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From: Misbah khan <misbah_khan@engineer.com>
To: linuxppc-embedded@ozlabs.org
Subject: Re: how to allocate 9MB of memory in kernel ?
Date: Thu, 17 Jul 2008 01:19:13 -0700 (PDT)	[thread overview]
Message-ID: <18503765.post@talk.nabble.com> (raw)
In-Reply-To: <200807170956.52101.arnd@arndb.de>


vmalloc can only allocate 128k i guess where in i need 9MB allocated when
driver is inserted and would be released only when its removed. mapping to
user space is not a concern 

--- Misbah <><


Arnd Bergmann wrote:
> 
> On Thursday 17 July 2008, Misbah khan wrote:
>> I need to allocate 9 MB of memory in to the kernel space which i need to
>> mmap for the application to access.
>> 
>> I need to know what could be the best possible way of doing the same.
>> 
> 
> If you don't need the memory to be physically contiguous, you can use
> vmalloc to get the memory, but then you need to use remap_vmalloc_range
> for mapping the memory into a user address space.
> 
> 	Arnd <><
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> 
> 

-- 
View this message in context: http://www.nabble.com/how-to-allocate-9MB-of-memory-in-kernel---tp18503022p18503765.html
Sent from the linuxppc-embedded mailing list archive at Nabble.com.

  reply	other threads:[~2008-07-17  8:19 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-17  7:26 how to allocate 9MB of memory in kernel ? Misbah khan
2008-07-17  7:51 ` Marco Stornelli
2008-07-17  8:34   ` Misbah khan
2008-07-17  9:04     ` Marco Stornelli
2008-07-17  7:56 ` Arnd Bergmann
2008-07-17  8:19   ` Misbah khan [this message]
2008-07-17  8:24     ` Arnd Bergmann
2008-07-18  4:44   ` Misbah khan
2008-07-18  6:50     ` Marco Stornelli
2008-07-18  8:48       ` Misbah khan
2008-07-18 14:57         ` Timur Tabi
2008-07-18 15:39         ` Arnd Bergmann
2008-07-22  5:23           ` Misbah khan
2008-07-22  6:43             ` Marco Stornelli
2008-07-22  9:31             ` Arnd Bergmann
2008-07-22  9:47               ` Marco Stornelli
2008-07-22 13:22                 ` Misbah khan
2008-07-22 15:12                   ` Arnd Bergmann
2008-07-23  7:30                     ` Misbah khan
2008-07-23 12:47                       ` Alessandro Rubini
2008-07-24  8:33                       ` Misbah khan
2008-07-24  9:31                         ` Arnd Bergmann
2008-07-25  8:43                           ` Misbah khan
2008-07-25  8:50                             ` Arnd Bergmann
2008-08-02 19:13                             ` harihanv
2008-07-17  8:02 ` Sylvain Joyeau
2008-07-17  8:41   ` Misbah khan
     [not found] <mailman.2280.1216290829.2883.linuxppc-embedded@ozlabs.org>
2008-07-17 20:15 ` Siva Prasad

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