocate
only 5MB and not 8MB? Is there some kind of function that returns the amount of
unallocated memory, so I can do a diff?
--
Timur Tabi
Linux kernel developer at Freescale
WARNING: multiple messages have this Message-ID (diff)
From: Timur Tabi <timur@freescale.com>
To: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Andi Kleen <andi@firstfloor.org>, Mel Gorman <mel@csn.ul.ie>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Nazarewicz <mina86@mina86.com>,
David Rientjes <rientjes@google.com>
Subject: Re: [PATCH 2/3] make new alloc_pages_exact()
Date: Wed, 27 Apr 2011 16:30:24 -0500 [thread overview]
Message-ID: <4DB88AF0.1050501@freescale.com> (raw)
In-Reply-To: <20110414200140.CDE09A20@kernel>
Dave Hansen wrote:
>
> What I really wanted in the end was a highmem-capable
> alloc_pages_exact(), so here it is. This function can be used to
> allocate unmapped (like highmem) non-power-of-two-sized areas of
> memory. This is in constast to get_free_pages_exact() which can only
> allocate from lowmem.
Is there an easy way to verify that alloc_pages_exact(5MB) really does allocate
only 5MB and not 8MB? Is there some kind of function that returns the amount of
unallocated memory, so I can do a diff?
--
Timur Tabi
Linux kernel developer at Freescale
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next prev parent reply other threads:[~2011-04-27 21:30 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-14 20:01 [PATCH 1/3] rename alloc_pages_exact() Dave Hansen
2011-04-14 20:01 ` Dave Hansen
2011-04-14 20:01 ` [PATCH 2/3] make new alloc_pages_exact() Dave Hansen
2011-04-14 20:01 ` Dave Hansen
2011-04-14 21:55 ` David Rientjes
2011-04-14 21:55 ` David Rientjes
2011-04-27 21:30 ` Timur Tabi [this message]
2011-04-27 21:30 ` Timur Tabi
2011-04-27 21:37 ` Dave Hansen
2011-04-27 21:37 ` Dave Hansen
2011-04-27 21:42 ` Timur Tabi
2011-04-27 21:42 ` Timur Tabi
2011-04-28 16:02 ` Dave Hansen
2011-04-28 16:02 ` Dave Hansen
2011-04-14 20:01 ` [PATCH 3/3] reuse __free_pages_exact() in __alloc_pages_exact() Dave Hansen
2011-04-14 20:01 ` Dave Hansen
2011-04-14 22:00 ` David Rientjes
2011-04-14 22:00 ` David Rientjes
2011-04-14 22:07 ` Dave Hansen
2011-04-14 22:07 ` Dave Hansen
2011-04-14 22:09 ` David Rientjes
2011-04-14 22:09 ` David Rientjes
2011-04-29 14:17 ` [PATCH 1/3] rename alloc_pages_exact() Timur Tabi
2011-04-29 14:17 ` Timur Tabi
-- strict thread matches above, loose matches on Subject: below --
2011-04-11 22:03 Dave Hansen
2011-04-11 22:03 ` [PATCH 2/3] make new alloc_pages_exact() Dave Hansen
2011-04-11 22:03 ` Dave Hansen
2011-04-11 22:22 ` Andrew Morton
2011-04-11 22:22 ` Andrew Morton
2011-04-11 22:36 ` Dave Hansen
2011-04-11 22:36 ` Dave Hansen
2011-04-11 22:42 ` Timur Tabi
2011-04-11 22:42 ` Timur Tabi
2011-04-12 10:28 ` Michal Nazarewicz
2011-04-12 10:28 ` Michal Nazarewicz
2011-04-12 15:04 ` Dave Hansen
2011-04-12 15:04 ` Dave Hansen
2011-04-12 15:58 ` Michal Nazarewicz
2011-04-12 15:58 ` Michal Nazarewicz
2011-04-13 23:23 ` Dave Hansen
2011-04-13 23:23 ` Dave Hansen
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